Dr. Jeff Masters' WunderBlog

Historic 2012 U.S. drought: 6th greatest on record
Posted by: Dr. Jeff Masters, 22:59 GMT le 16 juillet 2012 +39
The great drought of 2012 is upon us. The percentage area of the contiguous U.S. covered by moderate or greater drought increased to 56% by the end of June, and ranked as the sixth largest drought since U.S. weather records began in 1895, said NOAA's National Climatic Data Center in their monthly State of the Climate drought report on Monday. The last time more of the U.S. was in drought occurred in December 1956, with 58%. June 2012 ranked as the 10th greatest U.S. drought on record, when considering the percentage area of the U.S. in severe or greater drought (33%.)


Figure 1. June 2012 ranked in sixth place for the greatest percent area of the contiguous U.S. covered by moderate or greater drought, since record keeping began in 1895. Graphic created from data from NOAA's National Climatic Data Center.

The forecast: hot and dry with increasing drought
The great drought of 2012 is going to steadily worsen during the remainder of July. Recent runs of the global computer forecast models predict a continuation through the end of July of the large-scale jet stream patterns that have brought the U.S. its hot, dry summer weather. The most extreme heat will tend to be focused over the center portion of the county. That was certainly the case Monday, with temperatures near or in excess of 100° observed from South Dakota to Michigan. High temperatures near 100°F are expected in Chicago and Detroit on Tuesday, and over much of the Midwest.


Figure 2. Comparison of drought between June 2012 (top) and June 1988 (bottom) shows that drought conditions covered a similar proportion of the contiguous U.S., but the spatial patterns were different. The 2012 drought is especially intense over the Southwest U.S., but in 1988, this region experienced a very active summer monsoon season that kept the region moist. However, in 1988, the Northern Plains were much drier than in 2012. Image credit: NOAA Earth System Research Laboratory.

A multi-billion dollar drought disaster underway
Agronomists and drought experts are comparing the scale and intensity of the 2012 drought to the 1988 drought. With the forecast offering little optimism, the costs of the 2012 drought are certain to be many billions of dollars, and the disaster could be one of the top ten most expensive weather-related disasters in U.S. history. Droughts historically have been some of the costliest U.S. weather disasters. A four-year drought and locust plague from 1874 - 1877 cost $169 billion (2012 dollars), and was arguably the most expensive weather related disaster in U.S. history (see Jeffrey Lockwood's 2004 book, Locust.) The costs of the great Dust Bowl drought of the 1930s, which displaced 2.5 million people, are incalculable. The costs of government financial assistance alone were $13 billion in 2012 dollars (Warrick, 1980.) The 1988 drought cost $78 billion (2012 dollars), the second most expensive weather disaster since 1980, behind Hurricane Katrina.

The associated heat wave of the great drought of 2012 is also a major concern. The heat waves associated with the great droughts of 1980 and 1988 killed between 7,500 - 10,000 people, according to NOAA's National Climatic Data Center. The heat waves of the 1930s are blamed for 5,000 deaths. The death toll from the 2012 heat wave is approaching 100, including 23 in Chicago, up to 19 in Wisconsin, 18 in Maryland, 17 in St. Louis, and 9 in Philadelphia. The toll will undoubtedly grow as more heat-related deaths are discovered, and as the heat continues.


Figure 3. The U.S. has seen twelve weather-related disasters costing at least $15 billion since 1980, according to NOAA's National Climatic Data Center. Two of the top three most expensive disasters have been droughts.

Tornadoes kill one, injure ten in Poland
A series of rare tornadoes hit northern and western Poland over the weekend, killing one and injuring ten. At least 100 homes were destroyed, and one of the twisters measured 1 km (0.6 miles) in diameter. Tornadoes are quite rare in Poland. According to the publication, An updated estimate of tornado occurrence in Europe by Nikolai Dotzek (2003), Poland reports about two tornadoes per year, and probably has two more per year that are unreported. Thanks go to wunderground member beell for posting this link.


Video 1. Raw footage of the weekend tornadoes that hit Poland.

Jeff Masters
Categories: Drought Heat
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951. Jedkins01 00:25 GMT le 18 juillet 2012    
Based on the looks of it, we will probably get another round of soakers on the west coast of Florida tonight. Thunderstorms are already rapidly redeveloping, it looking out over the gulf just 20 minutes ago there was just lots of low level shallow cumulus, now it looks like little nukes going off in the gulf.
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952. bappit 00:26 GMT le 18 juillet 2012    
Quoting Articuno:

I like popeyes chicken better then KFC's IDK why

I prefer popeye's. I do like KFC roasted chicken but it is too expensive. I've stayed with my own chicken vindaloo lately.
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953. washingtonian115 00:27 GMT le 18 juillet 2012    
KFC puts onion powder in their to..
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954. MAweatherboy1 00:28 GMT le 18 juillet 2012    
I don't know why... maybe it's the KFC vs. Popeye debate... but I feel like we need a storm to track.
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955. Grothar 00:32 GMT le 18 juillet 2012    
Quoting bappit:
890. "Answer: Ocean Temperatures in the 1930's Were Unstable" What does that mean? I'm not sure how temperatures could be unstable. I read the article referenced by the about.com summary and saw nothing about unstable. Just mentioned warmer tropical Atlantic and cooler tropical Pacific.


Perhaps this could explain it for you. I believe they were referring to baroclinic instability in the ocean may be caused by sea surface termperature and wind stress.


Link
Member Since: 17 juillet 2009 Posts: 56 Comments: 19507
956. Tropicsweatherpr 00:32 GMT le 18 juillet 2012    
Fabio downgraded to TD.

EP, 06, 2012071800, , BEST, 0, 235N, 1205W, 30, 1006, TD

Link
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957. washingtonian115 00:33 GMT le 18 juillet 2012    
Quoting MAweatherboy1:
I don't know why... maybe it's the KFC vs. Popeye debate... but I feel like we need a storm to track.
In about a month at this time we'll probably be talking about a storm.
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958. ncstorm 00:37 GMT le 18 juillet 2012    
Quoting washingtonian115:
KFC puts onion powder in their to..


Wash..you know the secret recipe?..do tell!
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959. washingtonian115 00:39 GMT le 18 juillet 2012    
Quoting ncstorm:


Wash..you know the secret recipe?..do tell!
I know some spices that goes into both chicken recipes but not all.
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960. bappit 00:40 GMT le 18 juillet 2012    
Quoting Grothar:


Perhaps this could explain it for you. I believe they were referring to baroclinic instability in the ocean may be caused by sea surface termperature and wind stress.


Link

Yeah. Uh huh. I prefer irregular German verbs to this.
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961. ncstorm 00:42 GMT le 18 juillet 2012    
Quoting washingtonian115:
I know some spices that goes into both chicken recipes but not all.


send them to me in WU mail..I wanna take a crack at it..
Member Since: 19 août 2006 Posts: 7 Comments: 8369
962. Grothar 00:46 GMT le 18 juillet 2012    
Quoting bappit:

Yeah. Uh huh. I prefer irregular German verbs to this.


LOL. sein bin-bist-ist-seid-sein
war-warst-war waren-wart
bin gewesen-bist gewesen-ist gewesen
sind gewesen-waren gewesen...etc. etc.



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963. PlazaRed 00:46 GMT le 18 juillet 2012    
WE got a blog about extreme temps and now we got a blog about hot, spicy food.
Whatever next.
Hot Fashion?
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964. txjac 00:47 GMT le 18 juillet 2012    
I prefer the KFC ...however hadnt had any in years ...
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965. wxchaser97 00:47 GMT le 18 juillet 2012    
Drought and Fire Danger Information
Widespread Drought Continues to Intensify Across Southwest Lower Michigan

Synopsis
Ongoing persistent dryness along with well above normal temperatures has led to steadily worsening drought conditions across the region. The outlook for the remainder of July indicates continued below normal rainfall and above normal temperatures. A continued warmer and drier than normal scenario will undoubtedly support a detrimental increase in regional drought severity. Extended drought conditions will lead to further water supply issues, such as record low streamflows and heavier strains on aquifers. Agricultural loss estimates will continue to mount. Crop yield estimates will likely diminish and livestock stress and losses will increase.


The drought intensity across the region varies, as defined by The United States Drought Monitor Index:

Across Southwest Lower Michigan, D0 to D1 or Abnormally Dry to Moderate drought conditions exist.


Summary of impacts
-Reports of large and rapidly spreading grass and field fires have already been reported. This trend will be expected to worsen as live fuel moisture content continues to decrease.
-Many creeks and streams are running at or near record low flow. Large stem river flows are in the single percentile of normal flow, with some at all-time record low flow.
-The shallow water levels have led to warmer than normal streamwater temperatures, and this is causing increased concern for unfavorable aquatic habitat for mussels and other macro invertebrates.
-Agricultural impacts are continually being assessed, however economic losses are already being reported for this growing season.

Climate summary
Rainfall over the region has been significantly below normal for the past month and below normal since June. This lack of rain has led to some of the driest conditions on record.

Precipitation/temperature outlook
With the exception of a few fast moving weather systems, high pressure will continue to dominate the weather over the region through the end of July. Continued dry weather and warming daytime temperatures will steadily worsen the drought conditions in Southwest Lower Michigan, while the latest 6 to 10 day outlook from the Climate Prediction Center indicates the chance for above normal precipitation, conditions do not look favorable for widespread heavy rainfall from July 17th through July 21st. While temperatures will be near normal this weekend, climatological trends and long range forecasts indicate hot temperatures will return by the start of next week and continue.

Hydrologic summary and outlook
All rivers across Southwest Lower Michigan are experiencing flows that are at or near record low values. There has been a gradual but steady fall in river and stream levels over the past several months and this trend is expected to continue through September when average flow minimums occur. With the lack of significant rainfall expected, rivers and streams are expected to continue their slow fall through July. Lake levels across the region are expected to continue to fall as well. This may create problems for boaters and swimmers. Caution should be exercised as more hazardous objects that had been covered by water may now be exposed or nearly exposed.

Member Since: 16 Mars 2012 Posts: 87 Comments: 6776
966. StormGoddess 00:50 GMT le 18 juillet 2012    
Quoting Tribucanes:
Daniel the prophet told of a "world-wide web" that would come before the end. Not trying to push religion, just saying this was a pretty good call on his part. Computers make us far less intellectual and far more selfish and less able to communicate. Too bad the universal message is, computers make us more important and smarter. US test scores tells us which one is accurate. Fifty years ago we still had families in America too, that didn't hurt any.


The Hopi tribe says that when there is an invisible web in the sky, the end is near. Now one has appeared, linking up all of the cell phones, etc....
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967. Articuno 00:53 GMT le 18 juillet 2012    

Not much going on wave wise
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968. Tropicsweatherpr 00:56 GMT le 18 juillet 2012    
Quoting Articuno:

Not much going on wave wise


Yeah,only a couple of weak waves right now. I think July will go without any development. IMO,Ernesto will form by the second week of August.
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969. GeorgiaStormz 00:57 GMT le 18 juillet 2012    
KFC is the best. Their chicken is WUNDERBAR!!
Anyone ever been to the Big Chicken:



The eyes move in a circle and the beak opens and closes
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970. Grothar 00:57 GMT le 18 juillet 2012    
From the USGS:

The world's great deserts were formed by natural processes interacting over long intervals of time. During most of these times, deserts have grown and shrunk independent of human activities. Paleodeserts, large sand seas now inactive because they are stabilized by vegetation, extend well beyond the present margins of core deserts, such as the Sahara. In some regions, deserts are separated sharply from surrounding, less arid areas by mountains and other contrasting landforms that reflect basic structural differences in the regional geology. In other areas, desert fringes form a gradual transition from a dry to a more humid environment, making it more difficult to define the desert border.
These transition zones have very fragile, delicately balanced ecosystems. Desert fringes often are a mosaic of microclimates. Small hollows support vegetation that picks up heat from the hot winds and protects the land from the prevailing winds. After rainfall the vegetated areas are distinctly cooler than the surroundings. In these marginal areas, human activity may stress the ecosystem beyond its tolerance limit, resulting in degradation of the land. By pounding the soil with their hooves, livestock compact the substrate, increase the proportion of fine material, and reduce the percolation rate of the soil, thus encouraging erosion by wind and water. Grazing and the collection of firewood reduces or eliminates plants that help to bind the soil.

Below is the encroachment of the Sahara in Mauritania.

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971. GeorgiaStormz 00:58 GMT le 18 juillet 2012    
Good night everyone, have a safe evening
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972. KEEPEROFTHEGATE (Mod) 01:11 GMT le 18 juillet 2012    
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973. WxGeekVA 01:15 GMT le 18 juillet 2012    
Quoting KEEPEROFTHEGATE:


I'll see your chill music and raise you this:

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974. KEEPEROFTHEGATE (Mod) 01:23 GMT le 18 juillet 2012    
Member Since: 15 juillet 2006 Posts: 143 Comments: 40424
975. MAweatherboy1 01:26 GMT le 18 juillet 2012    
I just finished up a new blog... It has a quick summary of the tropics and then I go into some detail on what I'm doing at the Blue Hill Meteorological Observatory this summer... It's pretty interesting I think... You should check it out :)

Link
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976. MAweatherboy1 01:28 GMT le 18 juillet 2012    
"91L" did not get a 0z update so I think it's safe to assume it was a mistake.
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977. ncstorm 01:30 GMT le 18 juillet 2012    
Good nite folks..vorticity is increasing on the east and west coast of florida

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978. hydrus 01:44 GMT le 18 juillet 2012    
Quoting KEEPEROFTHEGATE:
RE # 972....All In can say is that was awesome. Thank you for sharing Keep..
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979. hydrus 01:49 GMT le 18 juillet 2012    
Another " Time " its definitely worth a listen If you have not heard it...img src="">
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980. txjac 01:49 GMT le 18 juillet 2012    
Hey Bohonk ..was up your way yesterday ... on my way to San Angelo for work ...just wanted to say hi if you are on line
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981. Articuno 01:54 GMT le 18 juillet 2012    
Quoting WxGeekVA:


I'll see your chill music and raise you this:



wtf

this is how you roll
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982. TropicalAnalystwx13 01:56 GMT le 18 juillet 2012    
Quoting Articuno:


wtf

this is how you roll

Local on the 8s music ^

This beats all.

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983. Articuno 01:58 GMT le 18 juillet 2012    
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984. Skyepony (Mod) 02:01 GMT le 18 juillet 2012    
Navy seems to be following 91L. Just updated GOES 0145Z.
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985. WunderAlertBot (Admin) 02:01 GMT le 18 juillet 2012    
JeffMasters has created a new entry.
986. redwagon 02:02 GMT le 18 juillet 2012    
Quoting bohonkweatherman:
I would love for a tropical depression or storm come thru southern Texas and go west but those chances are slim.

We got lucky with Hermine Sept 10... If she hadn't come through AND last year happened like it did.... we would have no Highland Lakes at all.

With no persistent high pressure dome this year, we have a good a chance as anybody else of a drenching TS.
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987. KEEPEROFTHEGATE (Mod) 03:04 GMT le 18 juillet 2012    
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988. KEEPEROFTHEGATE (Mod) 03:05 GMT le 18 juillet 2012    
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989. HurricaneHunterJoe 03:08 GMT le 18 juillet 2012    
Quoting washingtonian115:
Since their is nothing to talk about anyone want to talk about food?.



im munching on some seedless grapes.......ummmmmmm
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990. sunlinepr 03:14 GMT le 18 juillet 2012    

O'ahu's south shores invaded by mysterious creature
Reported by: Brianne Randle


The south shore of O'ahu is being invaded by something strange from sea, that even has sand crabs running for cover.

"It's the first time I've seen this, I've never seen it before," says beach goer Bruce Kuwana.

"It's really weird, it looks like you want to eat it like a little berry," says beach goer Sonya Lake.

"There are probably millions I'd say," says beach goer Scott Paddock.

If you look closely the entire shoreline is dotted with tiny, purple creatures all curled up.

"Looks like it has about it 6 legs on each side," says Lake. "Yeah it's like an avatar crab."

"When something washes up like this you don't know what to expect, maybe Tsunami stuff," says Kuwana.

It's something many have never seen before. And no one we found knew what they were.

"I definitely want to know where they came from and what they are all about," says Paddock.

Even the biologists at the Waikiki Aquarium are scratching their heads. They've been getting reports of the pea-sized crabs from Kahala to Ala Moana, all this week.

"The lifeguard called and asked what these things were because she had reports of surfers were actually have these things crawl up on their boards and onto them," says Norton Chan, Waikiki Aquarium Biologist.

He can't find a specific name for the animal - all he knows is they are some type of crab still in the larvae stage.

"What you are seeing is a swimming stage probably a few more molts before they settle into their actual crab stage itself," says Chan.

Likely the ones we spotted on the sand were dead or will be soon. He estimates there could have been millions that came up onto our beaches in the past few days.

"I don't think it's that common but ever so often when conditions are right these animals really start coming in," says Chan.

Waikiki Aquarium officials are saving some, hoping to keep them alive long enough to see how they grow.

"There's a lot of things we don't know about the ocean so any opportunity like this is a great learning experience," says Chan.

At this point it's still unknown where these crabs came from, how big they'll get and what they eat.
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991. sunlinepr 03:15 GMT le 18 juillet 2012    
Confused climate: Anchorage Alaska experiences coldest first-half of July on record
Posted on July 17, 2012

July 17, 2012 – ALASKA – Looking for relief from the heat over much of the Lower 48 states? Head to coastal Alaska where they are experiencing the coldest first half of July on record! Through the first 14 days of July, the average temperature in Anchorage was 53.1 degrees factoring in daily highs and lows, which makes it the coldest first half of the month on record according to the National Weather Service in Anchorage. Should this temperature trend continue, it could threaten the record for the coldest July ever, which occurred in 1920 and had an average temperature of 54.4 degrees. Typically this stretch of time is the warmest of the year. Instead, temperatures in the city of Anchorage are running 5.3 degrees below average. Some days have even turned out colder than cities on the Arctic Coast such as Barrow. On July 12th, the high temperature topped out at 54 degrees in Anchorage, while temperatures soared to 62 in Barrow (a whooping 15 degrees above average.) Not only has it been cool, but residents of the Alaska city haven’t seen much sunlight due to overcast skies and a persistent flow off the ocean. Rainfall through the first 14 days is running slightly above normal at 120 percent. But the clouds and cool temperatures have been the bigger story. –Accuweather


Ice break: A massive iceberg larger than Manhattan has broken away from the floating end of a Greenland glacier this week, an event scientists predicted last autumn. The giant ice island is 46 square miles, and separated from the terminus of the Petermann Glacier, one of Greenland’s largest. The Petermann Glacier last birthed — or “calved” — a massive iceberg two years ago, in August 2010. The iceberg that broke off and floated away was nearly four times the size of Manhattan, and one of the largest ever recorded in Greenland. Although the new iceberg isn’t as colossal as its 2010 predecessor, its birth has moved the front end of the massive glacier farther inland than it has been in 150 years, Andreas Muenchow, an associate professor of physical ocean science and engineering at the University of Delaware, said in a statement. Jason Box, a scientist with Ohio State University’s Byrd Polar Research Center, has also been monitoring the Petermann Glacier and in September 2011 he told OurAmazingPlanet that a growing crack likely would sever the glacier once warmer weather took hold during the summer months. “We can see the crack widening in the past year through satellite pictures, so it seems imminent,” Box said at the time. Muenchow said that the newest ice island broke away on Monday morning (July 16). Although iceberg birth is a natural, cyclical process, when the process speeds up, there are consequences. The floating ends of glaciers, known as ice shelves, act as doorstops. When these ice shelves suddenly splinter and weaken or even collapse entirely, as has been observed in Antarctica, the glaciers that feed them speed up, dumping more ice into the ocean and raising global sea levels. “The Greenland ice sheet as a whole is shrinking, melting and reducing in size as the result of globally changing air and ocean temperatures and associated changes in circulation patterns in both the ocean and atmosphere,” Muenchow said. -MSNBC
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992. sunlinepr 03:16 GMT le 18 juillet 2012    
WV burst....

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993. sunlinepr 03:25 GMT le 18 juillet 2012    
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994. GeorgiaStormz 13:25 GMT le 18 juillet 2012    
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About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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