July 2011: Most extreme July on record for the U.S.
According to the National Climatic Data Center's Climate Extremes Index, July 2011 was the most extreme July on record (since 1910) with a value of 37%. The Climate Extremes Index is created by merging the various climate indicators (drought, flood, extreme heat, extreme cold, etc.) into an index that can be tracked over time. This month's record CEI was due to extreme warm minimum temperatures across the country, wet northern Plains and Great Lakes, extreme warm maximum temperatures, and the severe drought across the South and Gulf Coast.
It was the fourth warmest July on record for the nation, and the fourth warmest month overall with an average temperature of 77°F. Extreme heat continued to bake the South, and Oklahoma and Texas both had their warmest months on record. Oklahoma's statewide average temperature was a remarkable 88.9°F in July, which is the warmest monthly statewide average for any state in any month. Dallas, Texas hit or exceeded 100°F on 30 out of the 31 days in July. For the entire South climate region, which comprises Texas, Oklahoma, Kansas, Louisiana, Arkansas, and Mississippi, July 2011 was the warmest month on record for any of the climate regions.
As we noted in a previous blog, an unprecedented area of exceptional drought covered the United States in July, the largest area in the history of the U.S. Drought Monitor. 75% of Texas was in an exceptional drought, and the entire state of Oklahoma was in moderate to exceptional drought in July. The NCDC estimates that it would take 20 inches of rain to end the drought in one month in the worst hit areas of Oklahoma and Texas.
Figure 1. Texas and Oklahoma had its hottest and the state of Washington had its 11th coolest July on record last month, according to the NCDC.
Figure 2. Texas had its second driest July on record, and Oklahoma had its 9th driest according to the NCDC. California continues to be wetter than average, and last month was its 8th wettest July on record.
Angela
Reader Comments
Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 — Blog Index
That's a lot of days of 100 or hotter. But that's just Dallas; Wichita Falls--which is not so many miles from there--will today see its 76th day this year at or above 100. And today will be the 50th straight (and 69th out of the last 70) at that temperature. The record for most 100 or hotter days in a year there is 79; the city should tie that record this coming Saturday. (The previous record for most consecutive days, 42, was broken last week.)
Morning all...
Looks like things might get a little more active soon.
Another much needed rainy afternoon in S. FL... 80 percent chance of rain.
Ah. Sorry about your house. I know about the red clay too. We moved into our brand new mobile home in '94. In the middle of a flood. When EPAC Hurricane Rosa parked on top of us for about a week. The whole lot minus the drive way was red clay and gumbo mud. The new carpets didnt have a chance. Lol. Rita put a tree through it in '05. I guess Mother Nature finally gave us enough of a clue to NOT LIVE THERE! Lol. Fine! We moved! :)
The records with this heat wave are unimaginable. I have no idea how many days we have been over 100 here, but it seems like a long time. I keep wondering if we will keep climbing like we did for a three or four day period over Labor Day weekend a number of years ago when we hit 112. I was at a dog show and stepping outside to potty dogs was like walking into a brick wall of heat and humidity.
LOL! I call it Gumbo Soup! I show Papillons and they are primarily white, well, they are supposwed to be. Needless to say, I am working at getting them back to white so I can get back to showing.
Rita put a tree on my house, but it had two seperate roofs, and it didn't get through them. I did have three trees that ended up growing horizontally after Rita and had to have them cut out. I kept hoping they'd go back to vertical, but no... My roof was a tangle of different color shingles, we'd just point out the Rita shingles, Ike shingles and Gustav shingles.
Our only saving grace down here is our proximity to the gulf. In this case it's our friend keeping us a tiny bit under the century mark. Most of the time. Officially. Without factoring in the heat index. :)
Floater up on 92L. Good morning all.
Lol. The roofs around here are either new or blue. My parents have a Rita roof and an Ike roof too. :)
Link
Can't see if there's any vort as the 850 MB map for Africa only goes to 10N, which is annoying. Anyone know of a map to see vort east of 35W?
Interesting take on 92L and future 93L.
ABNT20 KNHC 101147
TWOAT
TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT WED AUG 10 2011
FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...
A LARGE AREA OF DISTURBED WEATHER ASSOCIATED WITH A TROPICAL WAVE
EXTENDS FROM THE SOUTHERN CAPE VERDE ISLANDS WESTWARD SEVERAL
HUNDRED MILES INTO THE TROPICAL ATLANTIC OCEAN. SHOWER AND
THUNDERSTORM ACTIVITY HAS BECOME MORE CONCENTRATED NEAR A BROAD
AREA OF LOW PRESSURE LOCATED ABOUT 400 MILES SOUTH-SOUTHWEST OF THE
SOUTHERN CAPE VERDE ISLANDS. A SECOND AREA OF SHOWERS AND
THUNDERSTORMS IS LOCATED JUST SOUTH OF THE SOUTHERNMOST CAPE VERDE
ISLANDS. ENVIRONMENTAL CONDITIONS APPEAR FAVORABLE FOR SOME
GRADUAL DEVELOPMENT OF THIS SYSTEM OVER THE NEXT COUPLE OF
DAYS...AND THIS SYSTEM HAS A LOW CHANCE...20 PERCENT...OF BECOMING
A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WESTWARD AT
10 TO 15 MPH.
THE REMNANTS OF EMILY ARE LOCATED ABOUT 715 MILES SOUTH-SOUTHEAST OF
CAPE RACE NEWFOUNDLAND...MOVING TOWARD THE NORTHEAST AT ABOUT 20
MPH. THE ASSOCIATED SHOWER ACTIVITY IS CURRENTLY DISORGANIZED...
AND ENVIRONMENTAL CONDITIONS ARE NOT CONDUCIVE FOR SIGNIFICANT
DEVELOPMENT AS THIS SYSTEM BEGINS TO INTERACT WITH A FRONTAL ZONE.
THIS SYSTEM HAS A LOW CHANCE...NEAR 0 PERCENT...OF REGENERATING
INTO A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.
ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.
$$
FORECASTER BRENNAN
TWOAT
TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT WED AUG 10 2011
FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...
A LARGE AREA OF DISTURBED WEATHER ASSOCIATED WITH A TROPICAL WAVE
EXTENDS FROM THE SOUTHERN CAPE VERDE ISLANDS WESTWARD SEVERAL
HUNDRED MILES INTO THE TROPICAL ATLANTIC OCEAN. SHOWER AND
THUNDERSTORM ACTIVITY HAS BECOME MORE CONCENTRATED NEAR A BROAD
AREA OF LOW PRESSURE LOCATED ABOUT 400 MILES SOUTH-SOUTHWEST OF THE
SOUTHERN CAPE VERDE ISLANDS. A SECOND AREA OF SHOWERS AND
THUNDERSTORMS IS LOCATED JUST SOUTH OF THE SOUTHERNMOST CAPE VERDE
ISLANDS. ENVIRONMENTAL CONDITIONS APPEAR FAVORABLE FOR SOME
GRADUAL DEVELOPMENT OF THIS SYSTEM OVER THE NEXT COUPLE OF
DAYS...AND THIS SYSTEM HAS A LOW CHANCE...20 PERCENT...OF BECOMING
A TROPICAL CYCLONE DURING THE NEXT 48 HOURS AS IT MOVES WESTWARD AT
10 TO 15 MPH.
THE REMNANTS OF EMILY ARE LOCATED ABOUT 715 MILES SOUTH-SOUTHEAST OF
CAPE RACE NEWFOUNDLAND...MOVING TOWARD THE NORTHEAST AT ABOUT 20
MPH. THE ASSOCIATED SHOWER ACTIVITY IS CURRENTLY DISORGANIZED...
AND ENVIRONMENTAL CONDITIONS ARE NOT CONDUCIVE FOR SIGNIFICANT
DEVELOPMENT AS THIS SYSTEM BEGINS TO INTERACT WITH A FRONTAL ZONE.
THIS SYSTEM HAS A LOW CHANCE...NEAR 0 PERCENT...OF REGENERATING
INTO A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.
ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.
$$
FORECASTER BRENNAN
92L up from 10%
No they did grow, they were worried Don would blow the cotton onto the ground, but that did not happen. So they have crops, due to extensive irrigation no doubt.
That doesn't cover south of 10N though... Sorry I forgot to type that. Was looking for a map like the convergence that covers more of the south Atlantic.
LOL. They have their percentages reversed but this is the current circles.
Link
It seems the NHC made a mistake with 92L. I believe they meant west-southwest and not south-southwest.
excellent question
Houston is on day 10 of 100 degree plus temps which is the third longest streak since 1895. The record is 14 days and we have a pretty good chance of beating that.
Not as hot as other places in Texas but the humidity is really driving up heat indexes.
Statement as of 4:59 am CDT on August 10, 2011
... Hot temperatures with heat indices between 106 and 110 degrees
are expected today across south Texas...
The combination of hot temperatures and elevated dewpoints will
produce heat indices between 106 and 110 degrees today from
midday through the early evening hours. Isolated
locations... especially urban areas... may briefly exceed 110
degrees.
This is from last night but looks like some type of circulation in that area.
must be what the GFS was picking up on in its last run..thanks!
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT WED AUG 10 2011
BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1015 UTC.
...TROPICAL WAVES...
TROPICAL WAVE IS ANALYZED FROM 13N29W TO 22N32W MOVING W AT 10
KT. SHORTWAVE INFRARED METEOSAT-9 SATELLITE IMAGERY REVEALS A
BROAD LOW TO MID-LEVEL CYCLONIC CIRCULATION IN THE VICINITY OF
13N29W AS A 1010 MB LOW...WHICH IS PRIMARILY THE FOCUS OF THE
MONSOON TROUGH GYRE ENCOMPASSING THE AREA FROM 08N-17N BETWEEN
21W-43W. THE WAVE IS EMBEDDED IN AN AREA OF ENHANCED TOTAL
PRECIPITABLE WATER VALUES LOCATED SW OF THE CAPE VERDE ISLANDS
FROM 10N-16N BETWEEN 22W-31W. SCATTERED MODERATE CONVECTION IS
FROM 12N-15N BETWEEN 29W-32W. ENVIRONMENTAL CONDITIONS APPEAR
FAVORABLE FOR SOME GRADUAL DEVELOPMENT OF THIS SYSTEM...BECOMING
A TROPICAL CYCLONE...OVER THE NEXT COUPLE OF DAYS...AS IT MOVES
WESTWARD AT 10 TO 15 MPH.
TROPICAL WAVE IS ANALYZED FROM 12N62W TO 19N57W MOVING W AT
10-15 KT. A SURFACE TROUGH IS LOCATED EAST OF THE WAVE AXIS NEAR
15N56W AND IS QUICKLY BECOMING ABSORBED INTO THE CYCLONIC FLOW
ASSOCIATED WITH THE TROPICAL WAVE. TOTAL PRECIPITABLE WATER
VALUES REMAIN ELEVATED WEST OF THE WAVE AXIS AND ARE MORE
CLOSELY ASSOCIATED WITH LOW-LEVEL CONVERGENCE FROM 16N60W TO
15N66W. THE COMBINATION OF THE WAVE AND LOW TO MID-LEVEL
CONVERGENCE BOUNDARY IS GENERATING SCATTERED MODERATE CONVECTION
FROM 14N-17N BETWEEN 61W-66W.
Yeah I put disclaimers up. It's hellish without a doubt. Even closer to the gulf than Houston. Sigh. Don't know if it will ever rain. Maybe we'll get a cold front. You know, in January. ;)
we had bad storms last night...Is this the leftovers from that?
He even indicated the shift in the upper level patters coming soon which poses a potential threat to the eastern CONUS
Three days and the cracks in my yard will get big enough for a small child to fall in
Link
so, apparently the top one os the bottom one and the bottom one is the top one. I was like, Emily was 92L???
Viewing: 851 - 901
Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 — Blog Index