Dr. Jeff Masters' WunderBlog

El Niño Watch issued by NOAA; Western Caribbean development next week?
Posted by: Dr. Jeff Masters, 13:55 GMT le 05 juin 2009 +1
NOAA's Climate Prediction Center issued an El Niño Watch yesterday, saying "that conditions are favorable for a transition from neutral to El Niño conditions during June - August 2009". The pattern of changes in surface winds, upper-level winds, sea surface temperatures, and deeper water heat content are all consistent with what has been observed during previous developing El Niños. As I discussed in detail in last Friday's post, most of our more advanced El Niño computer models are predicting a weak El Niño event for the coming Atlantic hurricane season. If this indeed occurs, it is likely that Atlantic hurricane activity will be suppressed due to the strong upper-level winds an El Niño usually brings to the tropical Atlantic, creating high wind shear that tears hurricanes apart.


Figure 1. Departure from average of the heat content of the upper 300 meters of the ocean in the Equatorial Eastern Pacific. Much of this increase in heat content is due to a large area of waters 2 - 4°C warmer than average at the thermocline (a depth of 50 - 150 meters). The heat content of the ocean has been steadily increasing since January, consistent with a developing El Niño episode. Image credit: NOAA's Climate Prediciton Center.

Western Caribbean development possible next week
An area of disturbed weather has developed over Central America and the adjacent waters of the Eastern Pacific and Western Caribbean, associated with a tropical wave interacting with the Intertropical Convergence Zone (ITCZ) in the Eastern Pacific. This disturbance has generated 1 - 2 inches of rain over Costa Rica and western Panama over the past day, and is likely to bring 4 - 6 more inches of rain to those areas and Nicaragua over the next 3 - 4 days, as the storm drifts northwards into the Western Caribbean. The subtropical jet stream, which is currently bringing high wind shear to the Caribbean, is expected to shift northwards next week, bringing low wind shear to the region. The last few runs of several of our major dynamical computer weather forecast models have been pointing to the possible development of a tropical depression southwest of Jamaica by Thursday of next week. Heavy rains from the disturbance should spread into Jamaica and Cuba by Thursday and Friday, and may affect the Bahamas, Haiti, and South Florida 7 - 8 days from now.


Figure 2. Visible satellite image of the Central American disturbance expected to cross over into the Western Caribbean next week.

I'll have an update this weekend, probably on Sunday.

Jeff Masters

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1151. scottsvb 17:34 GMT le 06 juin 2009    
CNN also reported Obama would get us out of this mess.. 9.4% unempolyment highest ever!..okay okay..I wont talk politics!
Member Since: 22 janvier 2006 Posts: 0 Comments: 1188
1152. Drakoen 17:34 GMT le 06 juin 2009    
The last sentence in number one seems to contradict the point in number 2. If development is not expected why even mention it. Local mets can tell you to expect heavy rainfall.
Member Since: 28 octobre 2006 Posts: 57 Comments: 29012
1153. Levi32 17:34 GMT le 06 juin 2009    
Quoting Weather456:



That was very quick


That's how it should be.
Member Since: 24 novembre 2005 Posts: 593 Comments: 25612
1155. Levi32 17:35 GMT le 06 juin 2009    
Quoting StormJunkie:
Afternoon all

Levi - I've noticed the same on the GFS. Seems several of the last runs have shown it having a hard time even getting out of the Carib. Much less out to sea. A run yesterday had the feature headed to Mex after a short trip through the Gulf. No telling where it would go if it even develops.

On a side note, are we gonna get the Great GA Land Swirl Revisited? Would not take much of a jump/jog for it to get over a little water and it is forecast to hang out in the same area for quite sometime.


Hmm....you really love that system don't you lol. I should never have mentioned that it was warm-core over the gulf =P

Well it's nearly stacked with the upper cut-off low over north Florida. The GFS has no handle on it whatsoever so I'm not even gonna try to describe what it does with it. I'm gonna be my own model and say that it should drift slowly towards the south or SE for a while, and may split into two pieces with one piece heading down into the Caribbean and the other piece going towards the NE eventually getting picked up by the westerlies.

I won't even let the thought of sub-tropical development east of Florida enter my mind...
Member Since: 24 novembre 2005 Posts: 593 Comments: 25612
1156. Patrap 17:36 GMT le 06 juin 2009    
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1157. WPBHurricane05 17:37 GMT le 06 juin 2009    
Point 2 should start off with "Elsewhere."
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1158. Cavin Rawlins 17:36 GMT le 06 juin 2009    
I guess they will perform autopsies on the bodies to find out the exact cause of death. If the cause of death was drowning, not every may of dies from hypoxia.
Member Since: 24 juillet 2005 Posts: 407 Comments: 19076
1159. hurricane23 17:37 GMT le 06 juin 2009    
Quoting clwstmchasr:
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT SAT JUN 6 2009

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

1. CLOUDINESS...SHOWERS...AND THUNDERSTORMS OVER THE SOUTHWESTERN
CARIBBEAN SEA ARE ASSOCIATED WITH A BROAD AND WEAK AREA OF LOW
PRESSURE. ALTHOUGH SIGNIFICANT DEVELOPMENT IS NOT LIKELY AT THIS
TIME...THIS SYSTEM SHOULD BRING LOCALLY HEAVY RAINS TO PORTIONS OF
CENTRAL AMERICA OVER THE NEXT COUPLE OF DAYS. THERE IS A LOW
CHANCE...LESS THAN 30 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL
CYCLONE DURING THE NEXT 48 HOURS.

2. TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS.

$$
FORECASTER PASCH/BERG
NNNN


Very interesting that the NHC has jumped onboard already.....



TPC is always on board lol 24hrs a day 7 days a week.Just cause theres no mention does not mean the current forcaster on duty is not monitering the area.I concur with there view on the situation no immediate threat for development as proximity to land should hamper things for a while.
Member Since: 14 mai 2006 Posts: 8 Comments: 13331
1160. scottsvb 17:37 GMT le 06 juin 2009    
Quoting Drakoen:
The last sentence in number one seems to contradict the point in number 2. If development is not expected why even mention it. Local mets can tell you to expect heavy rainfall.


2. is ment for elsewhere in the Atlantic/Carribean/GOM
Member Since: 22 janvier 2006 Posts: 0 Comments: 1188
1161. pottery 17:37 GMT le 06 juin 2009    
A nice rotation, at 25n 57w, with no convection associated.
Interesting though.

The area of heavy rains south-east of Trinidad is still building. Looking good.
Member Since: 24 octobre 2005 Posts: 0 Comments: 20866
1162. KEEPEROFTHEGATE (Mod) 17:39 GMT le 06 juin 2009    
Quoting clwstmchasr:
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT SAT JUN 6 2009

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

1. CLOUDINESS...SHOWERS...AND THUNDERSTORMS OVER THE SOUTHWESTERN
CARIBBEAN SEA ARE ASSOCIATED WITH A BROAD AND WEAK AREA OF LOW
PRESSURE. ALTHOUGH SIGNIFICANT DEVELOPMENT IS NOT LIKELY AT THIS
TIME...THIS SYSTEM SHOULD BRING LOCALLY HEAVY RAINS TO PORTIONS OF
CENTRAL AMERICA OVER THE NEXT COUPLE OF DAYS. THERE IS A LOW
CHANCE...LESS THAN 30 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL
CYCLONE DURING THE NEXT 48 HOURS.

2. TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS.

$$
FORECASTER PASCH/BERG
NNNN


Very interesting that the NHC has jumped onboard already.....

because there will be some slow dev this is what i like to call a hanger it will hang around till conditions allow dev and the window opens for that to occur
Member Since: 15 juillet 2006 Posts: 147 Comments: 41332
1163. clwstmchasr 17:39 GMT le 06 juin 2009    
The last sentence in number one seems to contradict the point in number 2. If development is not expected why even mention it. Local mets can tell you to expect heavy rainfall

They are not saying that it won't develop. They are saying that development is not expected within the next 48hours.
Member Since: 29 juillet 2006 Posts: 0 Comments: 2783
1164. scottsvb 17:39 GMT le 06 juin 2009    
Quoting KEEPEROFTHEGATE:
because there will be some slow dev this is what i like to call a hanger it will hang around till conditions allow dev and the window opens for that to occur



Also remember now this is up to 48hrs...and even the GFS shows no development within the next 96hrs..only a broad low pressure!
Member Since: 22 janvier 2006 Posts: 0 Comments: 1188
1165. Cavin Rawlins 17:40 GMT le 06 juin 2009    
Quoting hurricane23:


TPC is always on board lol 24hrs a day 7 days a week.Just cause theres no mention does not mean the current forcaster on duty is not monitering the area.I concur with there view on the situation no immediate threat for development as proximity to land should hamper things for a while.


True
Member Since: 24 juillet 2005 Posts: 407 Comments: 19076
1166. CybrTeddy 17:42 GMT le 06 juin 2009    
NOW we have something to look out. Keep tabs on it, await declaration of 93L too later today.
Member Since: 8 juillet 2005 Posts: 255 Comments: 20658
1167. Levi32 17:42 GMT le 06 juin 2009    
Quoting pottery:
A nice rotation, at 25n 57w, with no convection associated.
Interesting though.

The area of heavy rains south-east of Trinidad is still building. Looking good.


Yeah that's a nice little upper-level low there lol. It's gonna move off with the sub-tropical jet to the east.
Member Since: 24 novembre 2005 Posts: 593 Comments: 25612
1168. MeterologistDewon9 17:43 GMT le 06 juin 2009    
Has anyone seen that blob near the Lesser Antillies? Looks a little interesting. Also, looks like the Carribbean is getting active.
1169. hahaguy 17:44 GMT le 06 juin 2009    
More storms on it's way here.
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1170. Tropicsweatherpr 17:45 GMT le 06 juin 2009    
Invest 93L later today?
Member Since: 29 avril 2009 Posts: 67 Comments: 8795
1171. Cavin Rawlins 17:46 GMT le 06 juin 2009    
Quoting MeterologistDewon9:
Has anyone seen that blob near the Lesser Antillies? Looks a little interesting. Also, looks like the Carribbean is getting active.


Tropical Wave, upper winds too unfavorable
Member Since: 24 juillet 2005 Posts: 407 Comments: 19076
1172. cchsweatherman 17:47 GMT le 06 juin 2009    
Severe Thunderstorm Warning
SEVERE THUNDERSTORM WARNING
FLC011-086-061815-
/O.NEW.KMFL.SV.W.0056.090606T1717Z-090606T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
117 PM EDT SAT JUN 6 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
EASTERN BROWARD COUNTY IN SOUTH FLORIDA.
NORTHEASTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 215 PM EDT

* AT 112 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
FROM PENNSUCO TO MIRAMAR...AND MOVING NORTHEAST AT 15 MPH.

* THE STORM WILL AFFECT...
COOPER CITY...
NOVA SOUTHEASTERN UNIVERSITY...
PLANTATION...
HOLLYWOOD...
HALLANDALE...
LAUDERHILL...
AND SURROUNDING COMMUNITIES.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

LAT...LON 2597 8012 2586 8055 2631 8029 2626 8010
TIME...MOT...LOC 1715Z 241DEG 11KT 2605 8026

$$

GR
Member Since: 14 avril 2007 Posts: 8 Comments: 4928
1173. Drakoen 17:48 GMT le 06 juin 2009    
Quoting clwstmchasr:
The last sentence in number one seems to contradict the point in number 2. If development is not expected why even mention it. Local mets can tell you to expect heavy rainfall

They are not saying that it won't develop. They are saying that development is not expected within the next 48hours.


But they still give it a 30% chance anyways LOL? Usually they would say "Elsewhere, Tropical cyclone formation is not expected during the enxt 48 hours"
Member Since: 28 octobre 2006 Posts: 57 Comments: 29012
1175. Levi32 17:48 GMT le 06 juin 2009    
NHC 72-hour forecast surface map. They weaken the tropical wave currently near the islands as it moves south of Hispaniola in 48 hours and take it off the map at 72.

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1176. Levi32 17:49 GMT le 06 juin 2009    
Quoting Drakoen:


But they still give it a 30% chance anyways LOL? Usually they would say "Elsewhere, Tropical cyclone formation is not expected during the enxt 48 hours"


Hey, we've been talking about how the NHC isn't perfect lol.
Member Since: 24 novembre 2005 Posts: 593 Comments: 25612
1177. KEEPEROFTHEGATE (Mod) 17:50 GMT le 06 juin 2009    
Quoting CybrTeddy:
NOW we have something to look out. Keep tabs on it, await declaration of 93L too later today.
i figure if area continues to produce areas of perturb weather for next 12 to 24 hrs we will get our INV/93L proable before noon or just after noon on sunday

wait watch see mode activated
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1178. plywoodstatenative 17:54 GMT le 06 juin 2009    
here we go again, repeat #2 of yesterday. just lovely.
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1179. Drakoen 17:54 GMT le 06 juin 2009    
OMG!?!?!? It's banding guys!!??!?!!! Time for the pinhole eye:
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1180. Levi32 17:56 GMT le 06 juin 2009    
Quoting Drakoen:
OMG!?!?!? It's banding guys!!??!?!!! Time for the pinhole eye:


LOL
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1181. Cavin Rawlins 17:57 GMT le 06 juin 2009    
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1182. MeterologistDewon9 17:57 GMT le 06 juin 2009    
Quoting Drakoen:
OMG!?!?!? It's banding guys!!??!?!!! Time for the pinhole eye:


Yeah it is, what are the chances of a TD formin wit the low that is sittin off the coast of SC and Georgia?
1183. plywoodstatenative 17:57 GMT le 06 juin 2009    
Okay Drak, ease up on the coffee and sugar...
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1184. Drakoen 17:58 GMT le 06 juin 2009    
Quoting MeterologistDewon9:


Yeah it is, what are the chances of a TD formin wit the low that is sittin off the coast of SC and Georgia?


I'm not even thinking about that.
Member Since: 28 octobre 2006 Posts: 57 Comments: 29012
1186. Levi32 18:01 GMT le 06 juin 2009    
Quoting MeterologistDewon9:


Yeah it is, what are the chances of a TD formin wit the low that is sittin off the coast of SC and Georgia?


For one thing it's not off the coast it's over northern Florida/southern Georgia. I don't think it has much of a chance at all. Too much dry air and high surface pressures building in from the east. Anything would be sub-tropical but I don't think it's worth thinking about.
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1187. Drakoen 18:01 GMT le 06 juin 2009    
Quoting plywoodstatenative:
Okay Drak, ease up on the coffee and sugar...


Bring me my Cat 5 800mb 300mph now.
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1188. KEEPEROFTHEGATE (Mod) 18:01 GMT le 06 juin 2009    
Member Since: 15 juillet 2006 Posts: 147 Comments: 41332
1189. StormJunkie 18:01 GMT le 06 juin 2009    
Quoting Levi32:


Hmm....you really love that system don't you lol. I should never have mentioned that it was warm-core over the gulf =P

Well it's nearly stacked with the upper cut-off low over north Florida. The GFS has no handle on it whatsoever so I'm not even gonna try to describe what it does with it. I'm gonna be my own model and say that it should drift slowly towards the south or SE for a while, and may split into two pieces with one piece heading down into the Caribbean and the other piece going towards the NE eventually getting picked up by the westerlies.

I won't even let the thought of sub-tropical development east of Florida enter my mind...


In response to 1182...Levi just answered that for us...or not... :~)
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1190. MeterologistDewon9 18:02 GMT le 06 juin 2009    
So, tropics are active. Invest 93L will become TD-01 probably by 11 tonight or 5 tomorrow morning. Anna, by either 11 tomorrow morning or 5 tomorrow even. Then Bill is headin his way sometime next weekend.
1191. Drakoen 18:03 GMT le 06 juin 2009    
Quoting MeterologistDewon9:
So, tropics are active. Invest 93L will become TD-01 probably by 11 tonight or 5 tomorrow morning. Anna, by either 11 tomorrow morning or 5 tomorrow even. Then Bill is headin his way sometime next weekend.


Are you serious?
Member Since: 28 octobre 2006 Posts: 57 Comments: 29012
1192. pottery 18:03 GMT le 06 juin 2009    
A question --
The bodies found today from the aircraft that went down on Monday (5 days ago).
Not to sound macabre or anything, but it seems to me a long time for bodies to float. Initially, bodies sink, and float only when decomposition starts, and gasses are released into the body cavity.
If the bodies were inside the aircraft when it hit water, they would have gone down to 12,000 feet. Where the water temps are pretty cold. Delaying decomposition.
If the bodies were thrown from the aircraft before or during impact, they would sink (how deep, I'm not sure), then float as above.
But in any case, 5 days seems a long time, to me, for a body to float, before sinking forever.

Anyone have any knowledge on this ?
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1193. WPBHurricane05 18:03 GMT le 06 juin 2009    
Quoting hurricaneseason2006:
It's amazing what some people would say for a little attention. School's Monday so he should be gone by Monday.


Its called a joke.
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1194. MrstormX 18:04 GMT le 06 juin 2009    
Has the navy declared this 93L or is this just a NHC thing?
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1195. KEEPEROFTHEGATE (Mod) 18:04 GMT le 06 juin 2009    
Quoting hurricaneseason2006:
It's amazing what some people would say for a little attention. School's Monday so he should be gone by Monday.
just a little drama queen
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1196. plywoodstatenative 18:04 GMT le 06 juin 2009    
Lol, so this is what happens when bloggers go nuts.
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1197. Levi32 18:04 GMT le 06 juin 2009    
Quoting MeterologistDewon9:
So, tropics are active. Invest 93L will become TD-01 probably by 11 tonight or 5 tomorrow morning. Anna, by either 11 tomorrow morning or 5 tomorrow even. Then Bill is headin his way sometime next weekend.


You can't be serious...
Member Since: 24 novembre 2005 Posts: 593 Comments: 25612
1198. WPBHurricane05 18:04 GMT le 06 juin 2009    
Quoting MeterologistDewon9:
So, tropics are active. Invest 93L will become TD-01 probably by 11 tonight or 5 tomorrow morning. Anna, by either 11 tomorrow morning or 5 tomorrow even. Then Bill is headin his way sometime next weekend.


Did you just start tracking the tropics today? TD 1 was a couple of weeks ago. And where is it "official" we have 93L.
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1199. Levi32 18:05 GMT le 06 juin 2009    
Quoting MrstormX:
Has the navy declared this 93L or is this just a NHC thing?


I believe whenever something is mentioned in the TWO it usually becomes an invest, but if it is it will take time for the Navy site and SSD site to put it up.
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1200. Cavin Rawlins 18:06 GMT le 06 juin 2009    
If it forms it would be TD 2
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1201. Drakoen 18:05 GMT le 06 juin 2009    
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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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