262  
FGUS71 KCAR 110755  
ESFCAR  
MEC003-009-019-021-025-029-180800-  
 
WINTER/SPRING FLOOD POTENTIAL OUTLOOK  
NATIONAL WEATHER SERVICE CARIBOU ME  
355 AM EDT THU APR 11 2024  
 
...WINTER/SPRING FLOOD POTENTIAL OUTLOOK FOR NORTHERN, CENTRAL  
AND DOWNEAST MAINE...  
 
THIS IS THE ELEVENTH WINTER/SPRING FLOOD POTENTIAL OUTLOOK FOR  
2024, ISSUED BY THE NATIONAL WEATHER SERVICE IN CARIBOU, MAINE.  
THIS OUTLOOK IS FOR NORTHERN, CENTRAL, AND DOWNEAST MAINE FOR THE  
TWO WEEK PERIOD OF APRIL 11TH THROUGH APRIL 25TH, 2024.  
 
ICE JAM THREAT IS OVER FOR THE 2024 SEASON ON ALL RIVER BASINS.  
 
THE POTENTIAL FOR OPEN WATER FLOODING IS ABOVE NORMAL ACROSS  
DOWNEAST, EAST-CENTRAL MAINE, BANGOR REGION, MOOSEHEAD REGION AND  
INTO EASTERN AROOSTOOK COUNTY INCLUDING THE AROOSTOOK RIVER BASIN.  
THE POTENTIAL FOR OPEN WATER FLOODING IS NORMAL ACROSS THE NORTH  
WOODS, ST. JOHN, ALLAGASH & FISH RIVER BASINS IN NORTHERN MAINE.  
   
..LAKE ICE THICKNESS
 
 
LAKE ICE IS EXTREMELY DANGEROUS, DO NOT VENTURE ONTO THE ICE. FOR  
MORE INFORMATION ON ICE SAFETY VISIT THE MAINE WARDEN SERVICE  
WEBSITE WWW.MAINE.GOV/IFW/FISHING- BOATING/FISHING/ICE-SAFETY-  
TIPS.HTML  
 
FOR THE 2024 SEASON THE WINTER/SPRING FLOOD OUTLOOK (ESF) WILL BE  
IN GRAPHICAL FORMAT ON OUR WEBSITE  
WWW.WEATHER.GOV/CAR/SPRINGFLOODOUTLOOK  
   
..CLIMATE GUIDANCE FROM THE NORTHEAST RIVER FORECAST CENTER
 
 
EL NINO HAS CONTINUED TO WEAKEN ALTHOUGH ITS INFLUENCE HAS REMAINED  
AS AN ACTIVE SUBTROPICAL JET STREAM HAS CONTINUED TO ADVANCE  
MOISTURE LADEN LOW SYSTEMS INTO THE NORTHEAST. THIS ACTIVE TREND  
LOOKS TO CONTINUE FOR AWHILE LONGER BUT WITH SOME SHIFTING IN THE  
LOW TRACK PATTERN.  
 
A MODERATE STRENGTH EL NINO REMAINED AS OF 08 APRIL 2024 WITH A +1.2  
CELSIUS SEA SURFACE TEMPERATURE (SST) ANOMALY OBSERVED IN THE NINO  
3.4 REGION. THE LATEST THREE MONTH AVERAGE FROM JANUARY-MARCH 2024  
WAS +1.5 CELSIUS. SEA SURFACE TEMPERATURE (SST) ANOMALIES WERE  
COOLING MOST NOTABLY IN THE FAR EASTERN PACIFIC AND WERE EXPANDING  
ACROSS THE EQUATORIAL PACIFIC.  
 
THE NORTHERN ATLANTIC OSCILLATION (NAO) WHICH HAS BEEN NEGATIVE AND  
BEEN PROMOTING BLOCKING AND TROUGHING IS FORECAST TO TURN MORE  
NEUTRAL ALONG WITH THE ARCTIC OSCILLATION (AO). MEANWHILE THE  
PACIFIC NORTH AMERICAN (PNA) IS FORECAST TO BECOME MORE NEGATIVE  
WHICH WOULD PROMOTE MORE TROUGHING IN THE WESTERN CONUS. THIS SETUP  
WOULD TEND TO FAVOR WEAK RIDGING ACROSS THE SOUTHEASTERN U.S. AND  
MEAN TROUGHING FROM THE CENTRAL INTO THE WESTERN CONUS. OVERALL,  
THIS SETUP FAVORS A SOUTHWESTERLY FLOW OF MILDER AIR INTO THE  
NORTHEAST WITH A LOW TRACK GENERALLY FAVORED TO BE WEST OF MAINE.  
 
THE OFFICIAL NATIONAL WEATHER SERVICE 6 TO 14 DAY OUTLOOK FOR 16-24  
APRIL 2024 LEANS TOWARDS LIKELY ABOVE NORMAL TEMPERATURES AND NEAR  
NORMAL TO ABOVE NORMAL PRECIPITATION.  
 

 
 
SINKO  
 
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