490  
FXUS05 KWBC 181230  
PMD90D  
PROGNOSTIC DISCUSSION FOR LONG-LEAD SEASONAL OUTLOOKS  
NWS CLIMATE PREDICTION CENTER COLLEGE PARK MD  
830 AM EDT THU SEP 18 2025  
 
SUMMARY OF THE OUTLOOK FOR NON-TECHNICAL USERS  
 
SEA SURFACE TEMPERATURES (SSTS) ARE CURRENTLY NEAR-TO-BELOW AVERAGE ACROSS THE  
CENTRAL AND EASTERN EQUATORIAL PACIFIC OCEAN. THE ENSO ALERT SYSTEM STATUS  
CONTINUES WITH A LA NIñA WATCH, WHICH IS ISSUED WHEN CONDITIONS ARE FAVORABLE  
FOR THE DEVELOPMENT OF LA NIñA WITHIN THE NEXT 6 MONTHS. A TRANSITION FROM  
ENSO-NEUTRAL TO LA NIñA IS LIKELY IN THE NEXT COUPLE OF MONTHS, WITH A 71%  
CHANCE OF LA NIñA DURING OCTOBER-NOVEMBER-DECEMBER (OND) 2025. THEREAFTER, LA  
NIñA IS FAVORED BUT CHANCES DECREASE TO 54% IN DECEMBER-JANUARY-FEBRUARY (DJF)  
2025-26, WITH ENSO-NEUTRAL EXPECTED TO RETURN BY LATE WINTER AND SPRING.  
 
THE OCTOBER-NOVEMBER-DECEMBER (OND) 2025 TEMPERATURE OUTLOOK FAVORS  
ABOVE-NORMAL TEMPERATURES OVER MOST OF THE CONTIGUOUS U.S. (CONUS), WITH THE  
EXCEPTION OF EQUAL CHANCES (EC) OF ABOVE, NEAR, AND BELOW-NORMAL TEMPERATURES  
FORECAST FROM THE PACIFIC NORTHWEST EASTWARD ACROSS THE NORTHERN TIER TO THE  
UPPER GREAT LAKES REGION. PROBABILITIES FAVORING ABOVE-NORMAL TEMPERATURES  
RANGE FROM 50-60% OVER THE FOUR CORNERS REGION AND WEST TEXAS, THE NORTHEAST,  
AND SOUTHERN FLORIDA, AND PEAK AT 60-70% OVER NEW MEXICO AND PARTS OF  
NEIGHBORING STATES. ABOVE-NORMAL TEMPERATURES ARE ALSO FAVORED OVER MUCH OF  
ALASKA, EXCLUDING EAST-CENTRAL AND SOUTHEAST ALASKA, WHERE EC IS INDICATED.  
 
THE OCTOBER-NOVEMBER-DECEMBER (OND) 2025 PRECIPITATION OUTLOOK FAVORS  
ABOVE-NORMAL PRECIPITATION OVER MUCH OF THE FLORIDA PENINSULA, THE PACIFIC  
NORTHWEST EASTWARD TO THE NORTHERN HIGH PLAINS, AND MOST OF THE WESTERN HALF OF  
ALASKA. BELOW-NORMAL PRECIPITATION IS FAVORED OVER MUCH OF THE SOUTHERN CONUS.  
 
ELSEWHERE OVER THE U.S., EC IS FORECAST WHERE PROBABILITIES FOR EACH CATEGORY  
OF SEASONAL MEAN TEMPERATURES AND SEASONAL ACCUMULATED PRECIPITATION AMOUNTS  
ARE EXPECTED TO BE SIMILAR TO CLIMATOLOGICAL PROBABILITIES.  
 
BASIS AND SUMMARY OF THE CURRENT LONG-LEAD OUTLOOKS  
NOTE: FOR GRAPHICAL DISPLAYS OF THE FORECAST TOOLS DISCUSSED BELOW SEE:  
HTTP://WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/90DAY/TOOLS/BRIEFING  
 
CURRENT ATMOSPHERIC AND OCEANIC CONDITIONS  
 
ENSO-NEUTRAL CONTINUED IN AUGUST 2025, WITH NEAR-TO-BELOW AVERAGE SSTS OBSERVED  
ACROSS THE CENTRAL AND EASTERN EQUATORIAL PACIFIC. THE LATEST WEEKLY NIñO 3.4  
SST INDEX IS -0.5° C. NEGATIVE SUBSURFACE TEMPERATURE DEPARTURES (AVERAGED FROM  
180°-100°W) STRENGTHENED, WITH BELOW-AVERAGE TEMPERATURES PREVAILING FROM THE  
SURFACE TO A DEPTH OF 200M IN THE CENTRAL AND EASTERN PACIFIC. RELATIVELY WARM  
SURFACE AND SUBSURFACE WATER TEMPERATURES ARE CONFINED TO THE FAR WESTERN  
TROPICAL PACIFIC. LOW-LEVEL WIND ANOMALIES WERE EASTERLY ACROSS MOST OF THE  
EQUATORIAL PACIFIC, WHILE UPPER-LEVEL WIND ANOMALIES WERE WESTERLY OVER THE  
WESTERN AND EASTERN EQUATORIAL PACIFIC. DEEP TROPICAL CONVECTION WAS ENHANCED  
OVER INDONESIA AND THE MARITIME CONTINENT REGION, AND SUPPRESSED NEAR THE DATE  
LINE. THE CURRENT STATE OF THE COUPLED OCEAN-ATMOSPHERE SYSTEM REFLECTED THE  
CONTINUATION OF ENSO-NEUTRAL.  
 
AS FOR LOCAL IMPACTS, LOCAL SSTS ARE ABOVE-AVERAGE IN THE COASTAL WATERS  
SURROUNDING MOST OF ALASKA, ALONG THE WEST COAST OF THE CONUS, AND THE GULF AND  
SOUTHEAST COASTS. COOLER-THAN-NORMAL WATERS ARE OBSERVED OFF THE UPPER  
MID-ATLANTIC AND NORTHEAST COASTS. LOCAL INTERACTION BETWEEN SOIL MOISTURE AND  
TEMPERATURE AND PRECIPITATION DECLINES SIGNIFICANTLY AS THE GROWING SEASON  
DRAWS TO A CLOSE. THE CPC LEAKY BUCKET MODEL DEPICTS BELOW-AVERAGE SOIL  
MOISTURE OVER MUCH OF THE WESTERN U.S., THE MIDDLE AND LOWER MISSISSIPPI  
VALLEY, OHIO VALLEY, NORTHEAST, MID-ATLANTIC, AND FLORIDA, WITH SCATTERED  
REGIONS OF ABOVE-AVERAGE SOIL MOISTURE OVER THE UPPER MISSISSIPPI VALLEY, MUCH  
OF THE GREAT PLAINS, AND A PORTION OF THE SOUTHEAST. LOCAL INTERACTIONS WITH  
SOIL MOISTURE AND SSTS ARE CONSIDERED FOR EARLY LEADS WHERE APPLICABLE AND  
RELEVANT.  
 
PROGNOSTIC DISCUSSION OF SST FORECASTS  
 
THE NORTH AMERICAN MULTI-MODEL ENSEMBLE (NMME) FAVORS A SHORT-LIVED LA NIñA  
DURING FALL AND EARLY WINTER 2025-26. THE CPC NIñO 3.4 SST INDEX FAVORS A  
MINIMAL TO WEAK LA NIñA FROM THE SON SEASON THROUGH JANUARY-FEBRUARY-MARCH  
(JFM) 2026. IN CONTRAST, PREDICTIONS FROM THE INTERNATIONAL RESEARCH INSTITUTE  
(IRI) FAVOR ENSO-NEUTRAL TO PERSIST THROUGH FALL AND WINTER 2025-26. THIS  
CURRENT SET OF SEASONAL OUTLOOKS IS GOING WITH A TRANSITIONAL LEAD-1 PERIOD  
(OND 2025), FOLLOWED BY A WEAK LA NIñA FOR LEADS 2-4 (NDJ 2025-26 THROUGH JFM  
2026), WITH ENSO-NEUTRAL RE-EMERGING DURING LEADS 5-6 (FMA TO MAM 2026).  
 
PROGNOSTIC TOOLS USED FOR U.S. TEMPERATURE AND PRECIPITATION OUTLOOKS  
 
DYNAMICAL MODEL FORECASTS FROM THE NMME, THE COUPLED FORECAST SYSTEM MODEL  
VERSION 2 (CFSV2), AND THE COPERNICUS (C3S) MULTI-MODEL ENSEMBLE SYSTEM WERE  
USED EXTENSIVELY FOR THE FIRST SIX LEADS WHEN THEY ARE AVAILABLE, AS WAS THE  
OBJECTIVE, HISTORICAL SKILL WEIGHTED CONSOLIDATION AND CALIBRATION, BRIDGING,  
AND MERGING (CBAM) GUIDANCE, THAT COMBINES BOTH DYNAMICAL AND STATISTICAL  
FORECAST INFORMATION. A CONSOLIDATION OF STATISTICAL TOOLS INCLUDING THE  
ENSO-OCN TOOL, WHICH REPRESENTS THE COMBINED INFLUENCE OF ENSO (WHEN ACTIVE)  
AND DECADAL TIMESCALE TRENDS IN TEMPERATURE AND PRECIPITATION (UTILIZING THE  
OPTIMUM CLIMATE NORMAL, OCN) AND DYNAMICAL MODELS IS USED FOR THE FIRST SIX  
LEADS. FOLLOWING THIS, THE ENSO-OCN FORECAST TOOL IS USED MORE EXTENSIVELY.  
DECADAL VARIABILITY AND TRENDS ARE DETERMINED FROM THE OCN, REPRESENTING THE  
DIFFERENCE BETWEEN THE MOST RECENT 15-YEAR PERIOD AVERAGE SEASONAL TEMPERATURE  
OR PRECIPITATION AND THE AVERAGE FOR THE CLIMATOLOGY PERIOD, FROM 1991-2020. LA  
NIñA TEMPERATURE AND PRECIPITATION HISTORICAL COMPOSITES WERE USED FOR THE NDJ  
2025-26, DJF 2025-26, AND JFM 2026 SEASONS.  
 
PROGNOSTIC DISCUSSION OF OUTLOOKS - OND 2025 TO OND 2026  
 
TEMPERATURE  
 
FOR THE OND 2025 TEMPERATURE OUTLOOK, ABOVE-NORMAL TEMPERATURES ARE FAVORED  
OVER MOST OF THE CONTIGUOUS U.S. (CONUS), WITH THE EXCEPTION OF EC FROM THE  
PACIFIC NORTHWEST EASTWARD ACROSS THE NORTHERN TIER TO THE UPPER GREAT LAKES  
REGION. PROBABILITIES FAVORING ABOVE-NORMAL TEMPERATURES RANGE FROM 50-60% OVER  
THE FOUR CORNERS REGION AND WEST TEXAS, THE NORTHEAST, AND SOUTHERN FLORIDA,  
AND PEAK AT 60-70% OVER NEW MEXICO AND PARTS OF NEIGHBORING STATES.  
ABOVE-NORMAL TEMPERATURES ARE ALSO FAVORED OVER MUCH OF ALASKA, EXCLUDING  
EAST-CENTRAL AND SOUTHEAST ALASKA, WHERE EC IS INDICATED. THE WIDESPREAD  
COVERAGE OF FAVORED ABOVE-NORMAL TEMPERATURES IS CONSISTENT WITH MOST DYNAMICAL  
AND STATISTICAL MODEL GUIDANCE AND WITH TRENDS. RELATIVELY WARM SSTS ARE A  
PARTIAL CONTRIBUTOR TO THE WIDESPREAD ANOMALOUS WARMTH. IN NORTHWESTERN ALASKA,  
PROBABILITIES OF ABOVE-NORMAL TEMPERATURES REACH 50-60%, TIED TO THE  
CLIMATOLOGICAL DELAY IN THE ONSET OF SEA ICE IN THAT REGION. IN SHARP CONTRAST  
TO THIS, THE NCAR_CESM1 AND NCAR_CCSM4 MODELS FORECAST BELOW-NORMAL  
TEMPERATURES FOR MOST OF THE STATE OF ALASKA. THE SST-CA TOOL (CONSTRUCTED  
ANALOG USING SST ANOMALIES) FORECASTS A RELATIVELY COLD SOUTHEAST ALASKA DURING  
OND 2025.  
 
FOR LEADS 2-6 (NDJ 2025-26 THROUGH MAM 2026), THE TEMPERATURE OUTLOOKS ARE  
CONSISTENT WITH THE PREDICTED ONSET, OCCURRENCE, AND DECAY OF LA NIñA. THE  
CPC-IRI CONSENSUS FORECAST PREDICTS THE LA NIñA WILL TRANSITION TO ENSO-NEUTRAL  
SOMETIME DURING THE JFM 2026 SEASON, WHILE THE CPC ENSO 3.4 SST CONSOLIDATION  
FORECAST SHOWS THE RE-EMERGENCE OF ENSO-NEUTRAL BY FMA 2026. FROM NDJ THROUGH  
MAM, AN INITIALLY SMALL AREA OF FAVORED BELOW-NORMAL TEMPERATURES OVER WESTERN  
WASHINGTON EXPANDS EASTWARD WITH TIME TO INCLUDE PARTS OF THE NORTHERN ROCKIES,  
NORTHERN PLAINS, AND MINNESOTA CULMINATING IN PEAK SPATIAL COVERAGE DURING FMA  
2026. BY MAM, ONLY A SMALL REMNANT OF FAVORED BELOW-NORMAL TEMPERATURES IS  
DEPICTED ALONG THE BORDER BETWEEN THE NORTHERN PLAINS AND THE CANADIAN  
PROVINCES OF SASKATCHEWAN AND MANITOBA. THE LARGE AREA OF FAVORED ABOVE-NORMAL  
TEMPERATURES DURING THE OND SEASON IS PREDICTED TO GRADUALLY SHRINK AND RECEDE  
SOUTHWARD AND EASTWARD DURING THE LATE FALL AND EARLY WINTER TO A RELATIVE  
MINIMUM DURING JFM/FMA 2026. BY THAT TIME, FAVORED ABOVE-NORMAL TEMPERATURES  
ARE PREDICTED TO BE LIMITED TO THE FAR SOUTHERN AND FAR EASTERN PORTIONS OF THE  
CONUS. BY MAM 2026 AND BEYOND, THE AREA OF FAVORED ANOMALOUS WARMTH IS  
PREDICTED TO EXPAND ONCE AGAIN NORTHWARD AND SOMEWHAT WESTWARD TO INCLUDE  
NEARLY ALL OF THE CONUS BY NEXT FALL (SON AND OND 2026). THE TEMPERATURE  
OUTLOOKS AT THESE LEADS (FROM MAM 2026 ONWARDS) ARE LARGELY BASED ON HISTORICAL  
LONG-TERM TRENDS. DURING MOST OF THESE SEASONS, THE GREATEST CHANCE OF  
ABOVE-NORMAL TEMPERATURES (50-60%) IS INDICATED OVER THE WEST, THE NORTHEAST,  
AND THE GENERAL VICINITY OF FLORIDA. FOR ALASKA, THE COMBINATION OF DYNAMICAL  
AND STATISTICAL MODELS, AND TRENDS, FAVORED ABOVE-NORMAL TEMPERATURES FOR MUCH  
OF WESTERN AND NORTHERN ALASKA THROUGHOUT THE FALL AND WINTER. THE MOST LIKELY  
AREA TO REGISTER BELOW-NORMAL TEMPERATURES DURING THE NEXT 6 MONTHS IS  
SOUTHEAST ALASKA AND ADJACENT PORTIONS OF SOUTH-CENTRAL ALASKA, FROM DJF  
2025-26 THROUGH FMA 2026, BASED ON LA NIñA COMPOSITES AND TO SOME DEGREE,  
NUMERICAL MODEL GUIDANCE. FROM SPRING 2026 ONWARDS, THE ALASKA TEMPERATURE  
OUTLOOKS ARE DOMINATED BY LONG-TERM HISTORICAL TRENDS.  
 
PRECIPITATION  
 
FOR THE OND 2025 PRECIPITATION OUTLOOK, ABOVE-NORMAL PRECIPITATION IS FAVORED  
OVER MUCH OF THE FLORIDA PENINSULA, THE PACIFIC NORTHWEST EASTWARD TO THE  
NORTHERN HIGH PLAINS, AND MOST OF THE WESTERN HALF OF ALASKA. THE WET SIGNAL  
ACROSS FLORIDA IS PARTLY DUE TO THE TIME OF YEAR, AS TROPICAL CYCLONES  
OCCASIONALLY FORM IN THE CARIBBEAN SEA OR GULF OF AMERICA AND TRACK  
NORTHEASTWARD OR EASTWARD ACROSS THE STATE. THIS IS SUPPORTED BY THE CALIBRATED  
C3S, AND SOME OF THE MODELS THAT COMPRISE THE C3S ENSEMBLE SYSTEM. THE  
NORTHWESTERN CONUS WET SIGNAL (ESPECIALLY OVER THE INTERIOR) IS CONSISTENT WITH  
MANY OF THE DYNAMICAL AND STATISTICAL TOOLS, AND IS RELATED TO THE EXPECTED  
MEAN PACIFIC JET STREAM POSITION ASSOCIATED WITH LA NIñA (ESPECIALLY DURING THE  
SECOND HALF OF THIS SEASON), AND THE CLIMATOLOGICAL EARLY STAGES OF THE RAINY  
SEASON ALONG THE WEST COAST. THE WETTER-THAN-NORMAL CONDITIONS FAVORED OVER  
MOST OF THE WESTERN HALF OF ALASKA ARE SUPPORTED BY MUCH OF THE NMME AND C3S  
MODEL GUIDANCE AND RELATIVELY WARM SSTS SURROUNDING MOST OF THE STATE. THIS  
PATTERN IS ALSO COMMONLY OBSERVED DURING COLD SEASON LA NIñAS FEATURING HIGH  
PRESSURE OVER THE NORTHEASTERN PACIFIC AND BROAD ONSHORE FLOW ACROSS THE  
WESTERN PART OF ALASKA. BELOW-NORMAL PRECIPITATION IS FAVORED OVER MUCH OF THE  
SOUTHERN CONUS, AND THIS IS BORNE OUT BY A LARGE MAJORITY OF THE GUIDANCE. THIS  
BROAD AREA OF FAVORED BELOW-NORMAL PRECIPITATION EXTENDS OVER THE WESTERN GULF  
COAST REGION AND THE INTERIOR SOUTHEAST, RELATED TO A SEASONAL TENDENCY FOR  
WESTERLY WINDS TO BECOME MORE DOMINANT IN THIS REGION, AND THE PREFERENCE FOR  
ANY TROPICAL CYCLONES TO BE SHUNTED EASTWARD AND NORTHEASTWARD ACROSS FLORIDA  
AND THE WESTERN ATLANTIC. ELSEWHERE OVER THE CONUS AND ALASKA, NO SINGLE  
TERCILE CLASS IS FAVORED OVER ANOTHER, SO EC IS INDICATED.  
 
AS WE MOVE FORWARD INTO THE LATE FALL AND WINTER, LA NIñA PRECIPITATION  
COMPOSITES AND REGRESSIONS WERE ALSO CONSULTED, IN ADDITION TO THE USUAL  
DYNAMICAL AND STATISTICAL MODEL GUIDANCE. FOR LEADS 2-4 (NDJ 2025-26 THROUGH  
JFM 2026), WHICH COINCIDES WITH THE PEAK OF A PREDICTED WEAK LA NIñA), THE AREA  
OF FAVORED ABOVE-NORMAL PRECIPITATION ACROSS THE NORTHWEST GENERALLY SHIFTS  
AND/OR EXPANDS EASTWARD, WHILE A NEW WET SIGNAL (I.E. AN AREA OF ABOVE-NORMAL  
PRECIPITATION) IS FAVORED TO DEVELOP OVER THE CENTRAL AND SOUTHERN GREAT LAKES  
REGION IN NDJ, AND EXPAND SOUTH-SOUTHWESTWARD TO THE LOWER MISSISSIPPI VALLEY  
THROUGH FMA 2026. DRIER-THAN-NORMAL CONDITIONS ARE FAVORED DURING THIS SAME  
PERIOD (NDJ THROUGH JFM) ACROSS A LARGE PORTION OF THE SOUTHERN TIER OF THE  
CONUS, WITH SLIGHTLY ELEVATED PROBABILITIES DEPICTED OVER THE  
SOUTHWEST/CALIFORNIA AND PORTIONS OF THE SOUTHEAST. THIS IS GENERALLY SUPPORTED  
BY MANY OF THE TOOLS, SUCH AS THE CALIBRATED VERSIONS OF THE C3S AND NMME,  
CBAM, AND LA NIñA HISTORICAL COMPOSITES. THE ALASKA PRECIPITATION OUTLOOKS FOR  
THIS SAME PERIOD TILT THE ODDS TOWARDS ABOVE-NORMAL PRECIPITATION FOR MUCH OF  
THE STATE, EXCLUDING SOUTHEAST ALASKA AND THE CENTRAL AND WESTERN ALEUTIANS.  
THIS IS CONSISTENT WITH MANY OF THE TOOLS, SUCH AS THE CALIBRATED NMME AND C3S,  
CBAM, THE CONSOLIDATIONS, AND TO SOME DEGREE, TRENDS.  
 
FOR LEADS 5-6 (FMA AND MAM 2026), THE FAVORED WET SIGNALS IN THE NORTHWEST AND  
EAST-CENTRAL CONUS ARE PREDICTED TO WEAKEN AND DISAPPEAR WITH TIME, WITH ONLY A  
SINGLE WET SIGNAL REMAINING IN MAM OVER THE VICINITY OF THE UPPER MISSISSIPPI  
VALLEY AND SURROUNDING AREAS. THE RELATIVE DRYNESS OVER THE SOUTHERN CONUS IS  
FORECAST TO SPLIT INTO TWO COMPONENTS; ONE OVER THE SOUTHWEST AND ONE OVER THE  
SOUTHEAST IN FMA, WITH ONLY THE SOUTHWEST DRY SIGNAL LINGERING INTO MAM.  
ALASKA’S WET SIGNAL IS FORECAST BY SOME MODEL GUIDANCE TO SHRINK BACK TO  
NORTHWESTERN ALASKA BY MAM 2026. FROM LEAD 7 (AMJ 2026) ONWARD, THE  
PRECIPITATION SIGNALS ARE GENERALLY CONSISTENT WITH LONG-TERM TRENDS AS  
DEPICTED BY THE OCN TOOL. DURING LEADS 7-10, A TILT TOWARDS BELOW-NORMAL  
PRECIPITATION IS FAVORED FOR THE NORTHWESTERN PART OF THE CONUS, AND A TILT  
TOWARDS ABOVE-NORMAL PRECIPITATION IS FAVORED FOR PARTS OF THE EAST. THE WET  
SIGNAL IN THE EAST CONTINUES THROUGH LEAD 11 (ASO 2026), WHILE THE DRY SIGNAL  
IN THE NORTHWESTERN CONUS GRADUALLY FADES AND SPLITS INTO TWO AREAS OF SLIGHTLY  
FAVORED BELOW-NORMAL PRECIPITATION; ONE OVER THE SOUTHWEST AND THE OTHER OVER  
THE UPPER MISSISSIPPI VALLEY. BY LEAD 13 (OND 2026), TRENDS ALSO FAVOR THE  
REAPPEARANCE OF A DRY SIGNAL OVER THE WESTERN GULF COAST REGION.  
 
FORECASTER: ANTHONY ARTUSA  
 
THE CLIMATIC NORMALS ARE BASED ON CONDITIONS BETWEEN 1991 AND 2020, FOLLOWING  
THE WORLD METEROLOGICAL ORGANIZATION CONVENTION OF USING THE MOST RECENT 3  
COMPLETE DECADES AS THE CLIMATIC REFERENCE PERIOD. THE PROBABILITY ANOMALIES  
FOR TEMPERATURE AND PRECIPITATION BASED ON THESE NEW NORMALS BETTER REPRESENT  
SHORTER TERM CLIMATIC ANOMALIES THAN THE FORECASTS BASED ON OLDER NORMALS.  
 
FOR A DESCRIPTION OF OF THE STANDARD FORECAST TOOLS - THEIR SKILL- AND THE  
FORECAST FORMAT PLEASE SEE OUR WEB PAGE AT  
HTTP://WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/LONG_RANGE/TOOLS.HTML  
(USE LOWER CASE LETTERS)  
INFORMATION ON THE FORMATION OF SKILL OF THE CAS FORECASTS MAY BE FOUND AT:  
HTTP://WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/SOILMST_MONITORING/US/OUTLOOK/OUTLOOK.SHTM  
L  
(USE LOWERCASE LETTERS)  
NOTES - THESE CLIMATE OUTLOOKS ARE INTENDED FOR USE PRIOR TO THE START OF THEIR  
VALID PERIOD. WITHIN ANY GIVEN VALID PERIOD OBSERVATIONS AND SHORT AND MEDIUM  
RANGE FORECASTS SHOULD BE CONSULTED.  
 
THIS SET OF OUTLOOKS WILL BE SUPERSEDED BY THE ISSUANCE OF THE NEW SET NEXT  
MONTH ON OCT 16 2025  
 
1991-2020 BASE PERIOD MEANS WERE IMPLEMENTED EFFECTIVE WITH THE MAY 20, 2021  
FORECAST RELEASE.  

 
 
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