361
FXUS06 KWBC 021921
PMDMRD
PROGNOSTIC DISCUSSION FOR 6 TO 10 AND 8 TO 14 DAY OUTLOOKS
NWS CLIMATE PREDICTION CENTER COLLEGE PARK, MD
300 PM EDT TUE JUNE 02 2026
6-10 DAY OUTLOOK FOR JUN 08 - 12 2026
THE ECENS, GEFS, AND CMCE ENSEMBLE MEANS ARE IN GOOD AGREEMENT TODAY ON THE
6-10 DAY MID-LEVEL CIRCULATION PATTERN. BELOW-NORMAL 500-HPA HEIGHTS AND
WIDESPREAD TROUGHING IS PREDICTED OVER MUCH OF THE NORTH POLAR REGION, WITH
ABOVE-NORMAL 500-HPA HEIGHTS AND WIDESPREAD RIDGING FORECAST OVER MUCH OF THE
MIDDLE LATITUDES OF THE NORTHERN HEMISPHERE. AT HIGH LATITUDES, A CLOSED-OFF
TROUGH AND ASSOCIATED NEGATIVE HEIGHT ANOMALIES ENCOMPASS MUCH OF THE ARCTIC
OCEAN AND ALASKA, WITH THIS FEATURE FAVORED TO BE DEEPER TODAY COMPARED TO
YESTERDAY. WEAK TROUGHING IN THE FULL HEIGHT FIELD CONTINUES SOUTHWARD OVER
SOUTHEAST ALASKA AND NEAR OR JUST INLAND OF THE WEST COAST OF THE CONTIGUOUS
U.S. (CONUS). AN ANOMALOUS RIDGE IS FORECAST OVER THE EASTERN PACIFIC, AND A
STRONG ANOMALOUS RIDGE IS PREDICTED FROM EAST-CENTRAL CANADA SOUTHWARD AND
SOUTHWESTWARD ACROSS MUCH OF THE INTERIOR CONUS. THE OFFICIAL HEIGHT BLEND
PREDICTS MAXIMUM POSITIVE HEIGHT ANOMALIES OF 150-180 METERS IN THE VICINITY OF
JAMES BAY, CANADA. A WEAK MID-LEVEL TROUGH IS PREDICTED NEAR OR JUST EAST OF
THE ATLANTIC COAST. NEAR TO SLIGHTLY ABOVE-NORMAL HEIGHTS ARE FAVORED OVER THE
GULF COAST STATES. MID-LEVEL RIDGING IS FORECAST NORTH OF HAWAII, WITH
NEAR-NORMAL HEIGHTS FAVORED ACROSS THE ISLANDS.
THE 6-10 DAY TEMPERATURE OUTLOOK FAVORS ABOVE-NORMAL TEMPERATURES OVER MOST OF
THE CONUS, ASSOCIATED WITH THE BROAD, STRONG MID-LEVEL RIDGE PREDICTED FROM
EAST-CENTRAL CANADA SOUTHWARD AND SOUTHWESTWARD ACROSS MUCH OF THE INTERIOR
CONUS, AND THE PREDOMINANCE OF SOUTHERLY LOW-LEVEL FLOW. MAXIMUM PROBABILITIES
OF 80-90% ARE FAVORED OVER PARTS OF THE UPPER MISSISSIPPI VALLEY. NEAR-NORMAL
TEMPERATURES ARE FAVORED OVER THE PACIFIC NORTHWEST AND MUCH OF NORTHERN
CALIFORNIA. OVER MUCH OF THE SOUTHEAST AND GULF COAST REGION, THE REFORECAST
TEMPERATURE GUIDANCE APPEARED TOO WARM GIVEN THE LARGE POSITIVE HEIGHT ANOMALY
NEAR HUDSON BAY, AND BIAS-CORRECTED AND RAW TEMPERATURE TOOLS WERE FAVORED
INSTEAD WHICH SUPPORTED A WIDE SWATH OF NEAR-NORMAL TEMPERATURES. BELOW-NORMAL
TEMPERATURES ARE FAVORED OVER MOST OF ALASKA, BASED ON THE PROXIMITY OF A
PREDICTED MID-LEVEL TROUGH AND BELOW-NORMAL HEIGHTS. OVER THE SUBTROPICS, NEAR-
TO ABOVE-NORMAL TEMPERATURES ARE FAVORED FOR THE HAWAIIAN ISLANDS.
THE 6-10 DAY PRECIPITATION OUTLOOK SLIGHTLY FAVORS WETTER-THAN-NORMAL
CONDITIONS FROM THE PACIFIC NORTHWEST AND NORTHERN PORTIONS OF CALIFORNIA
EASTWARD TO NEAR THE CONTINENTAL DIVIDE. EAST OF THE DIVIDE, ABOVE-NORMAL
PRECIPITATION IS FAVORED TO THE MISSISSIPPI RIVER, THE SOUTHERN OHIO AND
TENNESSEE VALLEYS, AND THE SOUTHEAST. OVER THE PACIFIC NORTHWEST, THIS IS
ASSOCIATED WITH A WEAK MID-LEVEL TROUGH. DISTURBANCES ROUNDING THE WESTERN
FLANK OF THE HUDSON BAY RIDGE ARE FAVORED TO BRING ABOVE-NORMAL PRECIPITATION
TO PARTS OF THE NORTH-CENTRAL CONUS. FROM THE SOUTHERN PLAINS EASTWARD ACROSS
MUCH OF THE SOUTHEAST, WIDESPREAD GULF MOISTURE INFLOW INTERACTING WITH ANY
WEAK FRONTAL BOUNDARIES FAVORS ELEVATED CHANCES FOR WETTER-THAN-NORMAL
CONDITIONS. AN AREA OF FAVORED BELOW-NORMAL PRECIPITATION IS DEPICTED OVER THE
CENTRAL AND EASTERN GREAT LAKES REGION, AND MUCH OF THE NORTHEAST, BEING
LOCATED CLOSER TO THE PREDICTED AREA OF MAXIMUM POSITIVE HEIGHT ANOMALIES. IN
THE ALASKA DOMAIN, ABOVE-NORMAL PRECIPITATION IS FAVORED FOR MOST OF THE STATE
OF ALASKA, DUE TO ONSHORE FLOW ALONG AND AHEAD OF A PREDICTED MEAN TROUGH AS IT
ADVANCES SOUTHWARD OVER THE STATE. ABOVE-NORMAL PRECIPITATION IS ALSO FAVORED
FOR THE HAWAIIAN ISLANDS BASED ON AUTOMATED AND ERFCON PRECIPITATION FORECASTS.
THE OFFICIAL 6-10 DAY 500-HPA HEIGHT BLEND CONSISTS OF 30% OF TODAY'S 0Z GFS
ENSEMBLE MEAN CENTERED ON DAY 8, 40% OF TODAY'S 0Z EUROPEAN ENSEMBLE MEAN
CENTERED ON DAY 8, AND 30% OF TODAY'S 0Z CANADIAN ENSEMBLE MEAN CENTERED ON DAY
8
FORECAST CONFIDENCE FOR THE 6-10 DAY PERIOD: ABOVE-AVERAGE, 4 ON A SCALE OF
1-5, DUE TO GENERALLY GOOD AGREEMENT AMONG THE VARIOUS HEIGHT AND TEMPERATURE
TOOLS, WITH A BIT MORE UNCERTAINTY AMONG THE PRECIPITATION MODEL GUIDANCE.
8-14 DAY OUTLOOK FOR JUN 10 - 16 2026
THE ECENS, GEFS, AND CMCE ENSEMBLE MEANS ARE IN FAIRLY GOOD AGREEMENT TODAY ON
THE 8-14 DAY MID-LEVEL CIRCULATION PATTERN, THOUGH THERE ARE SOME VARIATIONS
FORECAST IN BOTH AMPLITUDE AND PHASE. IN THE ALASKA DOMAIN, THE THREE ENSEMBLE
MEANS PREDICT A WEAKENING TROUGH OVER NORTHERN AND WEST-CENTRAL PORTIONS OF THE
STATE, WITH THE CMCE FEATURING THE SHALLOWEST TROUGH. MID-LEVEL RIDGING
CONTINUES OVER EAST-CENTRAL CANADA, WITH ONLY THE 6Z GEFS EXTENDING THIS RIDGE
ACROSS THE CENTRAL AND SOUTHWESTERN CONUS. THE ECENS AND CMCE FORECAST A
NEAR-ZONAL FLOW PATTERN ACROSS THE CENTRAL CONUS. THERE ARE UPSTREAM
DIFFERENCES BETWEEN THE GEFS AND THE ECENS/CMCE REGARDING THE EASTERN PACIFIC
RIDGE, WITH THE GEFS DEPICTING A SLIGHTLY MORE WESTWARD RIDGE AXIS POSITION
(CENTERED AROUND 145W) AND THE OTHER TWO SOLUTIONS FAVORING A MORE EASTWARD
POSITION (CENTERED BETWEEN 130W-140W). OVER THE SOUTHEASTERN QUARTER OF THE
LOWER 48 STATES, A WEAK TROUGH IS FAVORED ALONG OR JUST OFF THE ATLANTIC COAST,
WITH NEAR TO SLIGHTLY ABOVE-NORMAL HEIGHTS. NEAR-NORMAL 500-HPA HEIGHTS ARE
FORECAST TO PERSIST ACROSS THE HAWAIIAN ISLANDS, WITH MID-LEVEL RIDGING TO THE
NORTHEAST.
THE WEEK-2 TEMPERATURE OUTLOOK FAVORS WARMER-THAN-NORMAL MEAN TEMPERATURES OVER
MOST OF THE LOWER 48 STATES, BASED ON WIDESPREAD POSITIVE HEIGHT ANOMALIES AND
SOUTHERLY LOW-LEVEL FLOW. THE WIDESPREAD ANOMALOUS WARMTH IS STRONGLY SUPPORTED
BY THE REFORECAST-CALIBRATED AND AUTOMATED TEMPERATURE TOOLS. OVER MOST OF THE
SOUTHEAST, LOWER MISSISSIPPI VALLEY, AND EASTERN TEXAS, TEMPERATURES ARE
FAVORED TO BE NEAR-NORMAL. AS WAS THE CASE WITH THE EARLIER 6-10 DAY PERIOD,
THE BIAS-CORRECTED AND RAW TEMPERATURE TOOLS WERE GIVEN GREATER SUBJECTIVE
WEIGHT THAN THE REFORECAST TEMPERATURE TOOLS, GIVEN THE PREDICTION OF THE
STRONG RIDGE CENTER NEAR HUDSON BAY. SOME OF THE WEEK-2 TEMPERATURE GUIDANCE
DEPICTED AN AREA OF SURFACE LOW PRESSURE FORMING NEAR THE CAROLINAS, WHICH, IF
CORRECT, WOULD FAVOR REDUCED TEMPERATURES AND INCREASED PRECIPITATION OVER THE
SOUTHEAST. BELOW-NORMAL TEMPERATURES ARE FAVORED OVER WESTERN AND CENTRAL
ALASKA, WITH MOSTLY NEAR-NORMAL TEMPERATURES FAVORED OVER EASTERN ALASKA.
CHANCES OF ABOVE-NORMAL TEMPERATURES ARE ELEVATED FOR MOST OF THE HAWAIIAN
ISLANDS.
THE WEEK-2 PRECIPITATION OUTLOOK FAVORS A SLIGHT TILT IN THE ODDS OF
ABOVE-NORMAL PRECIPITATION FROM THE VICINITY OF THE ROCKIES EASTWARD TO THE
ATLANTIC COAST, EXCLUDING MUCH OF THE GREAT LAKES REGION, NORTHERN OHIO VALLEY,
NORTHERN HALF OF THE APPALACHIANS, NORTHEAST, AND UPPER MID-ATLANTIC WHERE
NEAR-NORMAL PRECIPITATION IS FAVORED. THE PRECIPITATION TOOLS WERE ALL OVER THE
PLACE REGARDING ANY PREFERRED REGION OF FAVORED BELOW-NORMAL PRECIPITATION;
HENCE THE BROAD COVERAGE OF NEAR-NORMAL PRECIPITATION. THE REASONING BEHIND THE
WIDESPREAD WEAK TILT TOWARDS ABOVE-NORMAL PRECIPITATION OVER MUCH OF THE CONUS
IS SIMILAR TO THAT OF THE EARLIER 6-10 DAY PERIOD. A RELATIVELY SMALL AREA OF
DRIER-THAN-NORMAL CONDITIONS IS FAVORED ACROSS THE NORTHERN AND CENTRAL PACIFIC
COAST EXTENDING INLAND INTO ADJACENT PARTS OF THE GREAT BASIN. MUCH OF ALASKA
IS SLIGHTLY FAVORED TO RECEIVE ABOVE-NORMAL PRECIPITATION, IN CONCERT WITH MUCH
OF THE PRECIPITATION GUIDANCE. ABOVE-NORMAL PRECIPITATION IS ALSO FAVORED FOR
THE HAWAIIAN ISLANDS, BASED ON THE ERFCON AND AUTOMATED PRECIPITATION FORECASTS.
THE OFFICIAL 8-14 DAY 500-HPA HEIGHT BLEND CONSISTS OF: 25% OF TODAY'S 0Z GFS
ENSEMBLE MEAN CENTERED ON DAY 11, 50% OF TODAY'S 0Z EUROPEAN ENSEMBLE MEAN
CENTERED ON DAY 11, AND 25% OF TODAY'S 0Z CANADIAN ENSEMBLE MEAN CENTERED ON
DAY 11
FORECAST CONFIDENCE FOR THE 8-14 DAY PERIOD: NEAR-AVERAGE, 3 ON A SCALE OF 1-5,
DUE TO AN OVERALL INCREASE OF UNCERTAINTY REGARDING THE MID-LEVEL HEIGHT
PATTERN, TEMPERATURE, AND PRECIPITATION TOOLS DURING WEEK-2.
FORECASTER: ANTHONY A
NOTES:
THE NOTATION FOR THE CATEGORICAL FORECAST INDICATED ON THE MAPS IS
THE SAME AS THAT IN THE TABLES: A-ABOVE N-NEAR NORMAL B-BELOW
THE TEMPERATURE MAP SHOWS REGIONS WITH > 33% CHANCE OF BEING WARMER
(ORANGE, "A"), COLDER (BLUE, "B"), OR CLOSE TO (GRAY, "N") NORMAL.
LABELS ON THE SHADED LINES GIVE THE PROBABILITY (> 33%) OF THE MORE
LIKELY CATEGORY (B OR A). PROBABILITY OF N IS ALWAYS < 40%.
THE PRECIPITATION MAP SHOWS REGIONS WITH > 33% CHANCE OF BEING
WETTER (GREEN, "A"), DRIER (TAN, "B"), OR CLOSE TO (GRAY, "N")
NORMAL. LABELS ON THE SHADED LINES GIVE THE PROBABILITY (> 33%) OF
THE MORE LIKELY CATEGORY (B OR A). PROBABILITY OF N IS ALWAYS < 40%.
IN THE SOUTHWEST AND OTHER CLIMATOLOGICALLY DRY REGIONS - THERE WILL
BE A GREATER THAN 33.3% CHANCE OF NO PRECIPITATION AND OCCASIONALLY
EVEN A NORMAL (I.E. MEDIAN) VALUE OF ZERO - ESPECIALLY DURING THE DRY
SEASONS. IN SUCH CASES A FORECAST OF NEAR NORMAL IS EFFECTIVELY A
FORECAST OF LITTLE OR NO PRECIPITATION.
THE CLIMATE PREDICTION CENTER USES 1991-2020 BASE PERIOD MEANS AS
REFERENCE IN THE CLIMATE OUTLOOKS.
THE NEXT SET OF LONG-LEAD MONTHLY AND SEASONAL OUTLOOKS WILL BE RELEASED ON
JUNE 18.
ANALOGS TO THE 5 DAY MEAN OBSERVED PATTERN CENTERED 3 DAYS AGO (D-3)
FOR THE REGION FROM 20N TO 70N LATITUDE AND 175E TO 60W LONGITUDE
INCLUDE THE 5 DAY PERIODS CENTERED ON THE FOLLOWING DATES:
19910604 - 20170604 - 20250526 - 20230605 - 20140524
ANALOGS TO THE 7 DAY MEAN OBSERVED PATTERN CENTERED 4 DAYS AGO (D-4)
FOR THE REGION FROM 20N TO 70N LATITUDE AND 175E TO 60W LONGITUDE
INCLUDE THE 7 DAY PERIODS CENTERED ON THE FOLLOWING DATES:
19910604 - 20230604 - 20250525 - 20230512 - 20170604
6-10 DAY OUTLOOK TABLE
OUTLOOK FOR JUN 08 - 12 2026
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON N A OREGON N A NRN CALIF N N
SRN CALIF A N IDAHO A A NEVADA A N
W MONTANA A A E MONTANA A A WYOMING A A
UTAH A A ARIZONA A N COLORADO A A
NEW MEXICO A A N DAKOTA A A S DAKOTA A A
NEBRASKA A A KANSAS A A OKLAHOMA A A
N TEXAS N A S TEXAS N A W TEXAS A A
MINNESOTA A A IOWA A A MISSOURI A A
ARKANSAS A A LOUISIANA N A WISCONSIN A N
ILLINOIS A A MISSISSIPPI N A MICHIGAN A B
INDIANA A N OHIO A N KENTUCKY A A
TENNESSEE A A ALABAMA N A NEW YORK A B
VERMONT A B NEW HAMP A B MAINE A B
MASS A B CONN A N RHODE IS A N
PENN A N NEW JERSEY A N W VIRGINIA A N
MARYLAND A N DELAWARE A N VIRGINIA A N
N CAROLINA N A S CAROLINA N A GEORGIA N A
FL PNHDL N A FL PENIN A A AK N SLOPE B A
AK ALEUTIAN B N AK WESTERN B A AK INT BSN B A
AK S INT B A AK SO COAST B A AK PNHDL N A
8-14 DAY OUTLOOK TABLE
OUTLOOK FOR JUN 10 - 16 2026
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON A N OREGON A B NRN CALIF A B
SRN CALIF A N IDAHO A N NEVADA A N
W MONTANA A A E MONTANA A A WYOMING A A
UTAH A N ARIZONA A N COLORADO A A
NEW MEXICO A A N DAKOTA A A S DAKOTA A A
NEBRASKA A A KANSAS A A OKLAHOMA A A
N TEXAS N A S TEXAS N A W TEXAS A A
MINNESOTA A A IOWA A A MISSOURI A A
ARKANSAS N A LOUISIANA N A WISCONSIN A A
ILLINOIS A N MISSISSIPPI N A MICHIGAN A N
INDIANA A N OHIO A N KENTUCKY A A
TENNESSEE A A ALABAMA N A NEW YORK A N
VERMONT A N NEW HAMP A N MAINE A N
MASS A N CONN A N RHODE IS A N
PENN A N NEW JERSEY A N W VIRGINIA A A
MARYLAND A N DELAWARE A N VIRGINIA A A
N CAROLINA N A S CAROLINA N A GEORGIA N A
FL PNHDL N A FL PENIN A A AK N SLOPE B A
AK ALEUTIAN B N AK WESTERN B N AK INT BSN B A
AK S INT B A AK SO COAST N A AK PNHDL N A
LEGEND
TEMPS WITH RESPECT TO NORMAL PCPN WITH RESPECT TO MEDIAN
A - ABOVE N - NEAR NORMAL A - ABOVE N - NEAR MEDIAN
B - BELOW B - BELOW
THE FORECAST CLASSES REPRESENT AVERAGES FOR EACH STATE. NORMAL
VALUES - WHICH MAY VARY WIDELY ACROSS SOME STATES - ARE
AVAILABLE FROM YOUR LOCAL WEATHER SERVICE FORECAST OFFICE.
FOR ADDITIONAL INFORMATION SEE MESSAGE FXUS06 KWBC - ON AWIPS AS
PMDMRD.
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