626
FXUS06 KWBC 251902
PMDMRD
PROGNOSTIC DISCUSSION FOR 6 TO 10 AND 8 TO 14 DAY OUTLOOKS
NWS CLIMATE PREDICTION CENTER COLLEGE PARK, MD
300 PM EDT SAT OCTOBER 25 2025
6-10 DAY OUTLOOK FOR OCT 31 - NOV 04, 2025
THE ECMWF, GEFS, AND CANADIAN ENSEMBLE MODELS BROADLY AGREE ON AN AMPLIFIED
500-HPA HEIGHT PATTERN OVER NORTH AMERICA AND SURROUNDING REGIONS DURING THE
610 DAY PERIOD, WITH ONLY MINOR VARIATIONS AMONG THE MODELS IN THE AMPLITUDE
AND PHASE OF PREDICTED WAVE FEATURES. THE MANUAL HEIGHT BLEND IS BASED ON
ENSEMBLE MEANS, WEIGHTING THE ECMWF MODEL MORE HEAVILY DUE TO ITS RECENT
ANOMALY CORRELATION SKILL. THE MANUAL BLEND INDICATES AN AMPLIFIED TROUGH WITH
BELOW-NORMAL MEAN 500-HPA HEIGHTS OVER ALASKA, EXTENDING SOUTHEASTWARD TO THE
GULF OF ALASKA AND THE NORTH PACIFIC. ANOTHER BROAD TROUGH WITH NEGATIVE
500-HPA HEIGHT ANOMALIES IS FORECAST OVER THE EASTERN CONTIGUOUS U.S. (CONUS),
WHILE ANOMALOUS RIDGING AND ABOVE-NORMAL 500-HPA HEIGHTS ARE FORECAST OVER THE
WESTERN CONUS. NEAR-NORMAL 500-HPA HEIGHTS ARE PREDICTED IN THE VICINITY OF
HAWAII.
BELOW-NORMAL TEMPERATURES ARE FAVORED ACROSS WESTERN MAINLAND ALASKA AND THE
EASTERN ALEUTIANS, UNDER A PREDICTED TROUGH. ABOVE-NORMAL TEMPERATURES ARE
LIKELY ACROSS MOST OF THE WESTERN AND CENTRAL CONUS, THE UPPER MISSISSIPPI
VALLEY, PARTS OF THE MIDDLE MISSISSIPPI VALLEY, AND THE UPPER GREAT LAKES,
UNDER THE PREDICTED RIDGE, SUPPORTED BY MOST OF THE DYNAMICAL TEMPERATURE
FORECAST TOOLS. ABOVE-NORMAL TEMPERATURES ARE ALSO FAVORED FOR MAINE,
INFLUENCED BY THE RIDGE OVER CANADA DURING THE FORECAST PERIOD. NEAR- TO
BELOW-NORMAL TEMPERATURES ARE FAVORED OVER MUCH OF THE REMAINDER OF THE EASTERN
CONUS, INCLUDING THE LOWER MISSISSIPPI VALLEY, THE SOUTHEAST, AND THE
MID-ATLANTIC, UNDER THE PREDICTED TROUGH. ABOVE-NORMAL TEMPERATURES ARE LIKELY
ACROSS HAWAII IN THE 6-10 DAY PERIOD, CONSISTENT WITH THE TEMPERATURE
CONSOLIDATION.
BELOW-NORMAL PRECIPITATION IS FAVORED FOR PARTS OF WESTERN MAINLAND ALASKA,
CONSISTENT WITH CALIBRATED PRECIPITATION FORECASTS. ABOVE-NORMAL PRECIPITATION
IS FAVORED FOR EASTERN MAINLAND ALASKA AND SOUTHEAST ALASKA, WHERE DYNAMICAL
MODEL FORECASTS ARE IN GOOD AGREEMENT. ABOVE-NORMAL PRECIPITATION IS FAVORED
FOR THE NORTHWESTERN CONUS AHEAD OF AN AMPLIFIED TROUGH OVER THE NORTH PACIFIC.
ABOVE-NORMAL PRECIPITATION IS ALSO FAVORED FOR THE NORTHEASTERN CONUS, AHEAD OF
A TROUGH DURING THE PERIOD. NEAR- TO BELOW-NORMAL PRECIPITATION IS FAVORED FOR
THE REMAINDER OF THE CONUS, CONSISTENT WITH MOST OF THE DYNAMIC PRECIPITATION
FORECAST TOOLS. ABOVE-NORMAL PRECIPITATION IS SLIGHTLY FAVORED ACROSS HAWAII,
CONSISTENT WITH THE PRECIPITATION CONSOLIDATION.
THE OFFICIAL 6-10 DAY 500-HPA HEIGHT BLEND CONSISTS OF 30% OF TODAY'S 6Z 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 OUT OF 5), DUE TO
GOOD AGREEMENT AMONG ENSEMBLE MODEL FORECASTS, OFFSET BY SOME DIFFERENCES AMONG
TEMPERATURE AND PRECIPITATION FORECAST TOOLS FOR CERTAIN AREAS.
8-14 DAY OUTLOOK FOR NOV 02 - 08 2025
ENSEMBLE MEAN SOLUTIONS FOR THE 8-14 DAY PERIOD PREDICT A FAIRLY CONSISTENT
500-HPA CIRCULATION PATTERN RELATIVE TO THE 6-10 DAY PERIOD ACROSS NORTH
AMERICA AND THE SURROUNDING REGIONS, WHILE THE OVERALL PATTERN EVOLVES AND
DEAMPLIFIES LATER IN THE FORECAST PERIOD. IN THE MANUAL BLEND OF MODEL
FORECASTS, A TROUGH AND NEGATIVE 500-HPA ANOMALIES PERSIST OVER MAINLAND ALASKA
AND THE GULF OF ALASKA. ANOMALOUS RIDGING AND ABOVE NORMAL 500-HPA HEIGHTS ARE
FORECAST OVER MOST OF THE WESTERN AND CENTRAL CONUS, WHILE A TROUGH IS FORECAST
OVER THE EASTERN CONUS IN WEEK 2. NEAR-NORMAL 500-HPA HEIGHTS ARE PREDICTED
ACROSS HAWAII.
BELOW-NORMAL TEMPERATURES CONTINUE TO BE FAVORED FOR WESTERN MAINLAND ALASKA,
WHILE ABOVE-NORMAL TEMPERATURES ARE FAVORED FOR EASTERN MAINLAND ALASKA AND
SOUTHEAST ALASKA, CONSISTENT WITH CALIBRATED MODEL TEMPERATURE FORECASTS.
ENHANCED PROBABILITIES FOR ABOVE-NORMAL TEMPERATURES ARE INDICATED FOR THE
WESTERN AND CENTRAL CONUS, UNDER THE PREDICTED RIDGE. NEAR- TO BELOW-NORMAL
TEMPERATURES ARE FAVORED FOR THE MOST OF THE EASTERN CONUS, UNDER THE TROUGH,
SUPPORTED BY MOST OF THE DYNAMICAL TEMPERATURE FORECAST TOOLS. ABOVE-NORMAL
TEMPERATURES ARE LIKELY ACROSS HAWAII IN THE 8-14 DAY PERIOD, CONSISTENT WITH
THE TEMPERATURE CONSOLIDATION.
THE PRECIPITATION FORECAST FOR ALASKA FOR THE 8-14 DAY PERIOD CONTINUES TO
FAVOR NEAR- TO ABOVE-NORMAL PRECIPITATION FOR EASTERN AND CENTRAL MAINLAND
ALASKA, AS WELL AS SOUTHEAST ALASKA, UNDER A PERSISTENT MID-LEVEL TROUGH.
BELOW-NORMAL PRECIPITATION ARE FORECAST OVER PARTS OF WESTERN MAINLAND ALASKA,
CONSISTENT WITH ERF CONSOLIDATION AND OPERATIONAL AUTOBLEND PRECIPITATION
TOOLS. ABOVE-NORMAL PRECIPITATION CONTINUES TO BE FAVORED FOR PORTIONS OF THE
NORTHWESTERN CONUS, AHEAD OF THE TROUGH OVER THE NORTH PACIFIC. NEAR- TO
BELOW-NORMAL PRECIPITATION IS FORECAST OVER THE REMAINDER OF THE CONUS,
SUPPORTED BY MOST OF THE PRECIPITATION FORECAST TOOLS. NEAR- TO ABOVE-NORMAL
PRECIPITATION CONTINUES TO BE FAVORED FOR HAWAII, CONSISTENT WITH THE
PRECIPITATION CONSOLIDATION.
THE OFFICIAL 8-14 DAY 500-HPA HEIGHT BLEND CONSISTS OF: 30% OF TODAY'S 6Z GFS
ENSEMBLE MEAN CENTERED ON DAY 11, 40% OF TODAY'S 0Z EUROPEAN ENSEMBLE MEAN
CENTERED ON DAY 11, AND 30% OF TODAY'S 0Z CANADIAN ENSEMBLE MEAN CENTERED ON
DAY 11
FORECAST CONFIDENCE FOR THE 8-14 DAY PERIOD: NEAR AVERAGE (3 OUT OF 5), ABOUT
AVERAGE, 3 OUT OF 5, DUE TO MOSTLY GOOD AGREEMENT AMONG THE TEMPERATURE AND
PRECIPITATION TOOLS, OFFSET BY INCREASING UNCERTAINTY LATER IN THE PERIOD.
FORECASTER: LUKE H
THE NEXT SET OF LONG-LEAD MONTHLY AND SEASONAL OUTLOOKS WILL BE RELEASED ON
NOVEMBER 20.
6-10 DAY OUTLOOK TABLE
OUTLOOK FOR OCT 31 - NOV 04, 2025
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON A A OREGON A A NRN CALIF A N
SRN CALIF A N IDAHO A A NEVADA A B
W MONTANA A A E MONTANA A N WYOMING A B
UTAH A B ARIZONA A B COLORADO A B
NEW MEXICO A B N DAKOTA A B S DAKOTA A B
NEBRASKA A B KANSAS A B OKLAHOMA A B
N TEXAS A B S TEXAS A B W TEXAS A B
MINNESOTA A B IOWA A B MISSOURI N B
ARKANSAS N B LOUISIANA B B WISCONSIN A B
ILLINOIS N B MISSISSIPPI B B MICHIGAN A N
INDIANA N B OHIO B N KENTUCKY B B
TENNESSEE B B ALABAMA B B NEW YORK N A
VERMONT N A NEW HAMP N A MAINE A A
MASS N A CONN N A RHODE IS N A
PENN N A NEW JERSEY N A W VIRGINIA B N
MARYLAND B A DELAWARE B A VIRGINIA B A
N CAROLINA B N S CAROLINA B B GEORGIA B B
FL PNHDL B B FL PENIN B B 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 B A AK PNHDL N A
8-14 DAY OUTLOOK TABLE
OUTLOOK FOR NOV 02 - 08 2025
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON A A OREGON A N NRN CALIF A N
SRN CALIF A N IDAHO A N NEVADA A B
W MONTANA A A E MONTANA A N WYOMING A N
UTAH A B ARIZONA A B COLORADO A B
NEW MEXICO A B N DAKOTA A N S DAKOTA A B
NEBRASKA A B KANSAS A B OKLAHOMA A B
N TEXAS A B S TEXAS A B W TEXAS A B
MINNESOTA A N IOWA A B MISSOURI A B
ARKANSAS N B LOUISIANA N B WISCONSIN N B
ILLINOIS N B MISSISSIPPI B B MICHIGAN N N
INDIANA B B OHIO B N KENTUCKY B B
TENNESSEE B B ALABAMA B B NEW YORK B N
VERMONT B N NEW HAMP B N MAINE N N
MASS B N CONN B N RHODE IS B N
PENN B N NEW JERSEY B N W VIRGINIA B B
MARYLAND B B DELAWARE B B VIRGINIA B B
N CAROLINA B B S CAROLINA B B GEORGIA B B
FL PNHDL B B FL PENIN B B AK N SLOPE N N
AK ALEUTIAN B N AK WESTERN B N AK INT BSN N N
AK S INT A A AK SO COAST A A AK PNHDL A 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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