Alert archive / Alaska / Heavy Freezing Spray Warnings in 2011

Heavy Freezing Spray Warning 77, NWS Anchorage, AK

February 27, 2011

NWS Anchorage, AK issued this heavy freezing spray warning at Feb 27, 2011, 4:00 AM AKST. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 27, 2011, 4:00 AM AKST (13:00 UTC)
Expired: Feb 27, 2011, 4:00 PM AKST
In force: 12 hr
Issued by: NWS Anchorage, AK

What forecasters said that day

The local office's own words before this heavy freezing spray warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this heavy freezing spray warning went out at Feb 26, 5:00 PM AKST, 11 hours earlier.

Area forecast discussion, Feb 26, 5:00 PM AKST, 11 hours before

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 PM AKST SAT FEB 26 2011

.MODEL DISCUSSION...MODELS IN PRETTY GOOD AGREEMENT. I USED THE NAM
FOR THE CHANNELED AND GAP WIND STUFF SINCE IT HAS THE BEST TERRAIN
DIPICTION. HOWEVER, FOR THE LONG RANGE - ITS GFS ALL THE WAY.

.ANALYSIS AND UPPER LEVELS...STABLE PATTERN TAKING HOLD. BUILDING RIDGE
ALONG 165-170W TO STAY PUT FOR THE NEXT 5 DAYS. ALL AREAS TO THE EAST OF
THOSE LONGITUDES WILL BE COLD AND DRY UNDER NORTHERLY FLOW ALOFT.

.SHORT TERM FORECAST...
IN THE WEST...MORE RAIN...EXCEPT FOR SNOW OVER SHEMYA...ALONG WITH GALE
AND STORM FORCE WINDS WILL MOVE ACROSS THE REGION TONIGHT AND WED WITH
THE MAIN LOW. AS THE ASSOCIATED COLD FRONT MOVES EAST...COLD AIR WILL
RAPIDLY SWEEP ACROSS THE BERING...BRINGING WIDESPREAD SNOW SHOWERS WED
NIGHT THROUGH THU NIGHT. HIGH PRESSURE THEN BRINGS DRYING ON FRI.

FOR SOUTHWEST AK...DRY CONDITIONS BENEATH HIGH PRESSURE WILL BE
INTERRUPTED WED AS AN UPPER WAVE BRINGS SOME SNOW SHOWERS TO THE
KUSKOKWIM DELTA. DRY CONDITIONS THEN RETURN UNTIL THE COLD FRONT
ARRIVES THU WITH SNOW LASTING THROUGH FRI.

SOUTH AND EAST OF THE AK RANGE...THE UPPER WAVE WILL INDUCE STRONG
WINDS IN WHITTIER TODAY...AND BLIZZARD CONDITIONS IN THOMPSON PASS AS
STRONG WINDS PICK UP RECENTLY DEPOSITED SNOW. THE WAVE MOVES THROUGH
QUICKLY AND WINDS DIMINISH THIS EVENING. HIGH PRESSURE THEN KEEPS THE
AREA COLD AND DRY UNTIL FRI WHEN THE BERING FRONT PUSHES ACROSS THE
RANGES AND BRINGS SNOW.

.LONG TERM FORECAST...
THE WEST WILL BE DRY SAT BEFORE ANOTHER SYSTEM BRINGS SNOW SAT NIGHT
INTO SUN WITH SNOW SHOWERS EARLY NEXT WEEK. SOUTHWEST AK WILL HAVE
DRYING THROUGH EARLY NEXT WEEK...WHILE SOUTHEAST OF THE AK RANGE WILL
HAVE COASTAL RAIN AND SNOW SHOWERS WITH DRYING INLAND.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HIGH WIND WARNING 131, 135.
MARINE...STORMS 175 176
GALES 120 126 127 129 130 155 165 170 172 179 180 185
HEAVY FREEZING SPRAY 121 126 127 129 130 140
FIRE WEATHER...NONE

FEB 11

In the hours before

Local storm report, Feb 26, 11:29 PM AKST, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1129 PM AKST SAT FEB 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0451 PM     NON-TSTM WND GST VALDEZ                  61.08N 146.30W
02/26/2011  M77.00 MPH                          AK   OFFICIAL NWS OBS

            MEASURED AT THE AIRPORT TOWER

0630 PM     NON-TSTM WND GST 10 WSW VALDEZ           61.03N 146.58W
02/26/2011  M76.00 MPH                          AK   BUOY

            MEASURED AT THE MIDDLE ROCK CMAN STATION

0720 PM     NON-TSTM WND DMG THOMPSON PASS           61.14N 145.75W
02/26/2011                                      AK   DEPT OF HIGHWAYS

            AT LEAST FIVE CARS STUCK IN WINDBLOWN SNOWDRIFTS IN THE
            PASS...INCLUDING A DOUBLE FUEL TANKER. WINDSHEILD WIPERS
            RIPPED FROM AT LEAST TWO DOT TRUCKS BY THE WINDS.

0720 PM     NON-TSTM WND GST THOMPSON PASS           61.14N 145.75W
02/26/2011  E100 MPH                            AK   DEPT OF HIGHWAYS

            WINDS OF AT LEAST 100 MPH ESTIMATED BY A FOREMAN IN THE
            PASS. FOREMAN ALSO REPORTED THAT IT WAS IMPOSSIBLE TO
            STAND IN THE PASS DUE TO THE WIND. RWIS SITE READINGS
            ONLY SOMEWHAT RELIABLE DUE TO THE BLOWING SNOW.

0800 PM     NON-TSTM WND GST 13 WSW VALDEZ           61.01N 146.66W
02/26/2011  M81.00 MPH                          AK   MESONET

            MEASURED AT THE POTATO POINT CMAN STATION

0800 PM     NON-TSTM WND DMG VALDEZ                  61.08N 146.30W
02/26/2011                                      AK   PUBLIC

            AT LEAST ONE CAR WINDOW SMASHED BY THE WIND AND SIDING
            TORN FROM A HOUSE.

0900 PM     NON-TSTM WND GST VALDEZ                  61.08N 146.30W
02/26/2011  M87.00 MPH                          AK   MESONET

            MEASURED AT THE VALDEZ BOAT HARBOR

0900 PM     NON-TSTM WND GST 3 S VALDEZ              61.04N 146.30W
02/26/2011  M95.00 MPH                          AK   MESONET

            MEASURED AT THE ALYESKA TERMINAL. WIND GUST OF 91 MPH
            ALSO REPORTED AT 630PM.

&&

KS

Local storm report, Feb 26, 11:29 PM AKST, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1129 PM AKST SAT FEB 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0451 PM     NON-TSTM WND GST                VALDEZ   61.08N 146.30W
02/26/2011  M77.00 MPH                          AK   OFFICIAL NWS OBS

            MEASURED AT THE AIRPORT TOWER

0630 PM     NON-TSTM WND GST         10 WSW VALDEZ   61.03N 146.58W
02/26/2011  M76.00 MPH                          AK   BUOY

            MEASURED AT THE MIDDLE ROCK CMAN STATION

0720 PM     NON-TSTM WND DMG         THOMPSON PASS   61.14N 145.75W
02/26/2011                                      AK   DEPT OF HIGHWAYS

            AT LEAST FIVE CARS STUCK IN WINDBLOWN SNOWDRIFTS IN THE
            PASS...INCLUDING A DOUBLE FUEL TANKER. WINDSHEILD WIPERS
            RIPPED FROM AT LEAST TWO DOT TRUCKS BY THE WINDS.

0720 PM     NON-TSTM WND GST         THOMPSON PASS   61.14N 145.75W
02/26/2011  E100 MPH                            AK   DEPT OF HIGHWAYS

            WINDS OF AT LEAST 100 MPH ESTIMATED BY A FOREMAN IN THE
            PASS. FOREMAN ALSO REPORTED THAT IT WAS IMPOSSIBLE TO
            STAND IN THE PASS DUE TO THE WIND. RWIS SITE READINGS
            ONLY SOMEWHAT RELIABLE DUE TO THE BLOWING SNOW.

0800 PM     NON-TSTM WND GST         13 WSW VALDEZ   61.01N 146.66W
02/26/2011  M81.00 MPH                          AK   MESONET

            MEASURED AT THE POTATO POINT CMAN STATION

0800 PM     NON-TSTM WND DMG                VALDEZ   61.08N 146.30W
02/26/2011                                      AK   PUBLIC

            AT LEAST ONE CAR WINDOW SMASHED BY THE WIND AND SIDING
            TORN FROM A HOUSE.

0900 PM     NON-TSTM WND GST                VALDEZ   61.08N 146.30W
02/26/2011  M87.00 MPH                          AK   MESONET

            MEASURED AT THE VALDEZ BOAT HARBOR

0900 PM     NON-TSTM WND GST            3 S VALDEZ   61.04N 146.30W
02/26/2011  M95.00 MPH                          AK   MESONET

            MEASURED AT THE ALYESKA TERMINAL. WIND GUST OF 91 MPH
            ALSO REPORTED AT 630PM.

&&

KS

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

Issued	Product	Office	Lasted
Feb 26, 4:00 PM AKST	Gale Warning	AFC	36 hr
Feb 26, 4:00 PM AKST	Small Craft Advisory	AFC	12 hr
Feb 26, 4:20 PM AKST	Blizzard Warning	AFC	24 hr
Feb 27, 4:00 AM AKST	Gale Warning	AFC	36 hr
Feb 27, 4:00 AM AKST	Small Craft Advisory	AFC	3 days
Feb 27, 4:00 AM AKST	Small Craft Advisory	AFC	24 hr

Nearby

Heavy Freezing Spray Warnings in Alaska, 2011 Every heavy freezing spray warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.