Alert archive / Alaska / Small Craft Advisories in 2013

Small Craft Advisory 312, NWS Anchorage, AK

April 9, 2013

NWS Anchorage, AK issued this small craft advisory at Apr 9, 2013, 4:00 AM AKDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Apr 9, 2013, 4:00 AM AKDT (12:00 UTC)
Expired: Apr 9, 2013, 4:00 PM AKDT
In force: 12 hr
Issued by: NWS Anchorage, AK

What forecasters said that day

The local office's own words before this small craft advisory 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 small craft advisory went out at Apr 8, 2:00 PM AKDT, 14 hours earlier.

Area forecast discussion, Apr 8, 2:00 PM AKDT, 14 hours before

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT MON APR 8 2013

.MODEL DISCUSSION...
NUMERICAL MODELS IN ONLY FAIR AGREEMENT TODAY. THE MAIN DIFFICULTIES
SEEM TO BE THE HANDLING OF SMALL SCALE FEATURES MERGING WITH THE
UPPER LOW OVER THE GULF OF ALASKA.

.ANALYSIS AND UPPER LEVELS...
THERE IS A LARGE UPPER LEVEL LOW CENTERED OVER WESTERN ALASKA. THERE
IS A RIDGE OVER THE WESTERN BERING SEA AND ANOTHER OVER INTERIOR
CANADA CENTERED JUST EAST OF THE ROCKIES. SOUTH CENTRAL ALASKA IS IN
STRONG SOUTHERLY FLOW ALOFT WHILE FROM THE WEST COAST OF ALASKA
THROUGH MUCH OF THE BERING SEA THE UPPER FLOW IS NORTHWESTERLY.

.SHORT TERM FORECAST...
THE UPPER LEVEL LOW OVER WESTERN ALASKA WILL SLOWLY DRIFT EAST
THROUGH THURSDAY. THE RIDGE OVER THE WESTERN BERING SEA WILL
BASICALLY REMAIN IN PLACE...BUT DRIFT EASTWARD AS WELL BY THURSDAY.

FOR SOUTH CENTRAL ALASKA...EXPECT SNOW TO CONTINUE INTO TUESDAY FOR
MOST AREAS EAST OF A LINE FROM ABOUT SKWENTNA TO SEWARD. THIS IS
ASSOCIATED WITH A LOW THAT WILL MOVE INTO PRINCE WILLIAM SOUND
TONIGHT AND THEN MOVE INLAND ON TUESDAY. SHOWERS ARE THEN POSSIBLE
OVER ALL OF SOUTH CENTRAL ALASKA LATE TUESDAY INTO THURSDAY AS THE
UPPER LOW MOVES OVER THE AREA. BY THURSDAY AFTERNOON THE LOW WILL BE
EAST OF ANCHORAGE AND SHOWERS SHOULD DIMINISH.

FOR SOUTHWEST ALASKA...CONTINUED DRY TONIGHT EXCEPT ALONG THE
IMMEDIATE COAST. THERE IS A CHANCE OF PRECIPITATION TUESDAY INTO
WEDNESDAY AS THE UPPER TROUGH MOVES THROUGH THE AREA...MAINLY IN THE
KUSKOKWIM VALLEY. LATER WEDNESDAY THROUGH THURSDAY THE FLOW IS STILL
SOMEWHAT CYCLONIC AND CANNOT RULE OUT A CHANCE OF PRECIPITATION.

FOR THE ALEUTIANS AND BERING SEA...LITTLE CHANGE IN THE WEATHER
OVER THE NEXT FEW DAYS WITH A PATTERN THAT IS ONLY SLOWLY MOVING
EASTWARD. ON THURSDAY MAY BECOME SOUTHERLY OVER THE WESTERN
ALEUTIANS AS A WEATHER FRONT APPROACHES.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE WARNING 120 130 150.
         HEAVY FREEZING SPRAY 130 132 136 137 138 150 155 160
                             165 179.
FIRE WEATHER...NONE.

LUDWIG APR 13

In the hours before

Local storm report, Apr 8, 10:24 PM AKDT, 5 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1024 PM AKDT MON APR 08 2013

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

1000 PM     SNOW             6 SW ANCHORAGE          61.16N 149.99W
04/08/2013  M3.9 INCH                           AK   OFFICIAL NWS OBS

            TOTAL ACCUMULATION TODAY AS OF 10 PM. 2.7 INCHES SINCE 4
            PM.

&&

CB

Local storm report, Apr 8, 10:39 PM AKDT, 5 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1039 PM AKDT MON APR 08 2013

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

1030 PM     SNOW             EAGLE RIVER             61.32N 149.57W
04/08/2013  M6.5 INCH                           AK   NWS EMPLOYEE

            TOTAL ACCUMULATION TODAY AS OF 1030 PM IN EAGLE RIVER
            VALLEY.

&&

CB

Local storm report, Apr 9, 3:23 AM AKDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
323 AM AKDT TUE APR 09 2013

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

0215 AM     SNOW             5 SSE ANCHORAGE         61.15N 149.80W
04/09/2013  M6.3 INCH                           AK   PUBLIC

            STORM TOTAL ACCUMULATION NEAR LORE RD AND ELMORE AS OF
            215 AM.

&&

CB

The office that day

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

Issued	Product	Office	Lasted
Apr 8, 4:00 PM AKDT	Gale Warning	AFC	12 hr
Apr 8, 4:00 PM AKDT	Small Craft Advisory	AFC	60 hr
Apr 8, 4:00 PM AKDT	Heavy Freezing Spray Warning	AFC	60 hr
Apr 9, 4:00 AM AKDT	Gale Warning	AFC	24 hr
Apr 9, 4:00 AM AKDT	Small Craft Advisory	AFC	5 days
Apr 9, 4:00 AM AKDT	Heavy Freezing Spray Warning	AFC	36 hr

Nearby

Small Craft Advisories in Alaska, 2013 Every small craft advisory in 2013

Sources

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