Alert archive / Alaska / Small Craft Advisories in 2013
Small Craft Advisory 673, NWS Anchorage, AK
NWS Anchorage, AK issued this small craft advisory at Sep 5, 2013, 5:45 PM AKDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Sep 5, 2013, 5:45 PM AKDT (01:45 UTC)
- Expired
- Sep 6, 2013, 4:00 AM AKDT
- In force
- 10 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 Sep 5, 2:00 PM AKDT, 3 hours 45 minutes earlier.
Area forecast discussion, Sep 5, 2:00 PM AKDT, 3 hours 45 minutes before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT THU SEP 5 2013
.ANALYSIS AND UPPER LEVELS...
THERE IS AN ELONGATED UPPER LEVEL LOW ALONG THE WEST COAST OF ALASKA
EXTENDING INTO THE NORTHERN PACIFIC. THERE IS A RIDGE OVER THE
WESTERN BERING SEA AND WESTERN ALEUTIANS AND ANOTHER UPPER LOW OVER
THE KAMCHATKA PENINSULA. A SYSTEM IS CURRENTLY SPINNING UP AT THE
SOUTHERN END OF THE ALASKA LOW ASSOCIATED WITH FAVORABLE DYNAMICS
FROM THE SUBTROPICAL JET. A SHORT-WAVE TROUGH ASSOCIATED WITH THE
ALASKAN LOW OF THE LOW IS SLIDING SOUTH THROUGH DUTCH HARBOR.
.MODEL DISCUSSION...
THE NUMERICAL GUIDANCE IS IN FAIRLY GOOD AGREEMENT TODAY. THERE ARE
SOME MINOR DIFFERENCES ON PRECIPITATION TIMING/AMOUNT AND ON HOW
FAST THE LOW MOVING INTO SOUTHERN ALASKA WEAKENS...BUT THESE ARE
RELATIVELY MINOR FOR A SYSTEM COMING IN FROM THE DATA SPARSE SOUTH.
THUS THE CONFIDENCE IN THE FORECASTS IS ABOVE NORMAL.
.SHORT TERM FORECAST...
FOR SOUTH CENTRAL AND SOUTHWEST ALASKA...THE DEVELOPING NORTH
PACIFIC LOW WILL MOVE NORTH AND RAPIDLY INTENSIFY TONIGHT. THE
INITIAL WARM FRONTAL PRECIPITATION WILL REACH KODIAK AROUND THE
MIDDLE TONIGHT AND THE NORTH GULF COAST LATE TONIGHT. THE COLD FRONT
WILL RACE NORTHEASTWARD ACROSS THE NORTHERN GULF FRIDAY
MORNING...CATCHING UP TO THE WARM FRONT AND CREATING A "BENT BACK"
OCCLUSION. THIS OCCLUDED FRONT WILL SWEEP THROUGH SOUTH CENTRAL
ALASKA AND THE EASTERN PORTION OF SOUTHWEST ALASKA DURING THE DAY
FRIDAY. THE UPPER LOW AND SURFACE LOW WILL BECOME VERTICALLY STACKED
AROUND NOON...CENTERED JUST SOUTH OF KODIAK ISLAND. AFTER THIS THE
SYSTEM WILL WEAKEN AS THE SURFACE LOW BEGINS TO TRAIL BEHIND THE
UPPER LOW. ON FRIDAY NIGHT THE LOW WILL MOVE INLAND AND BEGIN TO
FALL APART.
THE NEXT SYSTEM WILL FORM AS THE SHORT-WAVE NEAR DUTCH HARBOR MOVES
SOUTH INTO THE PACIFIC. IT WILL PHASE WITH A SYSTEM IN THE
SUBTROPICAL JET ON FRIDAY AND MOVE NORTH INTO THE NORTHERN GULF ON
SATURDAY. THIS SYSTEM WILL BE CONSIDERABLY WEAKER THAN THE PREVIOUS
ONE. IT WILL ALSO BE FURTHER EAST...WITH THE SURFACE LOW MOVING
ASHORE NEAR OR EAST OF CORDOVA SUNDAY MORNING.
FOR THE BERING SEA AND ALEUTIANS...THE KAMCHATKA LOW WILL MOVE EAST
TONIGHT. THE FRONTAL PRECIPITATION AND WINDS WILL REACH THE WESTERN
ALEUTIANS ON FRIDAY AND THE CENTRAL ALEUTIANS FRIDAY NIGHT. THE
WESTERN BERING RIDGE WILL PUSH EAST AND NORTH AHEAD OF THIS
SYSTEM...THEN "PINCH OFF" OVER THE BERING SEA ON SATURDAY AS THE
UPPER LOW SLIDES EASTWARD JUST SOUTH OF THE ALEUTIANS. ON SUNDAY THE
LOW WILL BE SOUTH OF THE EASTERN ALEUTIANS WITH AN OCCLUDED FRONT
ROUGHLY ALONG THE EASTERN ALEUTIANS AND ALASKA PENINSULA.
.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...STORM WARNING 150.
GALE WARNING 120 125 130 132 136 137 138 140 155 175 176.
FIRE WEATHER...NONE.
LUDWIG SEP 13In the hours before
Special weather statement, Sep 5, 12:20 PM AKDT, 5 hours 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANCHORAGE AK 1220 PM AKDT THU SEP 5 2013 AKZ181-052100- ...ASHFALL FROM VENIAMINOF IS NO LONGER EXPECTED... ASHFALL FROM VENIAMINOF IS NO LONGER EXPECTED TO REACH THE NEARBY COMMUNITIES. THIS IS THE LAST STATEMENT THAT WILL BE ISSUED FOR THIS EVENT.
Special weather statement, Sep 5, 4:45 PM AKDT, 1 hour before
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</html>The office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 4:00 PM AKDT | Gale Warning | AFC | 3 days | |
| Sep 5, 4:00 PM AKDT | Gale Warning | AFC | 48 hr | |
| Sep 5, 4:00 PM AKDT | Storm Warning | AFC | 24 hr | |
| Sep 5, 4:00 PM AKDT | Storm Warning | AFC | 24 hr | |
| Sep 5, 4:00 PM AKDT | Storm Warning | AFC | 24 hr | |
| Sep 5, 5:19 PM AKDT | Areal Flood Advisory | AFC | 47 hr | |
| Sep 6, 4:00 AM AKDT | Gale Warning | AFC | 24 hr | |
| Sep 6, 4:00 AM AKDT | Small Craft Advisory | AFC | 12 hr | |
| Sep 6, 4:00 AM AKDT | Small Craft Advisory | AFC | 12 hr | |
| Sep 6, 6:45 AM AKDT | Gale Warning | AFC | 9 hr | |
| Sep 6, 10:00 AM AKDT | Storm Warning | AFC | 6 hr |
Nearby
Small Craft Advisories in Alaska, 2013Every 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.