Alert archive / Alaska / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 7, NWS Fairbanks, AK

August 5, 2005

NWS Fairbanks, AK issued this severe thunderstorm warning at Aug 5, 2005, 2:18 PM AKDT. It took effect at Aug 5, 2005, 7:18 PM AKDT. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 5, 2005, 2:18 PM AKDT (22:18 UTC)
In effect from
Aug 5, 2005, 7:18 PM AKDT
Expired
Aug 5, 2005, 7:45 PM AKDT
In force
27 min
Issued by
NWS Fairbanks, AK
Area
Counties, with a storm outline in the text

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Fairbanks, (PFAI), launched 12:00Z, 10.3 hours before the alert went out and 53 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Fairbanks, at 12:00Z on 2005-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fairbanks, at 12:00Z on 2005-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
57 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WUAK59 PAFG 060319
SVRAFG
AKZ222-060345-
/O.NEW.PAFG.SV.W.0007.050806T0318Z-050806T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FAIRBANKS AK
718 PM ADT FRI AUG 5 2005

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MIDDLE TANANA VALLEY AREA OF ALASKA
  THIS INCLUDES THE CITY OF TWO RIVERS

* UNTIL 745 PM ADT

* AT 713 PM ADT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 6 MILES SOUTH OF TWO
  RIVERS...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES SOUTH OF GRANITE TORS CAMPGROUND BY 745 PM ADT

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 6488 14701 6470 14702 6467 14622 6499 14619

$$

RJ AUG 05

What forecasters said that day

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

NWS Fairbanks, AK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 9:30 AM AKDT, 4 hours 48 minutes earlier.

Area forecast discussion, Aug 5, 9:30 AM AKDT, 4 hours 48 minutes before
NORTH ALASKA FORECAST DISCUSSION
230 PM ADT FRI AUG 5 2005

.DISCUSSION...SOUTHWEST FLOW ALOFT IS ALLOWING A SERIES
OF WEATHER FRONTS TO MOVE ACROSS WESTERN ALASKA AND
THE ARCTIC COAST BRINGING WINDS AND RAIN. ONE WEATHER FRONT
FROM POINT LAY SOUTH WILL MOVE NORTHEAST TONIGHT BRINGING
LIGHT RAIN WITH IT.

A SECOND MUCH STRONGER COLD FRONT NOW IN THE CENTRAL BERING
SEA WILL MOVE ALONG THE WEST COAST OF ALASKA SATURDAY AND
TO THE CENTRAL ARCTIC COAST ON SUNDAY. A WARM FRONT AHEAD
OF THIS NOW OVER THE BERING STRAIT WILL MOVE TO THE WESTERN
ARCTIC COAST SATURDAY. SIGNIFICANT RAIN WILL SPREAD NORTHEAST
WITH THE WARM FRONT ALONG WITH SOUTH WINDS 20 TO 30 KTS.

WITH THE COLD FRONT...WINDS WILL INCREASE TO 30-40KT TONIGHT
AND SPREAD EAST JUST AHEAD OF THE FRONT. THIS WILL CAUSE HEAVY
SURF ALONG THE COAST TONIGHT OF ZONE 213 AND SPREAD TO THE COASTS
OF 211 SATURDAY AND 207 NORTH OF CAPE KRUSENSTERN SATURDAY
AFTERNOON. WE ARE PUTTING OUT HEAVY SURF ADVISORIES FOR THOSE
AREAS. DUE TO THE LACK OF COLD ADVECTION AND BORDERLINE WIND
SPEEDS WE DO NOT THINK COASTAL FLOODING WILL OCCUR, BUT WE
WILL CONTINUE TO MONITOR THE AREA FROM NOME WEST FOR ANY
POTENTIAL COASTAL FLOODING SINCE THIS IS THE AREA WITH THE
LONGEST FETCH LENGTH. RAIN WILL ACCOMPANY THE COLD
FRONT AS WELL.

A RIDGE ALOFT OVER SOUTHERN ALASKA WILL BUILD STRONGLY
OVER NORTHERN ALASKA MONDAY AND PERSIST THROUGH NEXT WEEK.
THIS WILL CAUSE A RETURN OF HOT AND DRY WEATHER TO MOST
OF NORTHERN ALASKA EXCEPT THE ARCTIC COAST FOR NEXT WEEK.

.HYDRO...NONE.
.FIRE WEATHER...NONE.

.AFG WATCH/WARNING/ADVISORIES...
PUBLIC...HIGH WIND WATCH 201 SATURDAY
         HIGH SURF ADVISORY 207 NORTH OF KRUSENSTERN SAT AND SUN.
         HIGH SURF ADVISORY 211 SAT AND SUN.
         HIGH SURF ADVISORY 213 TONIGHT THROUGH SUN.

MARINE...SCA 200..SCA 215..SCA 230
         GALE 210..GALE 220..GALE 225

JB AUG 05

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 11:53 PM AKDTHigh Wind WatchAFG53 hr
Aug 5, 9:22 AM AKDTGale WarningAFG4 days
Aug 5, 9:22 AM AKDTSmall Craft AdvisoryAFG5 days
Aug 5, 9:34 AM AKDTGale WarningAFG48 hr
Aug 5, 9:34 AM AKDTSmall Craft AdvisoryAFG4 days

Nearby

Severe Thunderstorm Warnings in Alaska, 2005Every severe thunderstorm warning in 2005

Sources

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