Alert archive / Alaska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 2, NWS Anchorage, AK

June 19, 2007

NWS Anchorage, AK issued this severe thunderstorm warning at Jun 19, 2007, 2:30 PM AKDT. It took effect at Jun 19, 2007, 7:30 PM AKDT. It was in force for 30 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
Jun 19, 2007, 2:30 PM AKDT (22:30 UTC)
In effect from
Jun 19, 2007, 7:30 PM AKDT
Expired
Jun 19, 2007, 8:00 PM AKDT
In force
30 min
Issued by
NWS Anchorage, AK
Area
Counties, with a storm outline in the text

The nearest sounding before it

Anchorage Iap/Pt. Campbe, (PANC), launched 12:00Z, 10.5 hours before the alert went out and 80 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, Anchorage Iap/Pt. Campbe, at 12:00Z on 2007-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Anchorage Iap/Pt. Campbe, at 12:00Z on 2007-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
120 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
WUAK58 PAFC 200334
SVRAFC
AKZ111-145-200400-
/O.NEW.PAFC.SV.W.0002.070620T0330Z-070620T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ANCHORAGE AK
730 PM ADT TUE JUN 19 2007

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MATANUSKA VALLEY AREA OF ALASKA...
  SUSITNA VALLEY AREA OF ALASKA...

* UNTIL 800 PM ADT

* AT 727 PM ADT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED OVER SUSITNA VALLEY...
  OR ABOUT 5 MILES NORTH OF THE WILLOW FISHOOK ROAD...AND MOVING     
  SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  THE WILLOW FISHOOK ROAD BY 745 PM ADT AND CROSS IT BY 800 PM ADT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 6180 14913 6197 14923 6191 14988 6169 14974

$$

JN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 2:50 AM AKDTRed Flag WarningAFC66 hr
Jun 19, 11:00 AM AKDTSmall Craft AdvisoryAFC60 hr
Jun 19, 11:00 AM AKDTSmall Craft AdvisoryAFC60 hr
Jun 19, 11:59 AM AKDTFire Weather WatchAFC19 hr
Jun 19, 2:57 PM AKDTSevere Thunderstorm WarningAFC5 hr

Nearby

Severe Thunderstorm Warnings in Alaska, 2007Every severe thunderstorm warning in 2007

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.