Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 255, NWS Twin Cities, MN

August 8, 2005Dakota County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 8, 2005, 4:19 AM CDT for Dakota County, Washington County, Minnesota. It was in force for 56 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 8, 2005, 4:19 AM CDT (09:19 UTC)
Expired
Aug 8, 2005, 5:15 AM CDT
In force
56 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Dakota County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 45 km from the middle of the area, began a volume at 09:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.3 hours before the alert went out and 48 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, Minneapolis, MN at 00:00Z on 2005-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3207 joules per kilogram.LCLLFCEL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 2005-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
3207 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
1389 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.9
Supercell composite
7.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 080920
SVRMPX
MNC037-163-081015-
/O.NEW.KMPX.SV.W.0255.050808T0919Z-050808T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
419 AM CDT MON AUG 8 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA
  DAKOTA COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 515 AM CDT

* AT 416 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS
  LOCATED NEAR SUNFISH...OR ABOUT 7 MILES SOUTH OF ST PAUL...AND
  MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEWPORT...
  ST PAUL PARK...
  COTTAGE GROVE...
  HASTINGS...
  AFTON...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4493 9310 4478 9316 4468 9283 4493 9277
      4489 9301

$$
1 follow-up statement
000 
WWUS53 KMPX 080952
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
451 AM CDT MON AUG 8 2005

MNC037-163-081015-
/O.CON.KMPX.SV.W.0255.000000T0000Z-050808T1015Z/
WASHINGTON MN-DAKOTA MN-
451 AM CDT MON AUG 8 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 515 AM CDT FOR
DAKOTA AND WASHINGTON COUNTIES...

AT 450 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE 
THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL. THESE STORMS WERE 
LOCATED ALONG A LINE EXTENDING FROM COTTAGE GROVE TO 
VERMILLION...AND MOVING SOUTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE ST PAUL PARK...ROSEMOUNT...
NEWPORT...NEW TRIER AND HASTINGS.

LAT...LON 4483 9305 4464 9313 4457 9288 4480 9280
      4489 9301

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 5:04 AM CDTSevere Thunderstorm WarningMPXCarver, Wright56 min
Aug 8, 5:50 AM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey56 min
Aug 8, 6:06 AM CDTSevere Thunderstorm WarningMPXNicollet19 min
Aug 8, 6:10 AM CDTSevere Thunderstorm WarningMPXWashington50 min
Aug 8, 6:31 AM CDTSevere Thunderstorm WarningMPXMcLeod, Renville39 min
Aug 8, 8:30 AM CDTSevere Thunderstorm WarningMPXMcLeod, Renville39 min
Aug 8, 5:54 PM CDTSevere Thunderstorm WarningMPXLac qui Parle66 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; radar from the NEXRAD Level II archive.