Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 33, NWS Twin Cities, MN

May 23, 2007Dakota County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 23, 2007, 3:18 PM CDT for Dakota County, Minnesota. It was in force for 42 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: May 23, 2007, 3:18 PM CDT (20:18 UTC)
Expired: May 23, 2007, 4:00 PM CDT
In force: 42 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Dakota County, MN

The radar

The Minneapolis radar (KMPX), 35 km from the middle of the area, began a volume at 20:19 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 37 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 84 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 164 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 
WUUS53 KMPX 232018
SVRMPX
MNC037-232100-
/O.NEW.KMPX.SV.W.0033.070523T2018Z-070523T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
318 PM CDT WED MAY 23 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 400 PM CDT

* AT 315 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...   
  CAPABLE OF PRODUCING LARGE HAIL AND 60 MPH WINDS. THIS STORM WAS   
  LOCATED 7 MILES SOUTHWEST OF LAKEVILLE...OR ABOUT 20 MILES NORTH   
  OF FARIBAULT...AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAKEVILLE...
  FARMINGTON...
  BURNSVILLE...
  APPLE VALLEY...
  ROSEMOUNT...
  EAGAN...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4476 9332 4447 9326 4472 9290 4479 9303
      4489 9313

$$

1 follow-up statement

000 
WWUS53 KMPX 232036
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
336 PM CDT WED MAY 23 2007

MNC037-232100-
/O.CON.KMPX.SV.W.0033.000000T0000Z-070523T2100Z/
DAKOTA MN-
336 PM CDT WED MAY 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR DAKOTA COUNTY...

AT 335 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. 
THIS STORM WAS LOCATED 3 MILES SOUTHWEST OF ROSEMOUNT...AND MOVING 
NORTHEAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE RANDOLPH...CASTLE 
ROCK...VERMILLION...SOUTH ST PAUL...INVER GROVE HEIGHTS...HAMPTON 
AND FARMINGTON.

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 4477 9330 4448 9325 4468 9280 4479 9303
      4492 9306

$$
TDK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 2:06 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	39 min
May 23, 2:25 PM CDT	Tornado Warning	MPX	Anoka, Hennepin	35 min
May 23, 2:39 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey, Washington	51 min
May 23, 2:43 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	62 min
May 23, 3:12 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	46 min
May 23, 3:22 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	53 min
May 23, 3:29 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey, Washington	61 min
May 23, 3:42 PM CDT	Severe Thunderstorm Warning	MPX	Rice	46 min
May 23, 4:07 PM CDT	Tornado Warning	MPX	Goodhue	53 min
May 23, 4:18 PM CDT	Tornado Warning	MPX	Dakota	20 min
May 23, 5:01 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	44 min
May 23, 6:49 PM CDT	Severe Thunderstorm Warning	MPX	Faribault	41 min
May 23, 6:57 PM CDT	Flash Flood Warning	MPX	Faribault, Freeborn	3 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2007 Every 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; radar from the NEXRAD Level II archive.