Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 104, NWS Twin Cities, MN

May 9, 2004Brown County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 9, 2004, 8:22 PM CDT for Brown County, Minnesota. It was in force for 53 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 9, 2004, 8:22 PM CDT (01:22 UTC)
Expired: May 9, 2004, 9:15 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Brown County, MN

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 9, 3:55 PM CDT	Tornado Watch	SPC	5 hr
May 9, 7:20 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.4 hours before the alert went out and 302 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2759 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -56 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.

602 
WUUS53 KMPX 100122
SVRMPX
MNC015-100215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
821 PM CDT SUN MAY 9 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA
  
* UNTIL 915 PM CDT

* AT 815 PM CDT...TRAINED SPOTTERS REPORTED A SEVERE THUNDERSTORM
  WITH LARGE HAIL. THIS STORM WAS LOCATED NEAR SLEEPY EYE...OR       
  ABOUT 8 MILES WEST OF NEW ULM...AND MOVING EAST AT 25 MPH.         
  SPOTTERS 5 MILES EAST OF SLEEPY EYE REPORTED NICKEL SIZED HAIL     
  WITH THESE STORMS.

* LOCATIONS IMPACTED INCLUDE...
  NEW ULM.
  SLEEPY EYE.

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 4440 9466 4425 9493 4412 9510 4412 9437
          4430 9445

$$

BINAU

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:13 PM CDT	Severe Thunderstorm Warning	MPX	Scott	47 min
May 9, 7:35 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet, Sibley	55 min
May 9, 8:33 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	57 min
May 9, 9:01 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	44 min
May 9, 9:25 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	65 min
May 9, 9:34 PM CDT	Severe Thunderstorm Warning	MPX	Rice	41 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2004 Every severe thunderstorm warning in 2004

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.