Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 77, NWS Twin Cities, MN

May 8, 2004Martin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 8, 2004, 1:38 AM CDT for Martin County, Minnesota. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 8, 2004, 1:38 AM CDT (06:38 UTC)
Expired: May 8, 2004, 2:15 AM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Martin County, MN

The radar

The Minneapolis radar (KMPX), 152 km from the middle of the area, began a volume at 06:38 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.

What was reported inside it

Time	Report	Where	Remark
May 8, 1:40 AM CDT	HAIL 0.88	Welcome, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 7, 10:20 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.6 hours before the alert went out and 151 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: 2481 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 375 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 080638 RRA
SVRMPX
MNC091-080715-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
136 AM CDT SAT MAY 8 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA
  THIS INCLUDES THE CITY OF FAIRMONT

* UNTIL 215 AM CDT

* AT 128 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED 17 MILES
  WEST OF FAIRMONT...OR ABOUT 9 MILES EAST OF JACKSON...AND MOVING
  EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FAIRMONT.
  WELCOME.
  GRANADA.
  WILBERT.

HAIL UP TO 1 INCH IN DIAMETER HAS BEEN REPORTED IN SHERBURN WITH 
THIS STORM.

LAT...LON 4364 9481 4372 9486 4383 9445 4384 9425
          4367 9425 4356 9479

$$

MARGRAF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 12:16 AM CDT	Severe Thunderstorm Warning	MPX	Martin, Watonwan	44 min
May 8, 12:36 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	39 min
May 8, 1:03 AM CDT	Severe Thunderstorm Warning	MPX	Faribault	42 min
May 8, 1:21 AM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Steele	39 min
May 8, 1:38 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	52 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.