Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 81, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 9, 2004, 2:31 PM CDT for Swift County, Minnesota. It was in force for 59 min. 3 reports 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 9, 2004, 2:31 PM CDT (19:31 UTC)
- Expired
- May 9, 2004, 3:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Swift County, MN
The radar
The Minneapolis radar (KMPX), 177 km from the middle of the area, began a volume at 19:32 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 9, 3:17 PM CDT | HAIL 0.75 | Murdock, MN | |
| May 9, 3:20 PM CDT | HAIL 1.75 | Murdock, MN | |
| May 9, 3:30 PM CDT | HAIL 1 | 2 W Sunburg, 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 9, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 7.5 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 8 J/kg
- Mixed-layer CIN
- -483 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 091931 SVRMPX MNC151-092030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 231 PM CDT SUN MAY 9 2004 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SWIFT COUNTY IN WEST CENTRAL MINNESOTA THIS INCLUDES THE CITY OF BENSON * UNTIL 330 PM CDT * AT 227 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED 17 MILES WEST OF BENSON...OR ABOUT 14 MILES SOUTH OF MORRIS...AND MOVING EAST AT 40 MPH. * LOCATIONS IMPACTED INCLUDE... BENSON. LAT...LON 4537 9602 4530 9602 4520 9527 4539 9528 $$ RJN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:04 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 56 min |
| May 9, 1:53 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stevens | 67 min |
| May 9, 2:59 PM CDT | Severe Thunderstorm Warning | MPX | Pope | 31 min |
| May 9, 3:21 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Stearns | 54 min |
| May 9, 3:29 PM CDT | Severe Thunderstorm Warning | MPX | Swift | 31 min |
| May 9, 3:31 PM CDT | Tornado Warning | MPX | Kandiyohi | 29 min |
| May 9, 3:51 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne, Wright | 54 min |
| May 9, 3:59 PM CDT | Tornado Warning | MPX | Kandiyohi | 31 min |
| May 9, 4:05 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns | 55 min |
| May 9, 4:13 PM CDT | Tornado Warning | MPX | Meeker, Stearns | 47 min |
| May 9, 4:40 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Wright | 65 min |
| May 9, 4:49 PM CDT | Tornado Warning | MPX | Anoka, Sherburne, Wright | 26 min |
| May 9, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 47 min |
| May 9, 5:11 PM CDT | Tornado Warning | MPX | Carver, Hennepin | 49 min |
| May 9, 5:18 PM CDT | Severe Thunderstorm Warning | MPX | Anoka | 42 min |
| May 9, 5:26 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 64 min |
| May 9, 5:46 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 44 min |
| May 9, 5:47 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey, Washington | 58 min |
| May 9, 5:48 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 42 min |
| May 9, 6:18 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 57 min |
| May 9, 6:32 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 58 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2004Every 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.