Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 227, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 21, 2005, 5:40 AM CDT for Steele County, Minnesota. It was in force for 40 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
- Jul 21, 2005, 5:40 AM CDT (10:40 UTC)
- Expired
- Jul 21, 2005, 6:20 AM CDT
- In force
- 40 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Steele County, MN
The radar
The Minneapolis radar (KMPX), 91 km from the middle of the area, began a volume at 10:41 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 |
|---|---|---|---|
| Jul 21, 4:05 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 10.7 hours before the alert went out and 92 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
- 1056 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1616 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 211041 SVRMPX MNC147-211130- /O.NEW.KMPX.SV.W.0227.050721T1040Z-050721T1130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 540 AM CDT THU JUL 21 2005 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... STEELE COUNTY IN SOUTH CENTRAL MINNESOTA * UNTIL 630 AM CDT * AT 537 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING THIS STORM WAS LOCATED 10 MILES SOUTHWEST OF OWATONNA...OR ABOUT 7 MILES SOUTHEAST OF WASECA...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... OWATONNA... CLINTON FALLS... HOPE... MEDFORD... MERIDEN... LAT...LON 4419 9341 4387 9340 4386 9306 4419 9306 $$
2 follow-up statements
000 WWUS53 KMPX 211103 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 603 AM CDT THU JUL 21 2005 MNC147-211130- /O.CON.KMPX.SV.W.0227.000000T0000Z-050721T1130Z/ STEELE MN- 603 AM CDT THU JUL 21 2005 ...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 630 AM CDT FOR STEELE COUNTY... AT 600 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS LOCATED NEAR BIXBY...OR ABOUT 8 MILES SOUTHEAST OF OWATONNA...MOVING EAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. LAT...LON 4407 9315 4391 9316 4392 9306 4407 9306 $$
000 WWUS53 KMPX 211120 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 620 AM CDT THU JUL 21 2005 MNC147-211130- /O.CAN.KMPX.SV.W.0227.000000T0000Z-050721T1130Z/ STEELE MN- 620 AM CDT THU JUL 21 2005 ...THE SEVERE THUNDERSTORM WARNING FOR STEELE COUNTY IS CANCELLED... RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE WARNED AREA. THUS THE WARNING HAS BEEN CANCELLED. LAT...LON 4407 9315 4391 9316 4392 9306 4407 9306 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:40 AM CDT | Severe Thunderstorm Warning | MPX | Martin, Watonwan | 65 min |
| Jul 21, 4:15 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault | 60 min |
| Jul 21, 4:45 AM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Waseca | 60 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.