Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 416, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 21, 2005, 9:21 PM CDT for Hennepin County, Minnesota. It was in force for 39 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
- Sep 21, 2005, 9:21 PM CDT (02:21 UTC)
- Expired
- Sep 21, 2005, 10:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Hennepin County, MN
The radar
The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 02:24 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 |
|---|---|---|---|
| Sep 21, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 21, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 26 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
- 2043 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1714 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 274 m²/s²
- 0-3 km storm-relative helicity
- 406 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 9.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 220221 SVRMPX MNC053-220300- /O.NEW.KMPX.SV.W.0416.050922T0221Z-050922T0300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 921 PM CDT WED SEP 21 2005 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA * UNTIL 1000 PM CDT * AT 920 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED 11 MILES WEST OF MAPLE GROVE...OR ABOUT 11 MILES NORTHWEST OF EXCELSIOR... AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... MAPLE GROVE... PLYMOUTH... BROOKLYN PARK... MAPLE PLAIN... ROCKFORD... STAY INDOORS...AND AWAY FROM WINDOWS. LAT...LON 4514 9368 4497 9376 4496 9328 4518 9341 $$ KAT
1 follow-up statement
000 WWUS53 KMPX 220258 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 956 PM CDT WED SEP 21 2005 MNC053-220306- /O.EXP.KMPX.SV.W.0416.000000T0000Z-050922T0300Z/ HENNEPIN MN- 956 PM CDT WED SEP 21 2005 ...THE SEVERE THUNDERSTORM WARNING FOR HENNEPIN COUNTY WILL EXPIRE AT 1000 PM CDT... THE STORM IS NO LONGER SEVERE. HOWEVER...IT MAY STILL PRODUCE HAIL UP TO HALF INCH IN SIZE AS WELL AS VERY HEAVY RAIN AS IT MOVES SOUTHEAST THROUGH THE MINNEAPOLIS...MINNETONKA...AND BLOOMINGTON AREAS BETWEEN 10 AND 1030 PM. STREET FLOODING IS POSSIBLE AS THIS STORM MOVES THROUGH. LAT...LON 4514 9368 4497 9376 4496 9328 4518 9341 $$ KAT/BAP
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:07 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 53 min |
| Sep 21, 7:08 PM CDT | Tornado Warning | MPX | Anoka, Hennepin | 52 min |
| Sep 21, 7:16 PM CDT | Tornado Warning | MPX | Ramsey | 44 min |
| Sep 21, 7:22 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 53 min |
| Sep 21, 7:32 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 58 min |
| Sep 21, 7:33 PM CDT | Tornado Warning | MPX | Washington | 27 min |
| Sep 21, 7:42 PM CDT | Flash Flood Warning | MPX | Ramsey, Washington | 3 hr |
| Sep 21, 7:48 PM CDT | Flash Flood Warning | MPX | Hennepin | 3 hr |
| Sep 21, 7:54 PM CDT | Flash Flood Warning | MPX | Anoka | 3 hr |
| Sep 21, 7:57 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Ramsey | 63 min |
| Sep 21, 8:08 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne, Wright | 67 min |
| Sep 21, 8:11 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 64 min |
| Sep 21, 8:37 PM CDT | Flash Flood Warning | MPX | Sherburne | 3 hr |
| Sep 21, 8:38 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 22 min |
| Sep 21, 8:49 PM CDT | Flash Flood Warning | MPX | Wright | 3 hr |
| Sep 21, 9:27 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker | 63 min |
| Sep 21, 10:25 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 35 min |
| Sep 21, 10:43 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 33 min |
| Sep 21, 11:23 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 25 min |
| Sep 21, 11:34 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 41 min |
| Sep 21, 11:37 PM CDT | Severe Thunderstorm Warning | MPX | Rice | 38 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.