Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 3, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 21, 2007, 7:53 PM CDT for Freeborn County, Minnesota. It was in force for 52 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
- Mar 21, 2007, 7:53 PM CDT (00:53 UTC)
- Expired
- Mar 21, 2007, 8:45 PM CDT
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 141 km from the middle of the area, began a volume at 00:54 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.9 hours before the alert went out and 141 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 530 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -79 m²/s²
- 0-3 km storm-relative helicity
- -5 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 220054 SVRMPX MNC047-220145- /O.NEW.KMPX.SV.W.0003.070322T0053Z-070322T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 753 PM CDT WED MAR 21 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 845 PM CDT * AT 750 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED 13 MILES SOUTHWEST OF ALBERT LEA...OR ABOUT 7 MILES NORTH OF LAKE MILLS... AND MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... ALBERT LEA... HAYWARD... GLENVILLE... TWIN LAKES... MYRTLE... LONDON... 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 4357 9357 4351 9357 4351 9307 4380 9306 $$
1 follow-up statement
000 WWUS53 KMPX 220137 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 837 PM CDT WED MAR 21 2007 MNC047-220147- /O.EXP.KMPX.SV.W.0003.000000T0000Z-070322T0145Z/ FREEBORN MN- 837 PM CDT WED MAR 21 2007 ...THE SEVERE THUNDERSTORM WARNING FOR FREEBORN COUNTY EXPIRES AT 845 PM CDT... SEVERE STORMS HAVE MOVED OUT OF THE AREA AND ADDITIONAL DEVELOPMENT IS NOT EXPECTED. LAT...LON 4357 9357 4351 9357 4351 9307 4380 9306 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 7:01 PM CDT | Severe Thunderstorm Warning | MPX | Faribault | 29 min |
| Mar 21, 7:58 PM CDT | Severe Thunderstorm Warning | MPX | Rice, Steele, Waseca | 37 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2007Every severe thunderstorm warning in 2007
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.