Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 9, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 21, 2007, 6:12 AM CDT for Stearns 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
- Apr 21, 2007, 6:12 AM CDT (11:12 UTC)
- Expired
- Apr 21, 2007, 6:52 AM CDT
- In force
- 40 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Stearns County, MN
The radar
The Minneapolis radar (KMPX), 105 km from the middle of the area, began a volume at 11:13 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, 11.2 hours before the alert went out and 103 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
- 1916 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 95 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 211112 SVRMPX MNC145-211215- /O.NEW.KMPX.SV.W.0009.070421T1112Z-070421T1215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 612 AM CDT SAT APR 21 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... STEARNS COUNTY IN CENTRAL MINNESOTA... * UNTIL 715 AM CDT * AT 609 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED 7 MILES EAST OF PAYNESVILLE...OR ABOUT 18 MILES NORTH OF LITCHFIELD...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... ALBANY... COLD SPRING... PLEASANT LAKE... STAY INDOORS...AND AWAY FROM WINDOWS. LAT...LON 4533 9475 4534 9427 4577 9428 4576 9458 $$
2 follow-up statements
000 WWUS53 KMPX 211130 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 627 AM CDT SAT APR 21 2007 MNC145-211215- /O.CON.KMPX.SV.W.0009.000000T0000Z-070421T1215Z/ STEARNS MN- 627 AM CDT SAT APR 21 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR STEARNS COUNTY... AT 620 AM CDT...PENNY SIZE HAIL WAS REPORTED IN SARTELL WITH AN ADDITIONAL SEVERE THUNDERSTORM. AT 626 AM CDT...ANOTHER STORM WAS LOCATED NEAR COLD SPRING...OR ABOUT 10 MILES NORTH OF WATKINS...AND MOVING NORTHEAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE ST NICHOLAS....COLLEGEVILLE...ST STEPHEN...ST MARTIN...ST JOSEPH...ROSCOE...ROCKVILLE....HOLDINGFORD...COLD SPRING...AVON AND ALBANY. LAT...LON 4533 9475 4534 9427 4577 9428 4576 9458 $$
000 WWUS53 KMPX 211152 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 652 AM CDT SAT APR 21 2007 MNC145-211202- /O.CAN.KMPX.SV.W.0009.000000T0000Z-070421T1215Z/ STEARNS MN- 652 AM CDT SAT APR 21 2007 ...THE SEVERE THUNDERSTORM WARNING FOR STEARNS COUNTY IS CANCELLED... RADAR INDICATED THAT THE STORM HAD WEAKENED TO BELOW SEVERE LIMITS. THUS THE WARNING HAS BEEN CANCELLED. LAT...LON 4533 9475 4534 9427 4577 9428 4576 9458 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 3:46 AM CDT | Wind Advisory | MPX | Blue Earth, Brown, Faribault, Freeborn, Martin, Redwood and 4 more | 16 hr |
| Apr 21, 9:47 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Renville, Sibley, Wright | 58 min |
| Apr 21, 11:31 AM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 29 min |
| Apr 21, 11:57 AM CDT | Severe Thunderstorm Warning | MPX | Isanti | 33 min |
| Apr 21, 12:16 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 44 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.