Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 244, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 2007, 3:59 AM CDT for Freeborn County, Minnesota. It was in force for 46 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 23, 2007, 3:59 AM CDT (08:59 UTC)
- Expired
- Jul 23, 2007, 4:45 AM CDT
- In force
- 46 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), 128 km from the middle of the area, began a volume at 09:00 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, 9.0 hours before the alert went out and 129 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
- 820 J/kg
- Mixed-layer CIN
- -261 J/kg
- Mixed-layer LCL
- 1143 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 258 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 230859 SVRMPX MNC047-230945- /O.NEW.KMPX.SV.W.0244.070723T0859Z-070723T0945Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 359 AM CDT MON JUL 23 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 445 AM CDT * AT 356 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES WEST OF CLARKS GROVE...OR ABOUT 7 MILES NORTH OF ALBERT LEA...AND MOVING SOUTH AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... ALBERT LEA... ALDEN... GLENVILLE... LAT...LON 4384 9311 4384 9356 4351 9365 4351 9319 $$
2 follow-up statements
000 WWUS53 KMPX 230922 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 421 AM CDT MON JUL 23 2007 MNC047-230945- /O.CON.KMPX.SV.W.0244.000000T0000Z-070723T0945Z/ FREEBORN MN- 421 AM CDT MON JUL 23 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR FREEBORN COUNTY... AT 417 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES NORTHEAST OF MANCHESTER...OR ABOUT OVER CLARKS GROVE...AND MOVING SOUTHWEST AT 10 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE MANSFIELD...TWIN LAKES... MANCHESTER...HAYWARD...HARTLAND...GLENVILLE...GENEVA...FREEBORN... CONGER AND CLARKS GROVE. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 4384 9321 4384 9359 4351 9365 4351 9327 $$
000 WWUS53 KMPX 230946 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 444 AM CDT MON JUL 23 2007 MNC047-230954- /O.EXP.KMPX.SV.W.0244.000000T0000Z-070723T0945Z/ FREEBORN MN- 444 AM CDT MON JUL 23 2007 ...THE SEVERE THUNDERSTORM WARNING FOR FREEBORN COUNTY EXPIRES AT 445 AM CDT... THUNDERSTORMS HAVE WEAKENED THEREFORE THE SEVERE THUNDERSTORM WARNING WAS ALLOWED TO EXPIRE. HOWEVER...STRONG THUNDERSTORMS REMAINED IN THE AREA...REMAIN ALERT FOR POSSIBLE ADDITIONAL WARNINGS. LAT...LON 4384 9321 4384 9359 4351 9365 4351 9327 $$
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.