Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 1, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 21, 2007, 6:55 PM CDT for Steele County, Waseca County, Minnesota. It was in force for 50 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 21, 2007, 6:55 PM CDT (23:55 UTC)
- Expired
- Mar 21, 2007, 7:45 PM CDT
- In force
- 50 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 101 km from the middle of the area, began a volume at 23:58 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 21, 7:11 PM CDT | HAIL 1 | 7 W New Richland, MN | |
| Mar 21, 7:33 PM CDT | HAIL 1.25 | 2 Sw Steele Center, MN | REPORTED JUST EAST OF HOPE ON I-35 AT HWY 4 EXIT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 102 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
- 529 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 338 m²/s²
- 0-3 km storm-relative helicity
- 323 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 212357 SVRMPX MNC147-161-220045- /O.NEW.KMPX.SV.W.0001.070321T2355Z-070322T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 655 PM CDT WED MAR 21 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WASECA COUNTY IN SOUTH CENTRAL MINNESOTA... STEELE COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 745 PM CDT * AT 653 PM CDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM WITH PENNY SIZE HAIL JUST SOUTH OF WALDORF. THIS STORM WAS LOCATED 5 MILES SOUTHEAST OF WALDORF...AND MOVING EAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... OTISCO... NEW RICHLAND... ELLENDALE... STEELE CENTER... BIXBY... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. LAT...LON 4394 9371 4385 9368 4387 9307 4412 9305 $$
3 follow-up statements
000 WWUS53 KMPX 220015 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 713 PM CDT WED MAR 21 2007 MNC147-161-220045- /O.CON.KMPX.SV.W.0001.000000T0000Z-070322T0045Z/ WASECA MN-STEELE MN- 713 PM CDT WED MAR 21 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR STEELE AND WASECA COUNTIES... AT 711 PM CDT...HAIL 1 INCH IN DIAMETER WAS REPORTED 7 MILES WEST OF NEW RICHLAND. AT 713 PM CDT...THIS STORM WAS LOCATED NEAR NEW RICHLAND...OR ABOUT 24 MILES SOUTHWEST OF CLAREMONT...AND MOVING EAST AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE STEELE CENTER...OTISCO... BIXBY...WALDORF...NEW RICHLAND AND ELLENDALE. LAT...LON 4394 9371 4385 9368 4387 9307 4412 9305 $$
000 WWUS53 KMPX 220028 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 727 PM CDT WED MAR 21 2007 MNC161-220037- /O.CAN.KMPX.SV.W.0001.000000T0000Z-070322T0045Z/ WASECA MN- 727 PM CDT WED MAR 21 2007 ...THE SEVERE THUNDERSTORM WARNING FOR WASECA COUNTY IS CANCELLED... SEVERE WEATHER HAS MOVED EAST OF THE COUNTY. LAT...LON 4403 9332 4385 9336 4387 9307 4412 9305 $$ MNC147-220045- /O.CON.KMPX.SV.W.0001.000000T0000Z-070322T0045Z/ STEELE MN- 727 PM CDT WED MAR 21 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR STEELE COUNTY... AT 724 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS LOCATED NEAR ELLENDALE...OR ABOUT 17 MILES SOUTHWEST OF CLAREMONT...AND MOVING EAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE STEELE CENTER...BIXBY AND ELLENDALE. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 4403 9332 4385 9336 4387 9307 4412 9305 $$
000 WWUS53 KMPX 220048 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 745 PM CDT WED MAR 21 2007 MNC147-220055- /O.EXP.KMPX.SV.W.0001.000000T0000Z-070322T0045Z/ STEELE MN- 745 PM CDT WED MAR 21 2007 ...THE SEVERE THUNDERSTORM WARNING FOR STEELE COUNTY EXPIRED AT 745 PM CDT... AT 745 PM CDT...THUNDERSTORMS REMAINED OVER FAR SOUTHEAST STEELE COUNTY...BETWEEN BIXBY AND BLOOMING PRAIRIE...BUT THE STORMS HAD WEAKENED BELOW SEVERE LEVELS. ADDITIONAL DEVELOPMENT IS NOT EXPECTED. LAT...LON 4403 9332 4385 9336 4387 9307 4412 9305 $$
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.