Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 394, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 24, 2007, 4:28 PM CDT for Blue Earth County, Le Sueur County, Nicollet County, Minnesota. It was in force for 47 min. 4 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
- Sep 24, 2007, 4:28 PM CDT (21:28 UTC)
- Expired
- Sep 24, 2007, 5:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Blue Earth County, MN, Le Sueur County, MN, Nicollet County, MN
The radar
The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 21:31 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 |
|---|---|---|---|
| Sep 24, 4:42 PM CDT | TSTM WND GST 67 | North Mankato, MN | |
| Sep 24, 4:45 PM CDT | TSTM WND DMG | Kasota, MN | TREE DOWN ON POWER POLE. |
| Sep 24, 4:48 PM CDT | TSTM WND DMG | 2 W St Peter, MN | LARGE TREE LIMB DOWN. SMALL HAIL ALSO REPORTED. |
| Sep 24, 4:48 PM CDT | TSTM WND DMG | St Peter, MN | SHINGLES OFF A FEW ROOFS. |
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, 9.5 hours before the alert went out and 72 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
- 176 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 899 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 90 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 242128 SVRMPX MNC013-079-103-242215- /O.NEW.KMPX.SV.W.0394.070924T2128Z-070924T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 428 PM CDT MON SEP 24 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA... NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA... BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 515 PM CDT * AT 423 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 3 MILES SOUTHWEST OF LAKE CRYSTAL...OR ABOUT 15 MILES SOUTHWEST OF MANKATO...AND MOVING NORTHEAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... NORTH MANKATO... MANKATO... NICOLLET... ST PETER... LE CENTER... STAY INDOORS...AND AWAY FROM WINDOWS. LAT...LON 4445 9406 4444 9366 4395 9411 4411 9433 TIME...MOT...LOC 2128Z 212DEG 39KT 4411 9421 $$
1 follow-up statement
000 WWUS53 KMPX 242149 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 447 PM CDT MON SEP 24 2007 MNC013-079-103-242215- /O.CON.KMPX.SV.W.0394.000000T0000Z-070924T2215Z/ LE SUEUR MN-NICOLLET MN-BLUE EARTH MN- 447 PM CDT MON SEP 24 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR BLUE EARTH...NICOLLET AND LE SUEUR COUNTIES... AT 442 PM CDT...DAMAGING WINDS OF 67 MPH WERE REPORTED IN NORTH MANKATO WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS AT 447 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF KASOTA...OR ABOUT 6 MILES EAST OF NICOLLET...AND MOVING NORTHEAST AT 45 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE ST THOMAS...ST HENRY... OTTAWA...NORSELAND...ST PETER...SKYLINE...NORTH MANKATO...MANKATO... LE CENTER AND KASOTA. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 4445 9406 4444 9366 4409 9402 4420 9423 TIME...MOT...LOC 2147Z 212DEG 39KT 4428 9406 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 24, 4:35 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 25 min |
| Sep 24, 5:03 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 42 min |
| Sep 24, 5:22 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 38 min |
| Sep 24, 5:33 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 42 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.