Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 252, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 3, 2011, 10:03 AM CDT for Freeborn County, Minnesota. It was in force for 27 min. 3 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 3, 2011, 10:03 AM CDT (15:03 UTC)
- Expired
- Sep 3, 2011, 10:30 AM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 128 km from the middle of the area, began a volume at 15:04 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 3, 10:04 AM CDT | HAIL 0.75 | 2 N Albert Lea, MN | OBSERVED AT THE ALBERT LEA AIRPORT. |
| Sep 3, 10:05 AM CDT | HAIL 0.88 | 5 Nne Albert Lea, MN | LASTED ABOUT TWO MINUTES. |
| Sep 3, 10:05 AM CDT | HAIL 1 | 2 Ne Albert Lea, MN | ONE MILE EAST OF BANCROFT. LASTED ABOUT FIVE MINUTES. LITTLE WIND. |
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, 3.1 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
- 1095 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 496 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
868 WUUS53 KMPX 031503 SVRMPX MNC047-031530- /O.NEW.KMPX.SV.W.0252.110903T1503Z-110903T1530Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1003 AM CDT SAT SEP 3 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL AND NORTHEAST FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 1030 AM CDT * AT 959 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ALBERT LEA...AND MOVING EAST AT 25 MPH. LOCATIONS IN THE WARNING INCLUDE... ALBERT LEA... HOLLANDALE... INTERSTATES 35 AND 90 NORTH AND EAST OF ALBERT LEA PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4379 9310 4366 9307 4364 9345 4372 9347 TIME...MOT...LOC 1502Z 262DEG 22KT 4369 9334 WIND...HAIL <50MPH 1.00IN $$
2 follow-up statements
720 WWUS53 KMPX 031522 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1022 AM CDT SAT SEP 3 2011 MNC047-031535- /O.CON.KMPX.SV.W.0252.000000T0000Z-110903T1530Z/ FREEBORN MN- 1022 AM CDT SAT SEP 3 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PARTS OF NORTHEAST FREEBORN COUNTY UNTIL 1030 AM CDT... AT 1018 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HOLLANDALE...MOVING EAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... HOLLANDALE AREAS JUST SOUTH AND EAST OF HOLLANDALE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 4379 9310 4369 9308 4369 9325 4375 9330 TIME...MOT...LOC 1521Z 256DEG 23KT 4373 9319 WIND...HAIL 60MPH 0.88IN $$ TDK
683 WWUS53 KMPX 031534 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1034 AM CDT SAT SEP 3 2011 MNC047-031548- /O.EXP.KMPX.SV.W.0252.000000T0000Z-110903T1530Z/ FREEBORN MN- 1034 AM CDT SAT SEP 3 2011 ...THE SEVERE THUNDERSTORM WARNING FOR PARTS OF NORTHEAST FREEBORN COUNTY HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HAIL THE SIZE OF QUARTERS WAS REPORTED ONE MILE EAST OF BANCROFT. LAT...LON 4379 9310 4369 9308 4369 9325 4375 9330 TIME...MOT...LOC 1522Z 256DEG 23KT 4373 9318 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 4:36 AM CDT | Special Weather Statement | MPX | Anoka, Chisago | 54 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.