Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 175, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 2011, 9:17 AM CDT for 5 counties in Minnesota. It was in force for 58 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
- Jul 23, 2011, 9:17 AM CDT (14:17 UTC)
- Expired
- Jul 23, 2011, 10:15 AM CDT
- In force
- 58 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Dakota County, MN, Goodhue County, MN, Rice County, MN, Scott County, MN, Steele County, MN
The radar
The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 14:18 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 |
|---|---|---|---|
| Jul 23, 9:40 AM CDT | TSTM WND DMG | Northfield, MN | 12 TO 18 DIAMETER BRANCHES DOWN. |
| Jul 23, 9:41 AM CDT | TSTM WND DMG | Northfield, MN | TREES DOWN. |
| Jul 23, 10:12 AM CDT | TSTM WND GST 51 | 1 Nw Wastedo, MN |
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, 2.3 hours before the alert went out and 71 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
- 1467 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 875 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
152
WUUS53 KMPX 231417
SVRMPX
MNC037-049-131-139-147-231515-
/O.NEW.KMPX.SV.W.0175.110723T1417Z-110723T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
917 AM CDT SAT JUL 23 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHWESTERN GOODHUE COUNTY IN SOUTHEAST MINNESOTA...
RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
SOUTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
NORTHERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 1015 AM CDT
* AT 914 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
NEW MARKET TO LONSDALE TO 6 MILES NORTHEAST OF KILKENNY...AND
MOVING SOUTHEAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
FARIBAULT...
NEW MARKET...
WEBSTER...
ELKO...
WARSAW...
DUNDAS...
NORTHFIELD...
MEDFORD...
RUSKIN...
NERSTRAND...
STANTON...
DENNISON...
KENYON...
BOMBAY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
&&
LAT...LON 4419 9339 4431 9351 4447 9341 4462 9343
4445 9275 4419 9272 4419 9303 4412 9304
4411 9307
TIME...MOT...LOC 1417Z 302DEG 32KT 4456 9338 4445 9335
4433 9343
WIND...HAIL 60MPH 1.00IN
$$2 follow-up statements
334
WWUS53 KMPX 231447
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
947 AM CDT SAT JUL 23 2011
MNC139-231500-
/O.CAN.KMPX.SV.W.0175.000000T0000Z-110723T1515Z/
SCOTT MN-
947 AM CDT SAT JUL 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SCOTT COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4419 9339 4429 9336 4442 9326 4457 9325
4445 9275 4419 9272 4419 9303 4412 9304
4411 9307
TIME...MOT...LOC 1445Z 302DEG 32KT 4443 9308 4432 9305
4420 9313
$$
MNC037-049-131-147-231515-
/O.CON.KMPX.SV.W.0175.000000T0000Z-110723T1515Z/
DAKOTA MN-GOODHUE MN-RICE MN-STEELE MN-
947 AM CDT SAT JUL 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
STEELE...EASTERN RICE...SOUTHWESTERN GOODHUE AND SOUTH CENTRAL DAKOTA
COUNTIES UNTIL 1015 AM CDT...
AT 945 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM NORTHFIELD TO NERSTRAND TO RUSKIN...MOVING
SOUTHEAST AT 35 MPH.
IN ADDITION...AT 941 AM CDT...TREES WERE REPORTED BLOWN DOWN IN
NORTHFIELD WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
STANTON...DENNISON...KENYON...BOMBAY...WASTEDO...HADER...
WANAMINGO...MERTON AND MOLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
&&
LAT...LON 4419 9339 4429 9336 4442 9326 4457 9325
4445 9275 4419 9272 4419 9303 4412 9304
4411 9307
TIME...MOT...LOC 1445Z 302DEG 32KT 4443 9308 4432 9305
4420 9313
WIND...HAIL 60MPH 1.00IN
$$435
WWUS53 KMPX 231503
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1003 AM CDT SAT JUL 23 2011
MNC037-231517-
/O.CAN.KMPX.SV.W.0175.000000T0000Z-110723T1515Z/
DAKOTA MN-
1003 AM CDT SAT JUL 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL DAKOTA COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4415 9323 4434 9311 4439 9305 4451 9303
4445 9275 4419 9272 4419 9303 4412 9304
4411 9307
TIME...MOT...LOC 1502Z 302DEG 32KT 4442 9287 4431 9284
4419 9292
$$
MNC049-131-147-231515-
/O.CON.KMPX.SV.W.0175.000000T0000Z-110723T1515Z/
GOODHUE MN-RICE MN-STEELE MN-
1003 AM CDT SAT JUL 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
STEELE...SOUTHEASTERN RICE AND SOUTHWESTERN GOODHUE COUNTIES UNTIL
1015 AM CDT...
AT 959 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM WASTEDO TO BOMBAY TO WEST CONCORD...MOVING
SOUTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
WANAMINGO...HADER....KENYON...MERTON AND WASTEDO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
&&
LAT...LON 4415 9323 4434 9311 4439 9305 4451 9303
4445 9275 4419 9272 4419 9303 4412 9304
4411 9307
TIME...MOT...LOC 1502Z 302DEG 32KT 4442 9287 4431 9284
4419 9292
WIND...HAIL 60MPH 1.00IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 7:11 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 30 min |
| Jul 22, 7:55 PM CDT | Special Weather Statement | MPX | Lac qui Parle | 50 min |
| Jul 22, 8:47 PM CDT | Special Weather Statement | MPX | Lac qui Parle | 73 min |
| Jul 23, 3:56 AM CDT | Heat Advisory | MPX | Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 7 more | 11 hr |
| Jul 23, 4:38 AM CDT | Special Weather Statement | MPX | Douglas, Pope, Stevens | 67 min |
| Jul 23, 4:48 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 42 min |
| Jul 23, 5:21 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Morrison, Pope, Stearns, Todd | 54 min |
| Jul 23, 6:21 AM CDT | Special Weather Statement | MPX | Benton, Kandiyohi, Meeker, Mille Lacs, Morrison, Sherburne and 1 more | 69 min |
| Jul 23, 7:39 AM CDT | Special Weather Statement | MPX | Anoka, Chisago, Isanti, Kanabec, McLeod, Meeker and 5 more | 51 min |
| Jul 23, 8:27 AM CDT | Special Weather Statement | MPX | Carver, Scott | 48 min |
| Jul 23, 8:46 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Le Sueur, Rice, Scott | 44 min |
| Jul 23, 10:09 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 51 min |
| Jul 23, 1:04 PM CDT | Special Weather Statement | MPX | Pope | 56 min |
| Jul 23, 1:53 PM CDT | Special Weather Statement | MPX | Stearns | 52 min |
| Jul 23, 1:55 PM CDT | Special Weather Statement | MPX | Benton | 35 min |
| Jul 23, 2:34 PM CDT | Special Weather Statement | MPX | Sherburne | 41 min |
| Jul 23, 3:08 PM CDT | Special Weather Statement | MPX | Sherburne | 37 min |
| Jul 23, 4:03 PM CDT | Special Weather Statement | MPX | Ramsey, Washington | 57 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.