Alert archive / Minnesota / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 77, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 8, 2009, 4:11 AM CDT for 4 counties in Minnesota. It was in force for 38 min. 1 report 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
- Aug 8, 2009, 4:11 AM CDT (09:11 UTC)
- Expired
- Aug 8, 2009, 4:49 AM CDT
- In force
- 38 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Meeker County, MN, Sherburne County, MN, Stearns County, MN, Wright County, MN
The radar
The Minneapolis radar (KMPX), 77 km from the middle of the area, began a volume at 09:10 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 |
|---|---|---|---|
| Aug 8, 4:25 AM CDT | HAIL 1.25 | 1 Wsw Kimball, MN | HAIL SHREDDED GARDEN. |
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 00:00Z, 9.2 hours before the alert went out and 75 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 341 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 080911 SVRMPX MNC093-141-145-171-081015- /O.NEW.KMPX.SV.W.0077.090808T0911Z-090808T1015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 411 AM CDT SAT AUG 8 2009 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN STEARNS COUNTY IN CENTRAL MINNESOTA... WEST CENTRAL SHERBURNE COUNTY IN CENTRAL MINNESOTA... NORTHWESTERN WRIGHT COUNTY IN CENTRAL MINNESOTA... NORTHEASTERN MEEKER COUNTY IN CENTRAL MINNESOTA... * UNTIL 515 AM CDT * AT 410 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 3 MILES SOUTH OF WATKINS...OR ABOUT 12 MILES NORTHEAST OF LITCHFIELD...AND MOVING NORTHEAST AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE... WATKINS... KIMBALL... SOUTH HAVEN... FAIRHAVEN... ANNANDALE... LUXEMBURG... ST AUGUSTA... CLEARWATER... ENFIELD... CLEAR LAKE... 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 4554 9407 4532 9384 4515 9446 4532 9455 TIME...MOT...LOC 0911Z 239DEG 19KT 4527 9438 $$
2 follow-up statements
000 WWUS53 KMPX 080949 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 449 AM CDT SAT AUG 8 2009 MNC093-141-145-171-080955- /O.CAN.KMPX.SV.W.0077.000000T0000Z-090808T1015Z/ STEARNS MN-SHERBURNE MN-WRIGHT MN-MEEKER MN- 449 AM CDT SAT AUG 8 2009 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MEEKER... NORTHWESTERN WRIGHT...WEST CENTRAL SHERBURNE AND SOUTHEASTERN STEARNS COUNTIES IS CANCELLED... RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. STRONG THUNDERSTORMS REAMIN IN THE AREA...WITH VERY HEAV RAIN. LAT...LON 4554 9407 4532 9384 4515 9446 4532 9455 TIME...MOT...LOC 0945Z 239DEG 19KT 4536 9416 $$
000 WWUS53 KMPX 080949 CCA SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 449 AM CDT SAT AUG 8 2009 MNC093-141-145-171-080955- /O.CAN.KMPX.SV.W.0077.000000T0000Z-090808T1015Z/ STEARNS MN-SHERBURNE MN-WRIGHT MN-MEEKER MN- 449 AM CDT SAT AUG 8 2009 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MEEKER... NORTHWESTERN WRIGHT...WEST CENTRAL SHERBURNE AND SOUTHEASTERN STEARNS COUNTIES IS CANCELLED... RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. STRONG THUNDERSTORMS REAMIN IN THE AREA...WITH VERY HEAVY RAIN. LAT...LON 4554 9407 4532 9384 4515 9446 4532 9455 TIME...MOT...LOC 0945Z 239DEG 19KT 4536 9416 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 10:39 PM CDT | Special Weather Statement | MPX | Sibley | 51 min |
| Aug 7, 11:04 PM CDT | Special Weather Statement | MPX | Renville | 26 min |
| Aug 8, 12:24 AM CDT | Areal Flood Advisory | MPX | Anoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 3 more | 3 hr |
| Aug 8, 12:28 AM CDT | Areal Flood Advisory | MPX | Anoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 3 more | 3 hr |
| Aug 8, 1:01 AM CDT | Flash Flood Warning | MPX | Carver, Dakota, Hennepin, Ramsey, Washington | 4 hr |
| Aug 8, 1:48 AM CDT | Flash Flood Warning | MPX | Carver, Dakota, Scott, Washington | 4 hr |
| Aug 8, 4:06 AM CDT | Flash Flood Watch | MPX | Anoka, Carver, Chippewa, Dakota, Goodhue, Hennepin and 14 more | 19 hr |
| Aug 8, 4:19 AM CDT | Heat Advisory | MPX | Blue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 14 more | 14 hr |
| Aug 8, 5:02 AM CDT | Areal Flood Advisory | MPX | Benton, Mille Lacs, Sherburne, Stearns, Wright | 3 hr |
| Aug 8, 5:29 AM CDT | Special Weather Statement | MPX | Benton | 61 min |
| Aug 8, 8:06 AM CDT | Severe Thunderstorm Warning | MPX | Renville | 39 min |
| Aug 8, 9:32 AM CDT | Special Weather Statement | MPX | Hennepin, Ramsey | 43 min |
| Aug 8, 9:43 AM CDT | Flash Flood Warning | MPX | Anoka, Hennepin, Wright | 3 hr |
| Aug 8, 3:46 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood | 28 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2009Every severe thunderstorm warning in 2009
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.