Alert archive / Minnesota / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 76, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 3, 2009, 10:47 PM CDT for 4 counties in Minnesota. It was in force for 43 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 3, 2009, 10:47 PM CDT (03:47 UTC)
- Expired
- Aug 3, 2009, 11:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Anoka County, MN, Chisago County, MN, Isanti County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 85 km from the middle of the area, began a volume at 03:49 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 3, 11:00 PM CDT | TSTM WND DMG | 1 N Stacy, MN | SEVERAL TREES DOWN. |
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, 3.8 hours before the alert went out and 87 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
- 1977 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 85 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 040347
SVRMPX
MNC003-025-059-163-040430-
/O.NEW.KMPX.SV.W.0076.090804T0347Z-090804T0430Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1047 PM CDT MON AUG 3 2009
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
NORTHEASTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
FAR NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 1130 PM CDT
* AT 1045 PM 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 6
MILES NORTHEAST OF BODUM TO 5 MILES SOUTH OF ISANTI...AND MOVING
EAST SOUTHEAST AT 45 MPH.
LOCATIONS IN THE WARNING INCLUDE...
EAST BETHEL...
NORTH BRANCH...
BRANCH...
STACY...
WYOMING...
FOREST LAKE...
CHISAGO CITY...
CENTER CITY...
LINDSTROM...
SHAFER...
SCANDIA...
TAYLORS FALLS...
INTERSTATE 35...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4549 9269 4544 9264 4540 9264 4537 9268
4533 9269 4530 9275 4518 9276 4541 9339
4556 9319
TIME...MOT...LOC 0347Z 288DEG 40KT 4555 9306 4542 9322
$$4 follow-up statements
000
WWUS53 KMPX 040357
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1057 PM CDT MON AUG 3 2009
MNC003-025-059-163-040430-
/O.CON.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
ISANTI MN-CHISAGO MN-ANOKA MN-WASHINGTON MN-
1057 PM CDT MON AUG 3 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHERN WASHINGTON...NORTHEASTERN ANOKA...SOUTHERN CHISAGO AND
SOUTHEASTERN ISANTI COUNTIES...
AT 1053 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE SEVERE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM 3 MILES WEST OF NORTH BRANCH TO 3 MILES NORTHEAST
OF EAST BETHEL...AND MOVING EAST SOUTHEAST AT 40 MPH.
LOCATIONS IN THE WARNING INCLUDE...
STACY...WYOMING...CHISAGO CITY...FOREST LAKE...LINDSTROM...CENTER
CITY...SHAFER...TAYLORS FALLS...SCANDIA...OTISVILLE AND MARINE ON ST
CROIX.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4549 9269 4541 9264 4535 9269 4533 9270
4530 9275 4518 9276 4537 9328 4555 9309
TIME...MOT...LOC 0357Z 301DEG 35KT 4549 9300 4536 9312
$$000
WWUS53 KMPX 040409
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1109 PM CDT MON AUG 3 2009
MNC059-040418-
/O.CAN.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
ISANTI MN-
1109 PM CDT MON AUG 3 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ISANTI COUNTY IS
CANCELLED...
RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF ISANTI
COUNTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED FOR ISANTI COUNTY.
REPORT ANY DAMAGE TO YOUR LOCAL LAW ENFORCEMENT FOR RELAY TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4541 9264 4535 9269 4533 9270 4530 9275
4518 9276 4531 9312 4548 9295 4548 9269
TIME...MOT...LOC 0408Z 304DEG 30KT 4542 9293 4532 9301
$$
MNC003-025-163-040430-
/O.CON.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
CHISAGO MN-ANOKA MN-WASHINGTON MN-
1109 PM CDT MON AUG 3 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHERN WASHINGTON...NORTHEASTERN ANOKA AND SOUTHERN CHISAGO
COUNTIES...
AT 1108 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE SEVERE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM 3 MILES NORTHEAST OF STACY TO WYOMING...OR JUST
EAST OF INTERSTATE 35 AND MOVING EAST SOUTHEAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
FOREST LAKE...CHISAGO CITY...LINDSTROM...CENTER CITY...SHAFER...
SCANDIA...TAYLORS FALLS...OTISVILLE AND MARINE ON ST CROIX.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4541 9264 4535 9269 4533 9270 4530 9275
4518 9276 4531 9312 4548 9295 4548 9269
TIME...MOT...LOC 0408Z 304DEG 30KT 4542 9293 4532 9301
$$000
WWUS53 KMPX 040418
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1118 PM CDT MON AUG 3 2009
MNC003-040427-
/O.CAN.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
ANOKA MN-
1118 PM CDT MON AUG 3 2009
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ANOKA COUNTY IS
CANCELLED...
RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF THE WARNED
AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED
FOR ANOKA COUNTY.
LAT...LON 4541 9265 4539 9266 4533 9270 4530 9275
4518 9276 4527 9301 4544 9276
TIME...MOT...LOC 0417Z 300DEG 34KT 4538 9277 4528 9285
$$
MNC025-163-040430-
/O.CON.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
CHISAGO MN-WASHINGTON MN-
1118 PM CDT MON AUG 3 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR FAR NORTHERN WASHINGTON AND SOUTHEASTERN CHISAGO COUNTIES...
AT 1117 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE SEVERE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
SHAFER TO 3 MILES NORTHWEST OF SCANDIA...AND MOVING SOUTHEAST AT 40
MPH.
THESE STORMS HAVE HAD A SLOW WEAKENING TREND SINCE 1105 PM...AND
THUS A NEW WARNING IS UNLIKELY.
LOCATIONS IN THE WARNING INCLUDE...
SCANDIA...TAYLORS FALLS...OTISVILLE AND MARINE ON ST CROIX.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.
REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4541 9265 4539 9266 4533 9270 4530 9275
4518 9276 4527 9301 4544 9276
TIME...MOT...LOC 0417Z 300DEG 34KT 4538 9277 4528 9285
$$000
WWUS53 KMPX 040425
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1125 PM CDT MON AUG 3 2009
MNC025-163-040436-
/O.EXP.KMPX.SV.W.0076.000000T0000Z-090804T0430Z/
CHISAGO MN-WASHINGTON MN-
1125 PM CDT MON AUG 3 2009
...THE SEVERE THUNDERSTORM WARNING FOR FAR NORTHERN WASHINGTON AND
SOUTHEASTERN CHISAGO COUNTIES EXPIRES AT 1130 PM CDT...
SEVERE STORMS WERE ABOUT TO MOVE OUT OF THE AREA AND ADDITIONAL
SEVERE DEVELOPMENT IS NOT EXPECTED.
REPORT ANY DAMAGE THAT MAY HAVE OCCURED...TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.
LAT...LON 4541 9265 4539 9266 4533 9270 4530 9275
4518 9276 4527 9301 4544 9276
TIME...MOT...LOC 0426Z 300DEG 34KT 4533 9267 4524 9275
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 10:34 PM CDT | Special Weather Statement | MPX | Chisago, Isanti | 41 min |
| Aug 3, 10:54 PM CDT | Special Weather Statement | MPX | Swift | 51 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.