Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 97, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2014, 9:47 PM CDT for Chisago County, Washington County, Minnesota. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 2014, 9:47 PM CDT (02:47 UTC)
- Expired
- Aug 24, 2014, 10:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Chisago County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 93 km from the middle of the area, began a volume at 02:48 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 24, 3:45 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.8 hours before the alert went out and 94 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
- 2425 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1141 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 14.7
The text
As transmitted, in the capitals the NWS used until 2016.
630
WUUS53 KMPX 250247
SVRMPX
MNC025-163-250330-
/O.NEW.KMPX.SV.W.0097.140825T0247Z-140825T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
947 PM CDT SUN AUG 24 2014
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
NORTHWESTERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 1030 PM CDT
* AT 946 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES WEST OF CENTER CITY TO FOREST LAKE...AND
MOVING NORTHEAST AT 30 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
* LOCATIONS IMPACTED INCLUDE...
CENTER CITY...CHISAGO CITY...BRANCH...LINDSTROM AND SHAFER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 4554 9272 4551 9272 4544 9264 4519 9301
4549 9302 4557 9286 4556 9283 4557 9277
TIME...MOT...LOC 0247Z 227DEG 24KT 4540 9292 4526 9299
HAIL...1.00IN
WIND...<50MPH
$$
JC2 follow-up statements
329
WWUS53 KMPX 250307
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1007 PM CDT SUN AUG 24 2014
MNC163-250316-
/O.CAN.KMPX.SV.W.0097.000000T0000Z-140825T0330Z/
WASHINGTON MN-
1007 PM CDT SUN AUG 24 2014
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WASHINGTON COUNTY
IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREAS WASHINGTON COUNTY...AND NO LONGER POSES AN IMMEDIATE THREAT TO
LIFE OR PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT.
LAT...LON 4554 9272 4551 9272 4544 9264 4530 9285
4530 9291 4551 9290 4557 9286 4556 9283
4557 9277
TIME...MOT...LOC 0306Z 231DEG 25KT 4549 9277 4535 9285
$$
MNC025-250330-
/O.CON.KMPX.SV.W.0097.000000T0000Z-140825T0330Z/
CHISAGO MN-
1007 PM CDT SUN AUG 24 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CHISAGO COUNTY UNTIL 1030 PM CDT...
AT 1004 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTH OF CENTER CITY TO CENTER CITY...AND
MOVING NORTHEAST AT 30 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
SHAFER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!
&&
LAT...LON 4554 9272 4551 9272 4544 9264 4530 9285
4530 9291 4551 9290 4557 9286 4556 9283
4557 9277
TIME...MOT...LOC 0306Z 231DEG 25KT 4549 9277 4535 9285
HAIL...1.00IN
WIND...<50MPH
$$
JC320
WWUS53 KMPX 250322
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1022 PM CDT SUN AUG 24 2014
MNC025-250333-
/O.EXP.KMPX.SV.W.0097.000000T0000Z-140825T0330Z/
CHISAGO MN-
1022 PM CDT SUN AUG 24 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHISAGO COUNTY
WILL EXPIRE AT 1030 PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT.
LAT...LON 4554 9272 4551 9272 4544 9264 4530 9285
4530 9291 4551 9290 4557 9286 4556 9283
4557 9277
TIME...MOT...LOC 0323Z 231DEG 25KT 4556 9264 4542 9272
$$
JCThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 7:12 PM CDT | Special Weather Statement | MPX | Anoka | 48 min |
| Aug 24, 7:21 PM CDT | Tornado Warning | MPX | Mille Lacs | 24 min |
| Aug 24, 7:29 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Mille Lacs, Sherburne | 46 min |
| Aug 24, 8:00 PM CDT | Special Weather Statement | MPX | Kanabec | 30 min |
| Aug 24, 8:30 PM CDT | Special Weather Statement | MPX | Anoka | 45 min |
| Aug 24, 9:12 PM CDT | Special Weather Statement | MPX | Chisago | 48 min |
| Aug 24, 9:30 PM CDT | Special Weather Statement | MPX | Anoka | 30 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2014Every severe thunderstorm warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.