Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 124, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 12, 2015, 9:14 PM CDT for Morrison County, Minnesota. It was in force for 46 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 12, 2015, 9:14 PM CDT (02:14 UTC)
- Expired
- Aug 12, 2015, 10:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
County Morrison County, MN
The radar
The Minneapolis radar (KMPX), 155 km from the middle of the area, began a volume at 02:16 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 12, 7:03 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.2 hours before the alert went out and 154 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
- 183 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 1528 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
619
WUUS53 KMPX 130214
SVRMPX
MNC097-130300-
/O.NEW.KMPX.SV.W.0124.150813T0214Z-150813T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
914 PM CDT WED AUG 12 2015
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL MORRISON COUNTY IN CENTRAL MINNESOTA...
* UNTIL 1000 PM CDT
* AT 913 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FORT
RIPLEY...OR 12 MILES NORTH OF LITTLE FALLS...MOVING SOUTH AT 25
MPH.
HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT
WIND DAMAGE TO ROOFS...SIDING AND TREES.
* THIS SEVERE THUNDERSTORM WILL BE NEAR...
LITTLE FALLS AROUND 935 PM CDT.
PIERZ AROUND 950 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CAMP
RIPLEY JUNCTION...LITTLE FALLS AIRPORT AND GENOLA.
THIS INCLUDES U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 142
AND 150.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4621 9440 4618 9437 4616 9437 4616 9413
4599 9400 4591 9437 4622 9446 4623 9440
TIME...MOT...LOC 0213Z 339DEG 22KT 4616 9431
HAIL...1.75IN
WIND...60MPH
$$
SPD3 follow-up statements
965
WWUS53 KMPX 130232
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
932 PM CDT WED AUG 12 2015
MNC097-130300-
/O.CON.KMPX.SV.W.0124.000000T0000Z-150813T0300Z/
MORRISON MN-
932 PM CDT WED AUG 12 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR CENTRAL MORRISON COUNTY...
AT 931 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER CAMP RIPLEY
JUNCTION...OR 8 MILES NORTHEAST OF LITTLE FALLS...MOVING SOUTHEAST
AT 25 MPH.
HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.
SOURCE...LAW ENFORCEMENT REPORTED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
THIS SEVERE STORM WILL BE NEAR...
LITTLE FALLS AROUND 945 PM CDT.
PIERZ AROUND 1000 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CAMP
RIPLEY JUNCTION...LITTLE FALLS AIRPORT AND GENOLA.
THIS INCLUDES U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 143
AND 150.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4616 9441 4616 9413 4599 9400 4591 9437
TIME...MOT...LOC 0231Z 339DEG 19KT 4609 9427
HAIL...1.25IN
WIND...60MPH
$$
SPD125
WWUS53 KMPX 130246
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
946 PM CDT WED AUG 12 2015
MNC097-130300-
/O.CON.KMPX.SV.W.0124.000000T0000Z-150813T0300Z/
MORRISON MN-
946 PM CDT WED AUG 12 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR CENTRAL MORRISON COUNTY...
AT 946 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CAMP RIPLEY
JUNCTION...OR 7 MILES NORTHEAST OF LITTLE FALLS...MOVING SOUTH AT 20
MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
THIS SEVERE STORM WILL BE NEAR...
PIERZ AROUND 1000 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CAMP
RIPLEY JUNCTION...LITTLE FALLS AIRPORT AND GENOLA.
THIS INCLUDES U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 144
AND 150.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4610 9436 4613 9412 4599 9400 4591 9437
TIME...MOT...LOC 0246Z 338DEG 19KT 4604 9424
HAIL...1.00IN
WIND...60MPH
$$
SPD359
WWUS53 KMPX 130251
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
951 PM CDT WED AUG 12 2015
MNC097-130301-
/O.EXP.KMPX.SV.W.0124.000000T0000Z-150813T0300Z/
MORRISON MN-
951 PM CDT WED AUG 12 2015
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MORRISON COUNTY WILL
EXPIRE AT 1000 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
CENTRAL MINNESOTA.
LAT...LON 4610 9436 4613 9412 4599 9400 4591 9437
TIME...MOT...LOC 0249Z 339DEG 22KT 4604 9424
$$
SPDThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 8:22 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 53 min |
| Aug 13, 12:47 AM CDT | Special Weather Statement | MPX | Todd | 28 min |
| Aug 13, 12:58 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Todd | 32 min |
| Aug 13, 1:20 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Morrison, Todd | 40 min |
| Aug 13, 2:04 AM CDT | Special Weather Statement | MPX | Stearns | 26 min |
| Aug 13, 3:01 AM CDT | Special Weather Statement | MPX | Meeker | 29 min |
| Aug 13, 3:18 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker | 27 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2015Every severe thunderstorm warning in 2015
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.