Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 83, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 2014, 7:04 PM CDT for Steele County, Waseca County, Minnesota. It was in force for 28 min. 2 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
- Aug 18, 2014, 7:04 PM CDT (00:04 UTC)
- Expired
- Aug 18, 2014, 7:32 PM CDT
- In force
- 28 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 84 km from the middle of the area, began a volume at 00:04 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 18, 7:06 PM CDT | HAIL 0.88 | 6 W Owatonna, MN | NICKEL SIZED HAIL WAS REPORTED WEST OF OWATONNA. |
| Aug 18, 7:15 PM CDT | TSTM WND GST 58 | 3 Nnw Owatonna, 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 00:00Z, 0.1 hours before the alert went out and 84 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
- 238 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1787 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
786
WUUS53 KMPX 190004
SVRMPX
MNC147-161-190045-
/O.NEW.KMPX.SV.W.0083.140819T0004Z-140819T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
704 PM CDT MON AUG 18 2014
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
NORTHEASTERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 745 PM CDT
* AT 701 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHEAST
OF WASECA...AND MOVING EAST AT 25 MPH.
HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
OWATONNA AROUND 720 PM CDT.
RICE LAKE STATE PARK AROUND 740 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE OWATONNA AIRPORT...MEDFORD...
CLINTON FALLS...MERTON AND MOLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4408 9345 4420 9346 4420 9304 4406 9304
TIME...MOT...LOC 0004Z 271DEG 21KT 4414 9336
HAIL...1.25IN
WIND...60MPH
$$2 follow-up statements
333
WWUS53 KMPX 190015
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
715 PM CDT MON AUG 18 2014
MNC161-190025-
/O.CAN.KMPX.SV.W.0083.000000T0000Z-140819T0045Z/
WASECA MN-
715 PM CDT MON AUG 18 2014
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASECA COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4408 9336 4420 9335 4420 9311 4420 9304
4419 9304 4406 9304
TIME...MOT...LOC 0015Z 271DEG 21KT 4414 9327
$$
MNC147-190045-
/O.CON.KMPX.SV.W.0083.000000T0000Z-140819T0045Z/
STEELE MN-
715 PM CDT MON AUG 18 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
STEELE COUNTY UNTIL 745 PM CDT...
AT 712 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
OF OWATONNA...AND MOVING EAST AT 25 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.
THE SEVERE THUNDERSTORM WILL BE NEAR...
RICE LAKE STATE PARK AROUND 740 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE CLINTON FALLS...MERTON AND
MOLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4408 9336 4420 9335 4420 9311 4420 9304
4419 9304 4406 9304
TIME...MOT...LOC 0015Z 271DEG 21KT 4414 9327
HAIL...1.00IN
WIND...60MPH
$$321
WWUS53 KMPX 190032
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
732 PM CDT MON AUG 18 2014
MNC147-190043-
/O.CAN.KMPX.SV.W.0083.000000T0000Z-140819T0045Z/
STEELE MN-
732 PM CDT MON AUG 18 2014
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN STEELE COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.
LAT...LON 4408 9336 4420 9335 4420 9311 4420 9304
4419 9304 4406 9304
TIME...MOT...LOC 0033Z 271DEG 21KT 4414 9312
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:31 PM CDT | Special Weather Statement | MPX | Freeborn | 44 min |
| Aug 18, 7:38 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 22 min |
| Aug 18, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 29 min |
| Aug 18, 8:43 PM CDT | Special Weather Statement | MPX | Freeborn | 47 min |
| Aug 18, 9:07 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn | 38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.