Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 86, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 2014, 9:07 PM CDT for Freeborn County, 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 18, 2014, 9:07 PM CDT (02:07 UTC)
- Expired
- Aug 18, 2014, 9:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 145 km from the middle of the area, began a volume at 02:07 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, 9:32 PM CDT | TSTM WND DMG | 1 S Albert Lea, MN | LARGE TREE BLOWN DOWN ON PICK-UP TRUCK. REPORTED VIA FACEBOOK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 18, 7:44 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.1 hours before the alert went out and 146 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.
982
WUUS53 KMPX 190207
SVRMPX
MNC047-190245-
/O.NEW.KMPX.SV.W.0086.140819T0207Z-140819T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
907 PM CDT MON AUG 18 2014
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 945 PM CDT
* AT 904 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTHWEST
OF ALBERT LEA...AND MOVING EAST AT 40 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...
MYRE BIG ISLAND STATE PARK AND HAYWARD AROUND 920 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE GLENVILLE...MYRTLE AND LONDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4350 9358 4368 9356 4366 9304 4362 9303
4350 9304 4349 9305 4349 9352
TIME...MOT...LOC 0208Z 275DEG 37KT 4358 9343
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
470
WWUS53 KMPX 190227
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
927 PM CDT MON AUG 18 2014
MNC047-190245-
/O.CON.KMPX.SV.W.0086.000000T0000Z-140819T0245Z/
FREEBORN MN-
927 PM CDT MON AUG 18 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
FREEBORN COUNTY UNTIL 945 PM CDT...
AT 925 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHEAST
OF MYRE BIG ISLAND STATE PARK...AND MOVING EAST AT 45 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
SOUTHEASTERN FREEBORN COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
LONDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4367 9335 4366 9304 4362 9303 4350 9304
4349 9305 4349 9340
TIME...MOT...LOC 0227Z 275DEG 37KT 4356 9316
HAIL...1.00IN
WIND...60MPH
$$161
WWUS53 KMPX 190235
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
935 PM CDT MON AUG 18 2014
MNC047-190246-
/O.EXP.KMPX.SV.W.0086.000000T0000Z-140819T0245Z/
FREEBORN MN-
935 PM CDT MON AUG 18 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FREEBORN COUNTY
WILL EXPIRE AT 945 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4367 9335 4366 9304 4362 9303 4350 9304
4349 9305 4349 9340
TIME...MOT...LOC 0236Z 275DEG 37KT 4355 9303
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:04 PM CDT | Severe Thunderstorm Warning | MPX | Steele, Waseca | 28 min |
| 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 |
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.