Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 7, 2015, 1:26 PM CDT for Martin County, Minnesota. It was in force for 34 min. 3 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
- Apr 7, 2015, 1:26 PM CDT (18:26 UTC)
- Expired
- Apr 7, 2015, 2:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Martin County, MN
The radar
The Minneapolis radar (KMPX), 144 km from the middle of the area, began a volume at 18:26 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 |
|---|---|---|---|
| Apr 7, 1:35 PM CDT | HAIL 0.75 | Fairmont, MN | PICTURE OF PENNY-SIZE HAIL VIA TWITTER |
| Apr 7, 1:45 PM CDT | HAIL 1 | 2 N Fairmont, MN | STARTED AS PEA-SIZE, BUT INCREASED TO QUARTER-SIZE. |
| Apr 7, 1:50 PM CDT | HAIL 1 | 1 E Fairmont, MN | MEASURED BY LAW ENFORCEMENT. |
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 12:00Z, 6.4 hours before the alert went out and 143 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 546 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
850
WUUS53 KMPX 071826
SVRMPX
MNC091-071900-
/O.NEW.KMPX.SV.W.0002.150407T1826Z-150407T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
126 PM CDT TUE APR 7 2015
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 200 PM CDT
* AT 126 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED OVER
FAIRMONT...AND MOVING NORTHEAST AT 40 MPH.
* THIS SEVERE THUNDERSTORM WILL BE NEAR...
TRUMAN AROUND 145 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
IMOGENE...GRANADA...NORTHROP AND FAIRMONT AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 4361 9461 4385 9446 4385 9426 4384 9425
4363 9425 4350 9441
TIME...MOT...LOC 1826Z 216DEG 37KT 4362 9445
$$2 follow-up statements
796
WWUS53 KMPX 071839
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
139 PM CDT TUE APR 7 2015
MNC091-071900-
/O.CON.KMPX.SV.W.0002.000000T0000Z-150407T1900Z/
MARTIN MN-
139 PM CDT TUE APR 7 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN MARTIN COUNTY...
AT 139 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED OVER
GRANADA...OR 8 MILES NORTHEAST OF FAIRMONT...MOVING NORTHEAST AT 40
MPH.
THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MARTIN COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
IMOGENE...GRANADA...NORTHROP AND FAIRMONT AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 4368 9452 4385 9446 4385 9426 4384 9425
4363 9425 4362 9438
TIME...MOT...LOC 1839Z 216DEG 34KT 4372 9435
$$260
WWUS53 KMPX 071848
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
148 PM CDT TUE APR 7 2015
MNC091-071900-
/O.CON.KMPX.SV.W.0002.000000T0000Z-150407T1900Z/
MARTIN MN-
148 PM CDT TUE APR 7 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN MARTIN COUNTY...
AT 148 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR
WINNEBAGO...OR 13 MILES NORTHEAST OF FAIRMONT...MOVING NORTHEAST AT
35 MPH.
THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MARTIN COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
GRANADA AND NORTHROP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 4372 9443 4385 9446 4385 9426 4384 9425
4368 9425 4368 9436
TIME...MOT...LOC 1848Z 215DEG 32KT 4378 9429
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 1:12 PM CDT | Special Weather Statement | MPX | Blue Earth, Brown, Faribault, Martin, Watonwan | 63 min |
| Apr 7, 1:59 PM CDT | Special Weather Statement | MPX | Blue Earth | 46 min |
| Apr 7, 2:08 PM CDT | Special Weather Statement | MPX | Freeborn | 52 min |
| Apr 7, 2:49 PM CDT | Special Weather Statement | MPX | Steele | 26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.