Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 34, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2015, 4:26 AM CDT for Brown County, Nicollet County, Watonwan County, Minnesota. It was in force for 34 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
- Jun 20, 2015, 4:26 AM CDT (09:26 UTC)
- Expired
- Jun 20, 2015, 5:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brown County, MN, Nicollet County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 124 km from the middle of the area, began a volume at 09:29 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 |
|---|---|---|---|
| Jun 20, 3:18 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.4 hours before the alert went out and 122 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1595 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
377
WUUS53 KMPX 200926
SVRMPX
MNC015-103-165-201015-
/O.NEW.KMPX.SV.W.0034.150620T0926Z-150620T1015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
426 AM CDT SAT JUN 20 2015
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...
BROWN COUNTY IN SOUTH CENTRAL MINNESOTA...
NORTHWESTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 515 AM CDT
* AT 424 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR CLEMENTS TO BINGHAM LAKE...MOVING EAST AT 60
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
* SEVERE THUNDERSTORMS WILL BE NEAR...
BUTTERFIELD AROUND 435 AM CDT.
ST. JAMES AROUND 445 AM CDT.
MADELIA...LAFAYETTE AND LEWISVILLE AROUND 455 AM CDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
COBDEN...NEW ULM AIRPORT...ORMSBY...GROGAN...KLOSSNER...DARFUR...
ESSIG...ST JAMES AIRPORT...LA SALLE AND EVAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4385 9485 4411 9486 4411 9489 4446 9486
4446 9437 4385 9436
TIME...MOT...LOC 0924Z 257DEG 53KT 4436 9501 4391 9503
HAIL...<.75IN
WIND...60MPH
$$
JRB2 follow-up statements
398
WWUS53 KMPX 200947
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
447 AM CDT SAT JUN 20 2015
MNC015-103-165-201015-
/O.CON.KMPX.SV.W.0034.000000T0000Z-150620T1015Z/
WATONWAN MN-BROWN MN-NICOLLET MN-
447 AM CDT SAT JUN 20 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT
FOR WATONWAN...EASTERN BROWN AND NORTHWESTERN NICOLLET COUNTIES...
AT 446 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ST GEORGE TO ST. JAMES...MOVING EAST AT 60 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
THESE SEVERE STORMS WILL BE NEAR...
LAFAYETTE AND LEWISVILLE AROUND 455 AM CDT.
MADELIA AROUND 500 AM CDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE NEW
ULM AIRPORT...ORMSBY...GROGAN...KLOSSNER...DARFUR...ESSIG...ST JAMES
AIRPORT...LA SALLE...ODIN AND SOUTH BRANCH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4404 9486 4422 9476 4446 9471 4446 9437
4385 9436 4385 9485
TIME...MOT...LOC 0946Z 257DEG 53KT 4443 9460 4398 9462
HAIL...<.75IN
WIND...60MPH
$$
JRB500
WWUS53 KMPX 201000
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
500 AM CDT SAT JUN 20 2015
MNC015-103-165-201009-
/O.CAN.KMPX.SV.W.0034.000000T0000Z-150620T1015Z/
WATONWAN MN-BROWN MN-NICOLLET MN-
500 AM CDT SAT JUN 20 2015
...THE SEVERE THUNDERSTORM WARNING FOR WATONWAN...EASTERN BROWN AND
NORTHWESTERN NICOLLET COUNTIES IS CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT FOR
SOUTH CENTRAL MINNESOTA.
LAT...LON 4404 9486 4422 9476 4446 9471 4446 9437
4385 9436 4385 9485
TIME...MOT...LOC 0957Z 257DEG 53KT 4447 9438 4402 9440
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 10:40 PM CDT | Special Weather Statement | MPX | Martin | 50 min |
| Jun 20, 3:59 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood, Yellow Medicine | 46 min |
| Jun 20, 4:06 AM CDT | Special Weather Statement | MPX | Lac qui Parle, Yellow Medicine | 24 min |
| Jun 20, 4:14 AM CDT | Severe Thunderstorm Warning | MPX | Renville, Sibley | 46 min |
| Jun 20, 4:35 AM CDT | Special Weather Statement | MPX | Martin | 25 min |
| Jun 20, 4:44 AM CDT | Special Weather Statement | MPX | McLeod, Sibley | 31 min |
| Jun 20, 4:46 AM CDT | Special Weather Statement | MPX | Kandiyohi, Meeker, Sherburne, Wright | 119 min |
| Jun 20, 4:54 AM CDT | Special Weather Statement | MPX | Blue Earth, Nicollet | 36 min |
| Jun 20, 5:05 AM CDT | Special Weather Statement | MPX | Faribault | 40 min |
| Jun 20, 5:40 AM CDT | Special Weather Statement | MPX | Freeborn | 35 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.