Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 234, NWS Twin Cities, MN

July 25, 2012Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 25, 2012, 1:23 AM CDT for Todd County, Minnesota. It was in force for 37 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: Jul 25, 2012, 1:23 AM CDT (06:23 UTC)
Expired: Jul 25, 2012, 2:00 AM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Todd County, MN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 24, 9:08 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.4 hours before the alert went out and 187 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1518 J/kg
Mixed-layer CIN: -135 J/kg
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 232 m²/s²
0-3 km storm-relative helicity: 392 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 17.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

948 
WUUS53 KMPX 250623
SVRMPX
MNC153-250700-
/O.NEW.KMPX.SV.W.0234.120725T0623Z-120725T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
ISSUED BY NATIONAL WEATHER SERVICE DULUTH MN
123 AM CDT WED JUL 25 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN TODD COUNTY IN CENTRAL MINNESOTA...

* UNTIL 200 AM CDT

* AT 122 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 36 MILES NORTH OF WADENA TO 14 MILES NORTHWEST OF WADENA TO
  VINING...AND MOVING EAST AT 50 MPH. PENNY SIZE HAIL MAY ALSO
  ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  HEWITT...BERTHA...EAGLE BEND...CLARISSA...STAPLES AND BROWERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER 
HOUR...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 4636 9470 4636 9466 4635 9465 4628 9464
      4607 9468 4611 9516 4636 9517 4637 9516
      4638 9473
TIME...MOT...LOC 0622Z 284DEG 43KT 4695 9521 4659 9528
          4623 9549
WIND...HAIL 60MPH 0.75IN

$$
 MILLER

2 follow-up statements

837 
WWUS53 KMPX 250639
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
ISSUED BY NATIONAL WEATHER SERVICE DULUTH MN
139 AM CDT WED JUL 25 2012

MNC153-250700-
/O.CON.KMPX.SV.W.0234.000000T0000Z-120725T0700Z/
TODD MN-
139 AM CDT WED JUL 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN TODD
COUNTY UNTIL 200 AM CDT...

AT 139 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM 32 MILES NORTH OF WADENA TO WADENA TO PARKERS PRAIRIE...MOVING 
EAST AT 45 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING 
WINDS.

LOCATIONS IMPACTED INCLUDE...
  HEWITT...BERTHA...EAGLE BEND...STAPLES...CLARISSA AND BROWERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...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 4636 9470 4636 9466 4635 9465 4628 9464
      4607 9468 4611 9516 4636 9517 4637 9516
      4638 9473
TIME...MOT...LOC 0639Z 289DEG 41KT 4688 9497 4653 9506
          4617 9528
WIND...HAIL 60MPH 0.75IN

$$
 MILLER

209 
WWUS53 KMPX 250650
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
ISSUED BY NATIONAL WEATHER SERVICE DULUTH MN
150 AM CDT WED JUL 25 2012

MNC153-250700-
/O.CON.KMPX.SV.W.0234.000000T0000Z-120725T0700Z/
TODD MN-
150 AM CDT WED JUL 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN TODD
COUNTY UNTIL 200 AM CDT...

AT 150 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 31 MILES NORTHEAST OF WADENA TO 7 MILES NORTHEAST OF VERNDALE TO
6 MILES SOUTHWEST OF BERTHA...MOVING EAST AT 45 MPH. PENNY SIZE HAIL
MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  EAGLE BEND...STAPLES...CLARISSA AND BROWERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...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 4636 9470 4636 9466 4635 9465 4628 9464
      4607 9468 4611 9516 4636 9517 4637 9516
      4638 9473
TIME...MOT...LOC 0650Z 290DEG 39KT 4683 9481 4648 9491
          4620 9513
WIND...HAIL 60MPH 0.75IN

$$
 MILLER

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 25, 2:00 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	45 min
Jul 25, 6:43 PM CDT	Special Weather Statement	MPX	Freeborn	47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.