Alert archive / Minnesota / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 9, NWS Twin Cities, MN

May 25, 20108 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 25, 2010, 1:13 AM CDT for 8 counties in Minnesota. It was in force for 32 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
May 25, 2010, 1:13 AM CDT (06:13 UTC)
Expired
May 25, 2010, 1:45 AM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Blue Earth County, MN, Brown County, MN, Martin County, MN, Nicollet County, MN, Redwood County, MN, Renville County, MN, Sibley County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 136 km from the middle of the area, began a volume at 06:13 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.2 hours before the alert went out and 134 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2010-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 633 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2010-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
633 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
2674 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.1

Open this sounding in Storm Lab

The text

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

678 
WUUS53 KMPX 250613
SVRMPX
MNC013-015-091-103-127-129-143-165-250645-
/O.NEW.KMPX.SV.W.0009.100525T0613Z-100525T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
113 AM CDT TUE MAY 25 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL RENVILLE COUNTY IN CENTRAL MINNESOTA...
  SOUTHWESTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...
  EAST CENTRAL REDWOOD COUNTY IN SOUTHWEST MINNESOTA...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA...
  WESTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...
  WESTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...
  MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 145 AM CDT

* AT 108 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...  
  CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60 MPH. THESE STORMS    
  WERE LOCATED ALONG A LINE EXTENDING FROM FRANKLIN TO 4 MILES NORTH 
  OF COMFREY TO 7 MILES SOUTHWEST OF DUNNELL...AND MOVING EAST AT 50 
  MPH.  

LOCATIONS IN THE WARNING INCLUDE...
  ST JAMES...
  NEW ULM...
  FAIRMONT...
  DUNNELL...
  ODIN...
  FAIRFAX...
  SLEEPY EYE...
  SHERBURN...
  TRIMONT...
  ORMSBY...
  CEYLON...
  WELCOME...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4351 9487 4410 9487 4410 9499 4463 9499
      4452 9452 4417 9433 4349 9432 4349 9472
TIME...MOT...LOC 0612Z 270DEG 43KT 4454 9484 4417 9484
          4352 9484
WIND...HAIL 60MPH 0.75IN

$$

BAP

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 11:25 PM CDTSpecial Weather StatementMPXLac qui Parle, Yellow Medicine35 min
May 25, 2:01 PM CDTSevere Thunderstorm WarningMPXGoodhue28 min
May 25, 5:51 PM CDTSevere Thunderstorm WarningMPXRice39 min
May 25, 6:42 PM CDTSpecial Weather StatementMPXGoodhue48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2010Every severe thunderstorm warning in 2010

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.