Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 431, NWS Twin Cities, MN

October 4, 2005Blue Earth County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 4, 2005, 6:01 PM CDT for Blue Earth County, Minnesota. It was in force for 59 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
Oct 4, 2005, 6:01 PM CDT (23:01 UTC)
Expired
Oct 4, 2005, 7:00 PM CDT
In force
59 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Blue Earth County, MN

The radar

The Minneapolis radar (KMPX), 95 km from the middle of the area, began a volume at 23:03 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

TimeReportWhereRemark
Oct 4, 6:10 PM CDTHAIL 0.882 W Mapleton, MNDIME TO NICKEL SIZE HAIL REPORTED.

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, 11.0 hours before the alert went out and 94 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 12:00Z on 2005-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1230 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2005-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
1230 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
492 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 042302
SVRMPX
MNC013-050000-
/O.NEW.KMPX.SV.W.0431.051004T2301Z-051005T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
601 PM CDT TUE OCT 4 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 700 PM CDT

* AT 558 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS
  LOCATED 23 MILES SOUTH OF MANKATO...OR ABOUT 14 MILES NORTH OF BLUE
  EARTH...AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MANKATO...
  MAPLETON...
  VERNON CENTER...
  GOOD THUNDER...
  PEMBERTON...
  AMBOY... 

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4386 9422 4386 9378 4424 9377 4424 9398
      4418 9401 4419 9419

$$
1 follow-up statement
000 
WWUS53 KMPX 042359
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
658 PM CDT TUE OCT 4 2005

MNC013-050010-
/O.EXP.KMPX.SV.W.0431.000000T0000Z-051005T0000Z/
BLUE EARTH MN-
658 PM CDT TUE OCT 4 2005

...THE SEVERE THUNDERSTORM WARNING FOR BLUE EARTH COUNTY WILL EXPIRE
AT 700 PM CDT...

THUNDERSTORMS ARE NO LONGER SEVERE...THEREFORE THE SEVERE 
THUNDERSTORM WARNING WAS ALLOWED TO EXPIRE.


LAT...LON 4386 9422 4386 9378 4424 9377 4424 9398
      4418 9401 4419 9419

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 3:19 PM CDTSevere Thunderstorm WarningMPXFreeborn56 min
Oct 4, 4:32 PM CDTSevere Thunderstorm WarningMPXMartin58 min
Oct 4, 5:08 PM CDTSevere Thunderstorm WarningMPXFaribault67 min
Oct 4, 5:30 PM CDTSevere Thunderstorm WarningMPXMartin60 min
Oct 4, 5:35 PM CDTSevere Thunderstorm WarningMPXFreeborn55 min
Oct 4, 6:26 PM CDTSevere Thunderstorm WarningMPXCarver35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2005Every severe thunderstorm warning in 2005

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.