Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 225, NWS Twin Cities, MN

July 21, 2005Blue Earth County, Faribault County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 21, 2005, 4:15 AM CDT for Blue Earth County, Faribault County, Minnesota. It was in force for 60 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 21, 2005, 4:15 AM CDT (09:15 UTC)
Expired
Jul 21, 2005, 5:15 AM CDT
In force
60 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Blue Earth County, MN, Faribault County, MN

The radar

The Minneapolis radar (KMPX), 117 km from the middle of the area, began a volume at 09:18 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.

IssuedProductOfficeLasted
Jul 21, 4:05 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.3 hours before the alert went out and 116 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 2005-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1056 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 00:00Z on 2005-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 square meters per square second.19395878Sfc1 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
1056 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1616 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 210916
SVRMPX
MNC013-043-211015-
/O.NEW.KMPX.SV.W.0225.050721T0915Z-050721T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
415 AM CDT THU JUL 21 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 515 AM CDT

* AT 414 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS
  LOCATED 13 MILES NORTHWEST OF BLUE EARTH...OR ABOUT 8 MILES
  NORTHEAST OF FAIRMONT...AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLUE EARTH...
  MANKATO...
  LAKE CRYSTAL...
  WINNEBAGO...
  WELLS...
  GOOD THUNDER...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4413 9435 4386 9436 4386 9423 4351 9424
      4351 9377 4420 9380

$$
1 follow-up statement
000 
WWUS53 KMPX 211015
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
513 AM CDT THU JUL 21 2005

MNC013-043-211023-
/O.EXP.KMPX.SV.W.0225.000000T0000Z-050721T1015Z/
BLUE EARTH MN-FARIBAULT MN-
513 AM CDT THU JUL 21 2005

...THE SEVERE THUNDERSTORM WARNING FOR FARIBAULT AND BLUE EARTH
COUNTIES WILL EXPIRE AT 515 AM CDT...

AT 513 AM...THUNDERSTORMS WERE OVER FAR EASTERN BLUE EARTH COUNTY... 
BUT HAD WEAKENED BELOW SEVERE LIMITS. OTHER THUNDERSTORMS HAD MOVED 
EAST OF FARIBAULT COUNTY. HENCE...THE SEVERE THUNDERSTORM WARNING 
WILL BE ALLOWED TO EXPIRE AT 515 AM. 

LAT...LON 4413 9435 4386 9436 4386 9423 4351 9424
      4351 9377 4420 9380

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 3:40 AM CDTSevere Thunderstorm WarningMPXMartin, Watonwan65 min
Jul 21, 4:45 AM CDTSevere Thunderstorm WarningMPXFreeborn, Waseca60 min
Jul 21, 5:40 AM CDTSevere Thunderstorm WarningMPXSteele40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.