Alert archive / Minnesota / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 150, NWS Twin Cities, MN

July 31, 2006Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 31, 2006, 5:54 PM CDT for Douglas County, Minnesota. It was in force for 36 min. 2 reports 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
Jul 31, 2006, 5:54 PM CDT (22:54 UTC)
Expired
Jul 31, 2006, 6:30 PM CDT
In force
36 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 182 km from the middle of the area, began a volume at 22:55 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
Jul 31, 6:04 PM CDTTSTM WND DMGAlexandria, MNLARGE TREE LIMB DOWN ACROSS POWER LINE.
Jul 31, 6:10 PM CDTTSTM WND DMG2 Se Miltona, MNTREES DOWN ACROSS ROAD.

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, 10.9 hours before the alert went out and 180 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 2006-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 969 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 2006-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 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
969 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
1885 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 312255
SVRMPX
MNC041-312330-
/O.NEW.KMPX.SV.W.0150.060731T2254Z-060731T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
554 PM CDT MON JUL 31 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 551 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...   
  CAPABLE OF PRODUCING PENNY SIZE HAIL AND 65 MPH WINDS.   THIS      
  STORM WAS LOCATED NEAR ALEXANDRIA...OR ABOUT 5 MILES NORTH OF      
  ALEXANDRIA...AND MOVING NORTHEAST AT 30 MPH. ANOTHER STRONG        
  THUNDERSTORM...CAPABLE OF PRODUCING 55 MPH WINDS IS LOCATED JUST   
  SOUTHWEST OF ALEXANDRIA.

* LOCATIONS IMPACTED INCLUDE...
  OSAKIS...
  ALEXANDRIA...
  CARLOS...
  MILTONA...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4601 9542 4578 9541 4578 9515 4610 9517

$$

KAT
1 follow-up statement
000 
WWUS53 KMPX 312329
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
628 PM CDT MON JUL 31 2006

MNC041-312338-
/O.EXP.KMPX.SV.W.0150.000000T0000Z-060731T2330Z/
DOUGLAS MN-
628 PM CDT MON JUL 31 2006

...THE SEVERE THUNDERSTORM WARNING FOR DOUGLAS COUNTY EXPIRES AT 630
PM CDT...

AT 604 PM CDT...LARGE TREE LIMBS WERE REPORTED DOWN IN THE CITY OF 
ALEXANDRIA.

SEVERE STORMS HAD MOVED OUT OF THE COUNTY. HOWEVER...MORE
THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN ALERT FOR POSSIBLE
ADDITIONAL WARNINGS.

LAT...LON 4601 9542 4578 9541 4578 9515 4610 9517

$$

KAT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 5:28 PM CDTSevere Thunderstorm WarningMPXPope, Stevens, Swift62 min
Jul 31, 6:11 PM CDTSevere Thunderstorm WarningMPXTodd64 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2006Every severe thunderstorm warning in 2006

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.