Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 177, NWS Twin Cities, MN

July 11, 2008Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 2008, 5:44 PM CDT for Morrison County, Minnesota. It was in force for 46 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
Jul 11, 2008, 5:44 PM CDT (22:44 UTC)
Expired
Jul 11, 2008, 6:30 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 167 km from the middle of the area, began a volume at 22:43 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 11, 5:54 PM CDTHAIL 13 Se Motley, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 11, 2:26 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 165 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 2008-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 890 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 12:00Z on 2008-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 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
890 J/kg
Mixed-layer CIN
-362 J/kg
Mixed-layer LCL
1222 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
393 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 112244
SVRMPX
MNC097-112330-
/O.NEW.KMPX.SV.W.0177.080711T2244Z-080711T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
544 PM CDT FRI JUL 11 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 543 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO BASEBALL SIZE AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM 3 MILES NORTHWEST OF MOTLEY TO 16 MILES
  SOUTHWEST OF RANDALL...AND MOVING EAST AT 35 MPH.

* SOME LOCATIONS INCLUDE...
  MOTLEY...
  CUSHING...
  RANDALL...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER LINES.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHERN MINNESOTA.

LAT...LON 4632 9457 4633 9444 4630 9435 4622 9438
      4617 9436 4616 9424 4599 9427 4597 9464
      4637 9465
TIME...MOT...LOC 2244Z 270DEG 19KT 4636 9470 4599 9479

$$
1 follow-up statement
000 
WWUS53 KMPX 112312
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
612 PM CDT FRI JUL 11 2008

MNC097-112330-
/O.CON.KMPX.SV.W.0177.000000T0000Z-080711T2330Z/
MORRISON MN-
612 PM CDT FRI JUL 11 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHWESTERN MORRISON COUNTY...

AT 609 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF
BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE SEVERE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES EAST OF
MOTLEY TO 8 MILES SOUTHWEST OF RANDALL...AND MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE CUSHING...RANDALL AND MOTLEY.

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHERN MINNESOTA.

LAT...LON 4632 9457 4633 9444 4630 9435 4622 9438
      4617 9436 4616 9424 4599 9427 4597 9464
      4637 9465
TIME...MOT...LOC 2312Z 270DEG 19KT 4636 9449 4599 9458

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 11:04 PM CDTSevere Thunderstorm WarningMPXDouglas41 min
Jul 10, 11:20 PM CDTSevere Thunderstorm WarningMPXPope, Stevens, Swift55 min
Jul 10, 11:40 PM CDTSevere Thunderstorm WarningMPXDouglas, Morrison, Pope, Stearns, Todd65 min
Jul 11, 12:16 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift59 min
Jul 11, 12:52 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns53 min
Jul 11, 1:06 AM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Meeker, Renville, Swift, Yellow Medicine54 min
Jul 11, 1:10 AM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs, Morrison65 min
Jul 11, 4:45 PM CDTTornado WarningMPXTodd30 min
Jul 11, 5:13 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Pope, Swift47 min
Jul 11, 5:15 PM CDTSevere Thunderstorm WarningMPXTodd45 min
Jul 11, 5:48 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns57 min
Jul 11, 6:28 PM CDTTornado WarningMPXKandiyohi, Meeker47 min
Jul 11, 6:36 PM CDTTornado WarningMPXKandiyohi, Meeker, Stearns54 min
Jul 11, 6:40 PM CDTTornado WarningMPXMeeker, Stearns65 min
Jul 11, 6:50 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Sibley55 min
Jul 11, 6:51 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs, Morrison54 min
Jul 11, 6:54 PM CDTTornado WarningMPXRenville36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008Every severe thunderstorm warning in 2008

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.