Alert archive / Minnesota / Tornado Warnings in 2011

Tornado Warning 44, NWS Twin Cities, MN

August 1, 2011Douglas County, Pope County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 1, 2011, 7:13 AM CDT for Douglas County, Pope County, Minnesota. It was in force for 47 min. 3 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
Aug 1, 2011, 7:13 AM CDT (12:13 UTC)
Expired
Aug 1, 2011, 8:00 AM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Douglas County, MN, Pope County, MN

The radar

The Minneapolis radar (KMPX), 177 km from the middle of the area, began a volume at 12:16 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
Aug 1, 7:14 AM CDTHAIL 0.753 Se Holmes, MN
Aug 1, 7:30 AM CDTTSTM WND DMGGlenwood, MNPOWER LINES DOWN...LARGE TREES UPROOTED...WIDESPREAD TREE DAMAGE AROUND TOWN. TIME ESTIMATED.
Aug 1, 7:45 AM CDTTSTM WND DMGHolmes, MNNUMEROUS TREES AND POWER LINES DOWN ACROSS SOUTHERN AND WESTERN DOUGLAS COUNTY...MORE REPORTS WILL FOLLOW.

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
Aug 1, 4:57 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 0.2 hours before the alert went out and 174 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 2011-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2974 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 2011-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
2974 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

326 
WFUS53 KMPX 011213
TORMPX
MNC041-121-011300-
/O.NEW.KMPX.TO.W.0044.110801T1213Z-110801T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
713 AM CDT MON AUG 1 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHERN POPE COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 800 AM CDT

* AT 712 AM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 4
  MILES SOUTHEAST OF HOLMES...OR ABOUT 5 MILES NORTH OF LOWRY. RADAR
  SHOWED THE SEVERE STORM MOVING EAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  GLENWOOD...
  KENSINGTON...
  LOWRY...
  LONG BEACH...
  FORADA...
  HOLMES...
  FARWELL...
  VILLARD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 4584 9516 4554 9535 4572 9575 4589 9562
TIME...MOT...LOC 1213Z 281DEG 14KT 4578 9550

$$
1 follow-up statement
749 
WWUS53 KMPX 011245
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
745 AM CDT MON AUG 1 2011

MNC041-121-011300-
/O.CON.KMPX.TO.W.0044.000000T0000Z-110801T1300Z/
DOUGLAS MN-POPE MN-
745 AM CDT MON AUG 1 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL POPE AND
SOUTH CENTRAL DOUGLAS COUNTIES UNTIL 800 AM CDT...

AT 741 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR GLENWOOD...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  VILLARD.

LAT...LON 4582 9518 4554 9535 4565 9558 4586 9539
TIME...MOT...LOC 1245Z 286DEG 13KT 4568 9537

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 6:25 AM CDTAreal Flood AdvisoryMPXDouglas, Pope, Stevens6 hr
Aug 1, 6:45 AM CDTSevere Thunderstorm WarningMPXDouglas, Pope, Stevens, Todd45 min
Aug 1, 7:27 AM CDTSevere Thunderstorm WarningMPXDouglas, Kandiyohi, Morrison, Pope, Stearns, Todd63 min
Aug 1, 8:13 AM CDTAreal Flood AdvisoryMPXKandiyohi, Meeker, Pope, Stearns3 hr
Aug 1, 9:00 AM CDTSpecial Weather StatementMPXBenton, Sherburne, Stearns, Wright60 min
Aug 1, 9:39 AM CDTFlash Flood WarningMPXDouglas, Pope3 hr
Aug 1, 9:44 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker46 min
Aug 1, 10:53 AM CDTSevere Thunderstorm WarningMPXBenton, Kandiyohi, Stearns67 min
Aug 1, 11:09 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns66 min
Aug 1, 11:53 AM CDTSevere Thunderstorm WarningMPXSherburne, Stearns, Wright67 min
Aug 1, 12:03 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Meeker, Renville, Sibley57 min
Aug 1, 12:45 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin45 min
Aug 1, 1:01 PM CDTAreal Flood AdvisoryMPXCarver, Dakota, Hennepin, Ramsey, Scott3 hr
Aug 1, 1:18 PM CDTSevere Thunderstorm WarningMPXDakota, Le Sueur, Rice, Scott, Sibley57 min
Aug 1, 1:25 PM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey, Washington65 min
Aug 1, 2:02 PM CDTSevere Thunderstorm WarningMPXGoodhue, Le Sueur, Rice, Steele, Waseca58 min
Aug 1, 3:04 PM CDTSevere Thunderstorm WarningMPXGoodhue37 min
Aug 1, 3:54 PM CDTSpecial Weather StatementMPXAnoka, Chisago, Isanti, Mille Lacs51 min

Nearby

Tornado Warnings in Minnesota, 2011Every tornado warning in 2011Tornadoes in 2011

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.