Alert archive / Minnesota / Tornado Warnings in 2009

Tornado Warning 24, NWS Twin Cities, MN

July 14, 2009Douglas County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 14, 2009, 5:13 PM CDT for Douglas County, Minnesota. It was in force for 47 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 14, 2009, 5:13 PM CDT (22:13 UTC)
Expired
Jul 14, 2009, 6:00 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 195 km from the middle of the area, began a volume at 22:15 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 14, 2:40 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 193 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 2009-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 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 2009-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
35 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1035 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 142213
TORMPX
MNC041-142300-
/O.NEW.KMPX.TO.W.0024.090714T2213Z-090714T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
513 PM CDT TUE JUL 14 2009

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 600 PM CDT

* AT 512 PM CDT...RADAR INDICATED A DEVELOPING TORNADO. THE MOST
  DANGEROUS PART OF THE STORM WAS 8 MILES SOUTH OF EVANSVILLE...OR
  ABOUT 5 MILES NORTHEAST OF HOFFMAN...AND MOVING EAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  EVANSVILLE...
  BRANDON...
  HOLMES...
  GARFIELD...
  LEAF VALLEY...
  ALEXANDRIA...
  CARLOS...
  MILTONA...

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.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

&&

LAT...LON 4610 9529 4583 9529 4581 9576 4605 9576
TIME...MOT...LOC 2214Z 260DEG 27KT 4590 9572

$$

LS
1 follow-up statement
000 
WWUS53 KMPX 142235
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT TUE JUL 14 2009

MNC041-142300-
/O.CON.KMPX.TO.W.0024.000000T0000Z-090714T2300Z/
DOUGLAS MN-
535 PM CDT TUE JUL 14 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR CENTRAL
DOUGLAS COUNTY...

AT 535 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO.  THE MOST DANGEROUS PART OF THE STORM
WAS LOCATED 4 MILES SOUTHWEST OF GARFIELD...AND MOVING EAST AT 20
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE...GARFIELD AND ALEXANDRIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
TUESDAY EVENING FOR SOUTHERN MINNESOTA.

&&

LAT...LON 4582 9568 4606 9562 4610 9529 4583 9529
TIME...MOT...LOC 2235Z 268DEG 16KT 4591 9556

$$

LS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 1:42 PM CDTSpecial Weather StatementMPXTodd78 min
Jul 14, 2:19 PM CDTSpecial Weather StatementMPXStearns41 min
Jul 14, 2:26 PM CDTSpecial Weather StatementMPXMorrison49 min
Jul 14, 3:06 PM CDTSpecial Weather StatementMPXPope39 min
Jul 14, 3:22 PM CDTSpecial Weather StatementMPXTodd38 min
Jul 14, 3:36 PM CDTSpecial Weather StatementMPXKandiyohi39 min
Jul 14, 3:47 PM CDTSevere Thunderstorm WarningMPXKandiyohi28 min
Jul 14, 3:49 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd43 min
Jul 14, 4:11 PM CDTSpecial Weather StatementMPXPope49 min
Jul 14, 4:23 PM CDTTornado WarningMPXPope, Swift37 min
Jul 14, 4:36 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns39 min
Jul 14, 4:44 PM CDTTornado WarningMPXKandiyohi, Meeker, Stearns46 min
Jul 14, 4:48 PM CDTTornado WarningMPXPope, Stearns42 min
Jul 14, 4:55 PM CDTSevere Thunderstorm WarningMPXDouglas50 min
Jul 14, 5:00 PM CDTTornado WarningMPXKandiyohi, Meeker, Stearns45 min
Jul 14, 5:32 PM CDTTornado WarningMPXStearns28 min
Jul 14, 5:38 PM CDTSpecial Weather StatementMPXTodd37 min
Jul 14, 5:48 PM CDTFlash Flood WarningMPXMorrison, Todd2 hr
Jul 14, 5:50 PM CDTSpecial Weather StatementMPXBenton25 min
Jul 14, 5:54 PM CDTSpecial Weather StatementMPXTodd66 min
Jul 14, 6:04 PM CDTSpecial Weather StatementMPXBenton26 min
Jul 14, 6:07 PM CDTSpecial Weather StatementMPXSherburne23 min
Jul 14, 6:11 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns52 min
Jul 14, 6:18 PM CDTTornado WarningMPXBenton, Sherburne, Stearns42 min
Jul 14, 6:39 PM CDTSpecial Weather StatementMPXMorrison51 min
Jul 14, 6:41 PM CDTAreal Flood WarningMPXBenton, Stearns4 hr
Jul 14, 6:57 PM CDTSpecial Weather StatementMPXSherburne48 min

Nearby

Tornado Warnings in Minnesota, 2009Every tornado warning in 2009Tornadoes in 2009

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.