Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 84, NWS Twin Cities, MN

August 7, 2010Douglas County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 7, 2010, 7:53 PM CDT for Douglas County, Minnesota. It was in force for 52 min. 13 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 7, 2010, 7:53 PM CDT (00:53 UTC)
Expired
Aug 7, 2010, 8:45 PM CDT
In force
52 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 197 km from the middle of the area, began a volume at 00:55 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
Aug 7, 8:03 PM CDTTORNADO3 W Evansville, MNAN NWS STORM DAMAGE SURVEY FROM THE OFFICE IN GRAND FORKS DETERMINED THAT AN EF-1 TORNADO TOUCHED DOWN IN GRANT COUNTY AND PRODUCED INTERMITTENT DAMAGE EASTWARD INTO DOUGLAS COUNTY. DAMAGE IN DOUGLAS COUNTY WAS TREE DAMAGE. TOTAL PATH LENGTH WAS ABOUT 19 MILES
Aug 7, 8:05 PM CDTTORNADO3 W Evansville, MN
Aug 7, 8:12 PM CDTTSTM WND DMGEvansville, MNMOST OF THE CITY LOST POWER.
Aug 7, 8:17 PM CDTTSTM WND DMG3 N Brandon, MNTREES AND POWER LINES DOWN.
Aug 7, 8:18 PM CDTTORNADO4 S Evansville, MNA BRIEF TORNADO TOUCHDOWN WAS REPORTED BY THE PUBLIC SOUTH OF EVANSVILLE, NEAR INTERSTATE 94.
Aug 7, 8:20 PM CDTHAIL 11 E Brandon, MN
Aug 7, 8:23 PM CDTFUNNEL CLOUD13 N Alexandria, MNFUNNEL CLOUD SIGHTED OVER NORTH END OF LAKE MILTONA.
Aug 7, 8:23 PM CDTFUNNEL CLOUD5 Nw Alexandria, MNOCCURRED 8 MILES SOUTHWEST OF LAKE MILTONA.
Aug 7, 8:26 PM CDTFUNNEL CLOUD7 W Alexandria, MN
Aug 7, 8:27 PM CDTFUNNEL CLOUD7 Nw Alexandria, MN
Aug 7, 8:37 PM CDTFUNNEL CLOUDAlexandria, MNOCCURRED IN NORTHERN PORTION OF CITY.
Aug 7, 8:41 PM CDTHAIL 1Garfield, MN
Aug 7, 8:46 PM CDTTSTM WND GST 70Carlos, 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
Aug 7, 5:27 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.9 hours before the alert went out and 195 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 2010-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2210 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 00:00Z on 2010-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
2210 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
1.8
Supercell composite
12.7

Open this sounding in Storm Lab

The text

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

105 
WFUS53 KMPX 080053
TORMPX
MNC041-080145-
/O.NEW.KMPX.TO.W.0084.100808T0053Z-100808T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
753 PM CDT SAT AUG 7 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 845 PM CDT

* AT 751 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 6 MILES WEST OF
  MELBY...OR ABOUT 5 MILES NORTH OF ERDAHL...AND MOVING EAST AT 30
  MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  ALEXANDRIA...
  MELBY...
  EVANSVILLE...
  BRANDON...
  MILLERVILLE...
  FORADA...
  MILTONA...
  CARLOS...
  ROSE CITY...
  OSAKIS...
  HOLMES...
  INTERSTATE 94 

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR
CENTRAL MINNESOTA.

&&

LAT...LON 4611 9515 4576 9513 4576 9544 4585 9577
      4595 9579 4610 9577 4611 9575 4612 9558
TIME...MOT...LOC 0052Z 276DEG 27KT 4607 9584

$$
3 follow-up statements
587 
WWUS53 KMPX 080101
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
801 PM CDT SAT AUG 7 2010

MNC041-080145-
/O.CON.KMPX.TO.W.0084.000000T0000Z-100808T0145Z/
DOUGLAS MN-
801 PM CDT SAT AUG 7 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR DOUGLAS COUNTY UNTIL 845
PM CDT...

AT 755 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR ERDAHL...OR 20 MILES SOUTHEAST OF FERGUS FALLS...
MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  ALEXANDRIA...MELBY...EVANSVILLE...BRANDON...MILLERVILLE...
  GARFIELD...CARLOS...MILTONA...OSAKIS...FORADA...ROSE CITY...
  HOLMES...LEAF VALLEY...BELLE RIVER AND NELSON.

IN ADDITION...GOLF BALL SIZE HAIL IS POSSIBLE WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4611 9515 4576 9513 4576 9544 4585 9577
      4595 9579 4610 9577 4611 9575 4612 9558
TIME...MOT...LOC 0059Z 283DEG 27KT 4604 9580

$$
167 
WWUS53 KMPX 080124
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
824 PM CDT SAT AUG 7 2010

MNC041-080145-
/O.CON.KMPX.TO.W.0084.000000T0000Z-100808T0145Z/
DOUGLAS MN-
824 PM CDT SAT AUG 7 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR DOUGLAS COUNTY UNTIL 845
PM CDT...

AT 819 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR EVANSVILLE...OR 15 MILES NORTHWEST OF ALEXANDRIA...
MOVING EAST AT 20 MPH.

AT 818 PM CDT...THE PUBLIC REPORTED A TORNADO 4 MILES SOUTH OF 
EVANSVILLE...WHICH IS CLOSE TO INTERSTATE 94.

LOCATIONS IMPACTED INCLUDE...
  ALEXANDRIA...MILLERVILLE...BRANDON...GARFIELD...CARLOS...FORADA...
  MILTONA...OSAKIS...ROSE CITY...LEAF VALLEY...HOLMES...NELSON AND
  BELLE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4611 9515 4576 9513 4576 9544 4585 9577
      4595 9579 4610 9577 4611 9575 4612 9558
TIME...MOT...LOC 0123Z 289DEG 16KT 4596 9564

$$
606 
WWUS53 KMPX 080135
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
835 PM CDT SAT AUG 7 2010

MNC041-080145-
/O.CON.KMPX.TO.W.0084.000000T0000Z-100808T0145Z/
DOUGLAS MN-
835 PM CDT SAT AUG 7 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR DOUGLAS COUNTY UNTIL 845
PM CDT...

AT 833 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR GARFIELD...OR 8 MILES WEST OF ALEXANDRIA...MOVING
SOUTHEAST AT 30 MPH.

AT 818 PM CDT...THE PUBLIC REPORTED A TORNADO 4 MILES SOUTH OF 
EVANSVILLE...WHICH IS CLOSE TO INTERSTATE 94.

LOCATIONS IMPACTED INCLUDE...
  ALEXANDRIA...MILTONA...FORADA...CARLOS...OSAKIS...ROSE CITY...
  HOLMES...NELSON AND BELLE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4610 9515 4576 9513 4576 9544 4585 9577
      4593 9577 4595 9579 4611 9551 4611 9516
TIME...MOT...LOC 0134Z 301DEG 27KT 4591 9553

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 7:08 PM CDTSpecial Weather StatementMPXDouglas, Todd67 min
Aug 7, 7:45 PM CDTSevere Thunderstorm WarningMPXDouglas60 min
Aug 7, 8:05 PM CDTSpecial Weather StatementMPXMorrison55 min
Aug 7, 8:19 PM CDTTornado WarningMPXTodd38 min
Aug 7, 8:39 PM CDTTornado WarningMPXDouglas, Pope, Stearns, Todd51 min
Aug 7, 8:53 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison36 min
Aug 7, 9:23 PM CDTSevere Thunderstorm WarningMPXMorrison, Stearns, Todd52 min
Aug 7, 9:59 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison61 min
Aug 7, 10:09 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns, Wright66 min
Aug 7, 10:17 PM CDTAreal Flood AdvisoryMPXKanabec, Mille Lacs4 hr
Aug 7, 10:19 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs56 min
Aug 7, 10:39 PM CDTTornado WarningMPXIsanti, Kanabec, Mille Lacs36 min
Aug 7, 10:55 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti65 min
Aug 7, 11:34 PM CDTSevere Thunderstorm WarningMPXAnoka, Sherburne56 min
Aug 7, 11:58 PM CDTSevere Thunderstorm WarningMPXSherburne47 min
Aug 8, 12:45 AM CDTSpecial Weather StatementMPXAnoka, Carver, Chisago, Dakota, Hennepin, Isanti and 8 more90 min
Aug 8, 12:47 AM CDTSevere Thunderstorm WarningMPXWashington43 min
Aug 8, 1:43 AM CDTSevere Thunderstorm WarningMPXWashington32 min
Aug 8, 4:46 PM CDTSpecial Weather StatementMPXChippewa, Lac qui Parle104 min
Aug 8, 6:07 PM CDTSpecial Weather StatementMPXHennepin38 min
Aug 8, 6:37 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington53 min
Aug 8, 6:55 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Ramsey19 min

Nearby

Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes in 2010

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.