Alert archive / Minnesota / Tornado Warnings in 2008

Tornado Warning 21, NWS Duluth, MN

September 26, 2008Itasca County, Koochiching County, Minnesota

NWS Duluth, MN issued this tornado warning at Sep 26, 2008, 4:49 AM CDT for Itasca County, Koochiching County, Minnesota. It was in force for 56 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
Sep 26, 2008, 4:49 AM CDT (09:49 UTC)
Expired
Sep 26, 2008, 5:45 AM CDT
In force
56 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon

Counties Itasca County, MN, Koochiching County, MN

The radar

The Duluth radar (KDLH), 151 km from the middle of the area, began a volume at 09:53 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 nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 9.8 hours before the alert went out and 84 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, International Fa, MN at 00:00Z on 2008-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 181 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, International Fa, MN at 00:00Z on 2008-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
181 J/kg
Mixed-layer CIN
-221 J/kg
Mixed-layer LCL
819 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
242 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDLH 260949
TORDLH
MNC061-071-261045-
/O.NEW.KDLH.TO.W.0021.080926T0949Z-080926T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DULUTH MN
449 AM CDT FRI SEP 26 2008

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL KOOCHICHING COUNTY IN NORTH CENTRAL MINNESOTA...
  NORTHERN ITASCA COUNTY IN NORTH CENTRAL MINNESOTA...

* UNTIL 545 AM CDT

* AT 443 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR OSLUND...OR
  40 MILES NORTHWEST OF GRAND RAPIDS...MOVING NORTHEAST AT 30 MPH.

* THIS POSSIBLE TORNADO WILL BE NEAR...
  SPRING LAKE BY 455 AM...
  BIGFORK BY 520 AM...
  EFFIE BY 525 AM...
  CRAIGVILLE BY 530 AM...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4804 9329 4774 9309 4759 9402 4776 9417
TIME...MOT...LOC 0948Z 247DEG 26KT 4771 9398

$$

DAP
3 follow-up statements
000 
WWUS53 KDLH 261004
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
504 AM CDT FRI SEP 26 2008

MNC061-071-261045-
/O.CON.KDLH.TO.W.0021.000000T0000Z-080926T1045Z/
KOOCHICHING MN-ITASCA MN-
503 AM CDT FRI SEP 26 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR NORTHERN
ITASCA AND SOUTH CENTRAL KOOCHICHING COUNTIES...

AT 502 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
POSSIBLE TORNADO WAS LOCATED 6 MILES EAST OF WIRT...OR 39 MILES NORTH
OF GRAND RAPIDS...MOVING NORTHEAST AT 30 MPH.

THIS POSSIBLE TORNADO WILL BE NEAR...
  BIGFORK BY 515 AM...
  EFFIE BY 515 AM...
  CRAIGVILLE BY 525 AM...
  COON LAKE BY 535 AM...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4804 9329 4774 9309 4759 9402 4776 9417
TIME...MOT...LOC 1003Z 247DEG 26KT 4775 9383

$$

DAP
000 
WWUS53 KDLH 261025
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
525 AM CDT FRI SEP 26 2008

MNC061-071-261045-
/O.CON.KDLH.TO.W.0021.000000T0000Z-080926T1045Z/
KOOCHICHING MN-ITASCA MN-
524 AM CDT FRI SEP 26 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR NORTHERN
ITASCA AND SOUTH CENTRAL KOOCHICHING COUNTIES...

AT 520 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
POSSIBLE TORNADO WAS LOCATED NEAR EFFIE...OR 39 MILES NORTH OF GRAND
RAPIDS...MOVING EAST AT 36 MPH.

THIS POSSIBLE TORNADO WILL BE NEAR...
  COON LAKE BY 530 AM...
  TOGO BY 545 AM...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4804 9329 4774 9309 4759 9402 4776 9417
TIME...MOT...LOC 1024Z 254DEG 31KT 4780 9354

$$

DAP
000 
WWUS53 KDLH 261042
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
542 AM CDT FRI SEP 26 2008

MNC061-071-261052-
/O.EXP.KDLH.TO.W.0021.000000T0000Z-080926T1045Z/
KOOCHICHING MN-ITASCA MN-
542 AM CDT FRI SEP 26 2008

...THE TORNADO WARNING FOR NORTHERN ITASCA AND SOUTH CENTRAL
KOOCHICHING COUNTIES WILL EXPIRE AT 545 AM CDT...

THE STORM HAS WEAKENED AND IS NO LONGER CONSIDERED TORNADIC.
THEREFORE...THE TORNADO WARNING HAS EXPIRED.

LAT...LON 4804 9329 4774 9309 4759 9402 4776 9417
TIME...MOT...LOC 1042Z 254DEG 31KT 4784 9332

$$

DAP

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 4:39 AM CDTSevere Thunderstorm WarningDLHItasca, Koochiching66 min
Sep 26, 7:29 AM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis61 min
Sep 26, 8:29 AM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis61 min
Sep 26, 9:39 AM CDTSevere Thunderstorm WarningDLHSaint Louis36 min
Sep 26, 10:05 AM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis55 min
Sep 26, 11:00 AM CDTSevere Thunderstorm WarningDLHSaint Louis60 min
Sep 26, 5:07 PM CDTSevere Thunderstorm WarningDLHItasca, Saint Louis53 min
Sep 26, 5:19 PM CDTSevere Thunderstorm WarningDLHCass, Itasca41 min
Sep 26, 5:21 PM CDTFlash Flood WatchDLHAitkin, Carlton, Cass, Crow Wing, Itasca, Saint Louis4 hr
Sep 26, 5:40 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing65 min
Sep 26, 5:58 PM CDTSevere Thunderstorm WarningDLHSaint Louis47 min
Sep 26, 6:00 PM CDTSevere Thunderstorm WarningDLHCass, Itasca45 min
Sep 26, 6:36 PM CDTAreal Flood AdvisoryDLHAitkin, Cass, Crow Wing, Itasca, Saint Louis2 hr
Sep 26, 6:38 PM CDTSevere Thunderstorm WarningDLHCook, Lake39 min
Sep 26, 6:43 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing, Itasca, Saint Louis62 min
Sep 26, 6:47 PM CDTSpecial Marine WarningDLH88 min

Nearby

Tornado Warnings in Minnesota, 2008Every tornado warning in 2008Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.