Alert archive / Minnesota / Tornado Warnings in 2007
Tornado Warning 15, NWS Duluth, MN
NWS Duluth, MN issued this tornado warning at Sep 18, 2007, 6:53 PM CDT for Itasca County, Minnesota. It was in force for 37 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 18, 2007, 6:53 PM CDT (23:53 UTC)
- Expired
- Sep 18, 2007, 7:30 PM CDT
- In force
- 37 min
- Issued by
- NWS Duluth, MN
- Area
- Counties, with a storm outline in the text
County Itasca County, MN
The radar
The Duluth radar (KDLH), 109 km from the middle of the area, began a volume at 23:55 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 11.9 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 88 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 482 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDLH 182354 TORDLH MNC061-190030- /O.NEW.KDLH.TO.W.0015.070918T2353Z-070919T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DULUTH MN 653 PM CDT TUE SEP 18 2007 THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN ITASCA COUNTY IN NORTH CENTRAL MINNESOTA... * UNTIL 730 PM CDT * AT 651 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR GRAND RAPIDS...MOVING NORTHEAST AT 15 MPH. * THE TORNADO WILL BE NEAR... COLERAINE AND BOVEY BY 705 PM... TACONITE BY 720 PM... MARBLE AND CALUMET BY 730 PM... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE...OR A BASEMENT STAIRCASE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN A SMALL INTERIOR ROOM OR HALLWAY. USE BLANKETS OR PILLOWS TO COVER YOUR BODY. LAT...LON 4727 9370 4712 9352 4730 9313 4751 9333 $$ DAP
1 follow-up statement
000 WWUS53 KDLH 190011 SVSDLH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 710 PM CDT TUE SEP 18 2007 MNC061-190030- /O.CON.KDLH.TO.W.0015.000000T0000Z-070919T0030Z/ ITASCA MN- 710 PM CDT TUE SEP 18 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR SOUTHERN ITASCA COUNTY... AT 642 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR BOVEY. THIS TORNADO WAS NOW LOCATED NEAR COLERAINE...OR ABOUT 3 MILES NORTHEAST OF GRAND RAPIDS...MOVING NORTHEAST AT 15 MPH. THE TORNADO WILL BE NEAR... COLERAINE AND BOVEY BY 715 PM... TACONITE AND MARBLE BY 730 PM... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4727 9370 4712 9352 4730 9313 4751 9333 $$ DAP
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Duluth, MN wrote its last area forecast discussion before this tornado warning went out at Sep 18, 4:20 PM CDT, 2 hours 33 minutes earlier.
Area forecast discussion, Sep 18, 4:20 PM CDT, 2 hours 33 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 420 PM CDT TUE SEP 18 2007 DISCUSSION... CURRENT H2O VAPOR IMAGERY SHOWING DEEP PLUME OF GULF MOISTURE BEING ADVECTED INTO THE UPR MIDWEST...WITH COMPLEX LOW PRESSURE SW TROUGH SLOWLY MOVING ACROSS THE DAKOTAS. SEVERAL VORT MAXS AHEAD OF THE MAIN TROUGH HAVE HAVE BEEN DELIVERING A COUPLE ROUNDS OF RAIN WITH EMBEDDED TSTORMS DURING THE DAY TODAY...WITH THE HEAVIEST ACROSS NW WI. THE NEXT PIECE OF ENERGY IS MOVING THROUGH NW WI WITH ANOTHER ROUND OF MOD TO HVY RAIN IN THIS AREA. THIS EVENING...THE TROUGH AND COLD FRONTAL SYSTEM WILL SLOWLY PROGRESS THROUGH MN...BRINGING SCT TO NUM RAIN AND TSTORMS AHEAD OF IT. GFS DEVELOPS FAIRLY STRONG SFC LOW OVER LAKE SUPERIOR WITH LARGE PRECIP SHIELD TO THE NW OVER THE IRON RANGE. HOWEVER...GFS ENSEMBLE MEMBERS... ALONG WITH THE NAM...KEEP THE HEAVIEST PRECIP OVER NW WI. WENT WITH THIS SOLUTION OVERNIGHT...WITH ANOTHER 1 INCH PLUS OF RAIN EXPECTED HERE. WED MORNING...ONLY A FEW LINGERING SHOWERS ARE POSSIBLE OVER THE NERN CWA...OTHERWISE HIGH PRESSURE BUILDS IN WITH SKIES BECOMING PARTLY CLOUDY WITH SEASONABLE TEMPS. SFC WARM FRONT WILL LIFT NEWD THROUGH THE CWA AS SFC HIGH MOVES E THURSDAY. MEANWHILE...AN UPPER LEVEL SHORT WAVE WILL MOVE ACROSS NORTHERN MN. BULK OF THE LIFT WILL BE NEAR THE SHORT WAVE/WARM FRONT OVER NORTHERN MN/WESTERN PART OF THE FA. HAVE ADJUSTED POPS/WX/QPF GRIDS TO REFLECT THIS. WARM FRONT STALLS IN NE-SW ORIENTATION THURSDAY NIGHT BISECTING MN. ANOTHER WAVE TRAVELS ALONG THE FRONT WITH MORE RAIN. FINALLY...A STRONGER UPPER LEVEL WAVE MOVES OUT OF THE CANADIAN ROCKIES INTO THE PLAINS. THIS WILL PUSH A COLD FRONT THROUGH THE AREA ON FRIDAY. HIGHER QPF TOTALS WILL BE OVER NORTHERN HALF OF THE FA...RIGHT WHERE THE DROUGHT HAS BEEN THE WORST. THIS BENEFICIAL RAIN IS COMING AT THE RIGHT TIME TO RECHARGE SUB-SOIL MOISTURE LEVELS PRIOR TO WINTER. NEXT ROUND OF RAIN APPEARS TO BE ON TAP SUNDAY INTO NEXT WEEK. AVIATION... NUM SHRA/ISOLD TSTMS WITH IFR/MVFR CONDITIONS WILL PERSIST ACROSS THE FA OVERNIGHT AND INTO WEDNESDAY MORNING. A COLD FRONT...CURRENTLY RESIDING IN THE NW PORTION OF THE FA FROM INL TO PWC...WILL SLIDE SOUTHEAST OVER THE WRN GREAT LAKES REGION OVERNIGHT AND INTO WED MORNING. SOUTH WINDS AHEAD OF THIS FRONT WILL SWITCH OUT OF THE NW WITH THE FROPA. THE NW WINDS WILL INCREASE TO 10-15 KT AND BECOME GUSTY OVERNIGHT. THE SHRA/TSTMS WILL EXIT TO THE E THROUGH WED MORNING...WITH CIGS IMPROVING FROM WEST TO EAST THROUGH THE AFTN. && POINT TEMPS/POPS... DLH 54 69 43 63 / 80 20 10 10 INL 51 63 38 63 / 60 20 20 40 BRD 53 69 46 71 / 60 10 20 20 HYR 58 71 44 74 / 90 10 10 10 ASX 56 68 45 69 / 90 20 10 10 && .DLH WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. LS...NONE. TL/GRANING
Hazardous weather outlook, Sep 18, 3:31 AM CDT, 15 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 331 AM CDT TUE SEP 18 2007 LSZ121-140>148-162-MNZ010>012-018>021-025-026-033>038-WIZ001>004- 006>009-191030- BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN- GRAND MARAIS TO TACONITE HARBOR MN- TACONITE HARBOR TO SILVER BAY HARBOR MN- SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN- DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI- SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI- OPEN WATERS OF LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN-KOOCHICHING-NORTHERN ST. LOUIS- NORTHERN COOK/NORTHERN LAKE-NORTHERN ITASCA-CENTRAL ST. LOUIS- SOUTHERN LAKE/LAKESHORE-SOUTHERN COOK/LAKESHORE-NORTHERN CASS- SOUTHERN ITASCA-SOUTHERN CASS-CROW WING-NORTHERN AITKIN- SOUTHERN AITKIN-CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD- ASHLAND-IRON-BURNETT-WASHBURN-SAWYER-PRICE- 331 AM CDT TUE SEP 18 2007 ...SEVERE THUNDERSTORMS POSSIBLE ON THURSDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEASTERN MINNESOTA... NORTHWESTERN WISCONSIN...AND WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED OVER ALL AREAS TODAY AND TONIGHT...BUT THEY ARE NOT EXPECTED TO BE SEVERE. RAINFALL MAY BE HEAVY AT TIMES HOWEVER. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY MORE THUNDERSTORMS ARE FORECAST FOR THURSDAY AND FRIDAY AND AGAIN FOR SUNDAY AND MONDAY. A FEW STORMS ON THURSDAY COULD BECOME SEVERE...ESPECIALLY WEST OF A LINE FROM ELY TO AITKIN. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. 04
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 8:26 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 49 min |
| Sep 17, 10:21 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 39 min |
Nearby
Tornado Warnings in Minnesota, 2007Every tornado warning in 2007Tornadoes in 2007
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.