Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 4, NWS Duluth, MN

June 17, 2003Itasca County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 17, 2003, 4:02 PM CDT for Itasca County, Minnesota. It was in force for 43 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: Jun 17, 2003, 4:02 PM CDT (21:02 UTC)
Expired: Jun 17, 2003, 4:45 PM CDT
In force: 43 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), 114 km from the middle of the area, began a volume at 21:03 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 severe thunderstorm 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, 9.0 hours before the alert went out and 120 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 366 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 81 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.

000 
WUUS53 KDLH 172102 CCA
SVRDLH
 MNC061-172145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED FOR FORMAT
NATIONAL WEATHER SERVICE DULUTH MN
347 PM CDT TUE JUN 17 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEAST ITASCA COUNTY IN NORTH CENTRAL MINNESOTA
  SOUTHERN ITASCA COUNTY IN NORTH CENTRAL MINNESOTA

* UNTIL 445 PM CDT

* AT 347 PM CDT...SKYWARN SPOTTERS REPORTED A SEVERE THUNDERSTORM   
  WITH LARGE HAIL OVER MARCELL...OR ABOUT 27 MILES NORTH  OF GRAND 
  RAPIDS...MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NASHWAUK AROUND 425 PM CDT...
  
THIS IS A DANGEROUS STORM...MOVE INDOORS AWAY FROM WINDOWS. IF CAUGHT
OUTDOORS GET INTO A DEPRESSION LIKE A RAVINE OR DITCH.

&

LAT...LON 4784 9313 4761 9378 4709 9372 4709 9311

$$

SS

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 17, 2:30 PM CDT, 1 hour 32 minutes earlier.

Area forecast discussion, Jun 17, 2:30 PM CDT, 1 hour 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
230 PM CDT TUE JUN 17 2003

SFC TROF MAKING ONLY SLOW PROGRESS ACRS NRN MN AND CONTS TO WEAKEN
AS ASSOC S/WV SCOOTS OFF TO THE NE. TROF SHUD BE OVR OR JUST E OF
DLH BY 00Z. AREA BTWN TROF AND SHRA ENTERING NWRN WI STILL UNSTABLE
AND NOW RECEIVING SOME SUNSHINE. LIMITING FACTORS ARE WK VERT WIND
SHEAR AND WK LOLVL FORCING OTHR THAN SFC HEATING. SOME STORMS
ALREADY REFIRING IN NWRN CWA ALG TROF. WILL HAVE TO WATCH CLOSELY
FOR ISOLD SVR REST OF AFTN/EVE. SEE SWODY1 FOR MORE DETAILS. WILL
ACCOUNT FOR THIS IN FIRST PD OF NEW ZFP. ACTIVITY SHUD DIMINISH
RAPIDLY THIS EVE AS TROF PASSES...COOLER/DRIER AIR MOVES INTO THE
RGN...AND WE LOSE SUNSHINE. ANOTHER UPR TROF SWINGS ACRS THE WRN GRT
LKS ON WED...BUT AMS QUITE DRY BY THEN WITH INCREASING SUBSIDENCE.
WILL KEEP DRY. MAY ADJUST 1ST PD POPS OR TIMING A BIT...OTHW CURRENT
GRIDS LOOK TO BE ON TRACK. NEXT MENTION OF PRECIP WILL BE THIS
WEEKEND AS MAJ W COAST TROF DEVELOPS AND NEW SERIES OF S/WVS
APPROACH FROM THE SW. TEMPS STILL IN LINE WITH MOS GUIDANCE AND CAA
PATTERN THAT SETS UP FOR NXT 48 HRS. LTL OR NO CHANGES PLANNED FOR
TEMP GRIDS.

.DLH...NONE.

ERF

Hazardous weather outlook, Jun 17, 7:21 AM CDT, 8 hours 41 minutes before

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-181230-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
721 AM CDT TUE JUN 17 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEASTERN MINNESOTA AND
NORTHWESTERN WISCONSIN.

.DAY ONE...TODAY AND TONIGHT
SCATTERED THUNDERSTORMS CAN BE EXPECTED ACROSS NORTHEAST
MINNESOTA AND NORTHWEST WISCONSIN TODAY...AND FROM EXTREME EASTERN
MINNESOTA INTO NORTHWEST WISCONSIN THIS EVENING. MOST OF
THUNDERSTORMS ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS...BUT AN
ISOLATED SEVERE THUNDERSTORM IS POSSIBLE...PRODUCING LARGE
HAIL OR DAMAGING WIND.

THE THUNDERSTORMS SHOULD END IN FAR NORTHERN MINNESOTA TOWARD
INTERNATIONAL FALLS LATER THIS AFTERNOON...AND CONTINUE TO DECREASE
FROM NORTHWEST TO SOUTHEAST THIS AFTERNOON AND TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE FOR THUNDERSTORMS AGAIN SATURDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED THIS AFTERNOON OR
TONIGHT.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING URL:

HTTP://WWW.CRH.NOAA.GOV/DLH

MELDE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 3:49 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	56 min
Jun 17, 4:43 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	32 min
Jun 17, 5:06 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	54 min
Jun 17, 5:59 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Saint Louis	61 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2003 Every severe thunderstorm warning in 2003

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.