Severe Thunderstorm Warning 39, NWS Duluth, MN

Issued

Jul 16, 1997, 2:43 PM CDT (19:43 UTC)

Expired

Jul 16, 1997, 3:45 PM CDT

In force

62 min

Issued by

NWS Duluth, MN

Area

Whole counties

County Sawyer County, WI

The Duluth radar (KDLH), 134 km from the middle of the area, began a volume at 19:47 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

000 
TTAA00 KDLH 161943 RRA
SVRDLH
WIC113-162045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DULUTH MN
243 PM CDT WED JUL 16 1997
 
THE NATIONAL WEATHER SERVICE IN DULUTH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  345 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST WISCONSIN
 
   ...SAWYER COUNTY
 
AT 240 PM CDT...DULUTH DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
10 MILES SOUTHEAST OF HAYWARD. THE SEVERE STORM WAS MOVING SOUTHEAST
AT 20 MPH.
 
THIS SEVERE STORM HAS THE POTENTIAL TO PRODUCE DAMAGING HAIL TO 2
INCHES.
 
THIS STORM WILL MOVE THROUGH THE RURAL AREAS REACHING THE VICINITY OF
WINTER AND LORETTA BY 330 PM CDT.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
WJC

NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 16, 2:35 PM CDT, 8 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
230 PM CDT WED JUL 16 1997

PROBLEM OVERNIGHT WILL BE THUNDERSTORMS.

CONVECTION FIRED IN NORTHWEST WISCONSIN EARLIER THIS AFTERNOON
ALONG A WEAK SFC BOUNDARY AND WAS AIDED BY A VORT TAIL THAT
HAS SINCE MOVED EAST. THERE ALSO APPEARS TO BE A DEWPOINT BOUNDARY IN
NORTHWEST WISCONSIN. AIR AT THE SFC IS QUITE JUICY WITH DEWPOINTS
IN THE LOWER 60S IN NORTHERN MINNESOTA AND IN THE LOWER 70S IN
NORTHWEST WI.

MOST OF CONVECTION AS MOVED OUT OF THE AREA BUT ETA SHOWS CONFLUENT
FLOW FROM THE SURFACE TO H7 FROM CENTRAL NORTH DAKOTA INTO CENTRAL
MINNESOTA. THIS ACTING TO TIGHTEN TEMPERATURE GRADIENT AND IS
RESULTING IN FROTOGENESIS. FEEL NORTHWEST CWA...INL...CDD...WILL
SEE A CHANCE FOR THUNDERSTORMS THROUGH ABOUT MIDNIGHT...WITH A BETTER
CHANCE ACROSS NW WI AND FM BRD TO HINCKLEY. A H5 VORT MAX WILL
MOVE SOUTHEAST ACROSS MINNESOTA TONIGHT AIDING IN CONVECTION.
NORTHWEST WISCONSIN S6HOULD ALSO HAVE OLD CONVECTIVE BOUNDARIES
AROUND FROM EARLIER CONVECTION TO INCREASE THEIR CHANCES.

AS FOR TEMPERATURES...FWC GUIDANCE LOOKS PRETTY GOOD EXCEPT I
THINK INL AND ARROWHEAD WILL BE AROUND 60.

MELDE

Severe Thunderstorm Warnings in Wisconsin, 1997Every severe thunderstorm warning in 1997

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.