Alert archive / Wisconsin / Flash Flood Warnings in 1990
Flash Flood Warning 4, NWS Duluth, MN
NWS Duluth, MN issued this flash flood warning at Sep 6, 1990, 3:55 AM CDT for Douglas County, Wisconsin. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Sep 6, 1990, 3:55 AM CDT (08:55 UTC)
- Expired
- Sep 6, 1990, 6:00 AM CDT
- In force
- 2 hr
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Douglas County, WI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 8.9 hours before the alert went out and 223 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
- 3941 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 933 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 4.6
- Supercell composite
- 25.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDLH 060857
FFWDLH
WIC031-061100-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DULUTH MN
355 AM CDT THU SEP 6 1990
THE NATIONAL WEATHER SERVICE IN DULUTH HAS EXTENDED THE
FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHWEST WISCONSIN
...DOUGLAS
AT 4 AM RADAR SHOWED RAINS CONTINUING OVER DOUGLAS COUNTY... WITH NEW
THUNDERSTORMS MOVING INFROM THE WEST. SOME ROADS HAVE BEEN REPORTED
UNDER WATER ALREADY... EAST OF SUPERIOR ON HIGHWAY B... AT HIGHWAY A ANDNEWMAN ROAD AND MILITARY ROAD NEAR OLIVER. THE NEW STORMS WILL LIKELY
MAKE THE SITUATION EVEN WORSE. THUS THE NATIONAL WEATHER SERVICE IS
EXTENDING THE WARNING FOR DOUGLAS COUNTY.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
WESTERGARDWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 5, 10:30 PM CDT, 5 hours 25 minutes before
MNZ003-004-005-007-008-009-060430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1030 PM CDT WED SEP 6 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF NORTHERN AND CENTRAL MINNESOTA...NORTHWESTERN WISCONSIN AND WESTERN LAKE SUPERIOR UNTIL MIDNIGHT... AT 1025 PM CDT RADAR INDICATED SOME STRONG THUNDERSTORMS OVER PORTIONS OF NORTHEAST MINNESOTA. ONE AREA COVERED MOST OF CARLTON COUNTY AND ONE STRONG THUNDERSTORM WAS IN NORTHWEST ITASCA COUNTY...JUST A LITTLE NORTH OF WINNIBIGOSHISH LAKE. THESE THUNDERSTORMS HAVE THE POTENTIAL TO CAUSE STRONG GUSTY WINDS... HAIL...FREQUENT LIGHTNING STRIKES AND HEAVY DOWNPOURS. THE THUNDERSTORMS IN CARTON COUNTY WERE MOVING TO THE SOUTHEAST AT 35 MPH AND THE THUNDERSTORM IN ITASCA COUNTY WAS MOVING EAST AT 35 MPH.
Special weather statement, Sep 5, 11:33 PM CDT, 4 hours 22 minutes before
MNZ003-004-005-007-008-009-011-012-WIZ001>004- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1130 PM CDT WED SEP 6 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF NORTHERN AND CENTRAL MINNESOTA...NORTHWESTERN WISCONSIN AND WESTERN LAKE SUPERIOR UNTIL MIDNIGHT... SHOWERS AND THUNDERSTORMS CONTINUE OVER NORTHEAST MINNESOTA AND NORTHWEST AND NORTH CENTRAL WISCONSIN AT 1130 MPH CDT. A LINE OF SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...EXTENDED FROM A LITTLE NORTH OF WINNIBIGOSHISH LAKE IN NORTHWEST ITASCA COUNTY OF NORTHERN MINNESOTA TO THE DULUTH/SUPERIOR AREA AND ON TO THE VICINITY OF PARK FALLS IN NORTH CENTRAL WISCSONSIN. THIS LINE WAS ROUGHLY 30 MILES WIDE. THE STRENGTH OF THE THUNDERSTORMS HAS CONTINUED TO DECREASE DURING THE PAST HOUR AND THE SEVERE THUNDERSTORM WATCH IS NOT EXPECTED TO BE EXTENDED. HOWEVER...THE THUNDERSTORMS MAY STILL CAUSE SOME STRONG GUSTY WINDS...HAIL...FREEQUENT LIGHTN"ING STRIKES AND HEAVY DOWNPOURS.
Special weather statement, Sep 5, 11:40 PM CDT, 4 hours 15 minutes before
MNZ003-004-005-007-008-009-011-012-WIZ001>004-060530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1130 PM CDT WED SEP 6 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF NORTHERN AND CENTRAL MINNESOTA...NORTHWESTERN WISCONSIN AND WESTERN LAKE SUPERIOR UNTIL MIDNIGHT... SHOWERS AND THUNDERSTORMS CONTINUE OVER NORTHEAST MINNESOTA AND NORTHWEST AND NORTH CENTRAL WISCONSIN AT 1130 PM CDT. A LINE OF SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...EXTENDED FROM A LITTLE NORTH OF WINNIBIGOSHISH LAKE IN NORTHWEST ITASCA COUNTY OF NORTHERN MINNESOTA TO THE DULUTH/SUPERIOR AREA AND ON TO THE VICINITY OF PARK FALLS IN NORTH CENTRAL WISCSONSIN. THIS LINE WAS ROUGHLY 30 MILES WIDE. THE STRENGTH OF THE THUNDERSTORMS HAS CONTINUED TO DECREASE DURING THE PAST HOUR AND THE SEVERE THUNDERSTORM WATCH IS NOT EXPECTED TO BE EXTENDED. HOWEVER...THE THUNDERSTORMS MAY STILL CAUSE SOME STRONG GUSTY WINDS...HAIL...FREQUE#NT LIGHTNING STRIKES AND HEAVY DOWNPOURS.
Special weather statement, Sep 6, 12:18 AM CDT, 3 hours 37 minutes before
MNZ003-004-005-007-008-009-011-012-WIZ001>004-060615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1215 AM CDT THU SEP 6 1990 AT 1210 PM CDT NUMEROUS SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN CONTINUED OVER PORTIONS OF NORTHEAST MINNESOTA...NORTHWEST WISCONSIN AND WESTERN LAKE SUPERIOR. THESE SHOWERS AND THUNDERSTORMS WERE IN A LINE ABOUT 40 MILES WIDE WHICH EXTENDED FROM 65 MILES NORTHWEST OF DULUTH TO THE RHINELANDER AREA OF NORTH CENTRAL WISCONSIN. THE THUNDERSTORMS STILL HAVE THE POTENTIAL TO PRODUCE STRONG GUSTY WINDS...HAIL..FREQUENT LIGHTNING STRIKES AND HEAVY DOWNPOURS. MOVEMENT OF THE SHOWERS AND THUNDERSTORMS WAS TO THE SOUTHEAST AT 30 TO 35 MPH.
Special weather statement, Sep 6, 12:25 AM CDT, 3 hours 30 minutes before
MNZ003-004-005-007-008-009-011-012-WIZ001>004-060615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 1215 AM CDT THU SEP 6 1990 AT 1210 AM CDT NUMEROUS SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN CONTINUED OVER PORTIONS OF NORTHEAST MINNESOTA...NORTHWEST WISCONSIN AND WESTERN LAKE SUPERIOR. THESE SHOWERS AND THUNDERSTORMS WERE IN A LINE ABOUT 40 MILES WIDE WHICH EXTENDED FROM 65 MILES NORTHWEST OF DULUTH TO THE RHINELANDE$R AREA OF NORTH CENTRAL WISCONSIN. THE THUNDERSTORMS STILL HAVE THE POTENTIAL TO PRODUCE STRONG GUSTY WINDS...HAIL..FREQUENT LIGHTNING STRIKES AND HEAVY DOWNPOURS. MOVEMENT OF THE SHOWERS AND THUNDERSTORMS WAS TO THE SOUTHEAST AT 30 TO 35 MPH.
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 7:10 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Washburn | 65 min |
| Sep 5, 8:20 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer, Washburn | 55 min |
| Sep 5, 8:20 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 55 min |
| Sep 5, 10:00 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Washburn | 45 min |
| Sep 6, 1:53 AM CDT | Flash Flood Warning | DLH | Douglas | 2 hr |
| Sep 6, 6:00 AM CDT | Flash Flood Warning | DLH | Douglas | 2 hr |
Nearby
Flash Flood Warnings in Wisconsin, 1990Every flash flood warning in 1990
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.