Alert archive / Minnesota / Flash Flood Warnings in 1990
Flash Flood Warning 5, NWS Duluth, MN
NWS Duluth, MN issued this flash flood warning at Sep 6, 1990, 6:00 AM CDT for Carlton County, Minnesota; Douglas County, Wisconsin. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Sep 6, 1990, 6:00 AM CDT (11:00 UTC)
- Expired
- Sep 6, 1990, 8:00 AM CDT
- In force
- 2 hr
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
Counties Carlton County, MN, 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, 11.0 hours before the alert went out and 213 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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 6, 12:18 AM CDT, 5 hours 42 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, 5 hours 35 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 | Pine | 65 min |
| Sep 5, 8:00 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 60 min |
| Sep 6, 12:44 AM CDT | Flash Flood Warning | DLH | Carlton | 2 hr |
| Sep 6, 2:36 AM CDT | Flash Flood Warning | DLH | Carlton | 3 hr |
| Sep 6, 6:00 AM CDT | Flash Flood Warning | DLH | Saint Louis | 2 hr |
| 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, 3:55 AM CDT | Flash Flood Warning | DLH | Douglas | 2 hr |
Nearby
Flash Flood Warnings in Minnesota, 1990Flash 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.