Alert archive / Wisconsin / Flash Flood Warnings in 1999
Flash Flood Warning 5, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood warning at May 17, 1999, 4:10 AM CDT for Green County, Lafayette County, Wisconsin. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 17, 1999, 4:10 AM CDT (09:10 UTC)
- Expired
- May 17, 1999, 6:00 PM CDT
- In force
- 14 hr
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
Counties Green County, WI, Lafayette County, WI
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 9.2 hours before the alert went out and 128 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
- 3009 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1174 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.9
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, May 17, 1:56 AM CDT, 2 hours 14 minutes before
WIZ046-047-051-056>058-062>064-067>069-170730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 156 AM CDT MON MAY 17 1999 THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 5 AM HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES ONLY... SAUK...IOWA...LAFAYETTE...MARQUETTE...GREEN LAKE...COLUMBIA...DANE... GREEN...FOND DU LAC...DODGE...JEFFERSON AND ROCK. THE WATCH REMAINS IN EFFECT FOR A SMALL CORNER OF FAR SOUTHEAST WISCONSIN.
Special weather statement, May 17, 1:56 AM CDT, 2 hours 14 minutes before
WIZ046-047-051-056>058-062>064-067>069-170730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 156 AM CDT MON MAY 17 1999 THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 5 AM HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES ONLY... SAUK...IOWA...LAFAYETTE...MARQUETTE...GREEN LAKE...COLUMBIA...DANE... GREEN...FOND DU LAC...DODGE...JEFFERSON AND ROCK. THE WATCH REMAINS IN EFFECT FOR A SMALL CORNER OF FAR SOUTHEAST WISCONSIN.
Special weather statement, May 17, 2:30 AM CDT, 1 hour 40 minutes before
WIZ052-059-060-065-066-070>072-170805- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 230 AM CDT MON MAY 17 1999 ...SEVERE THUNDERSTORM WATCH NUMBER 280 HAS BEEN CANCELLED FOR THE REMAINDER OF SOUTHEAST WISCONSIN... SEVERE THUNDERSTORM WATCH NUMER 280 HAS BEEN CANCELLED FOR ALL OF SOUTHERN WISCONSIN. THE SEVERE WEATHER HAS MOVED OUT OVER LAKE MICHIGAN WITH THE THREAT OF SEVERE WEATHER FOR SOUTHERN WISCONSIN OVER FOR THE REMAINDER OF THE NIGHT. JH
Special weather statement, May 17, 2:30 AM CDT, 1 hour 40 minutes before
WIZ052-059-060-065-066-070>072-170805- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 230 AM CDT MON MAY 17 1999 ...SEVERE THUNDERSTORM WATCH NUMBER 280 HAS BEEN CANCELLED FOR THE REMAINDER OF SOUTHEAST WISCONSIN... SEVERE THUNDERSTORM WATCH NUMER 280 HAS BEEN CANCELLED FOR ALL OF SOUTHERN WISCONSIN. THE SEVERE WEATHER HAS MOVED OUT OVER LAKE MICHIGAN WITH THE THREAT OF SEVERE WEATHER FOR SOUTHERN WISCONSIN OVER FOR THE REMAINDER OF THE NIGHT. JH
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 7:37 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha | 63 min |
| May 16, 9:15 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 60 min |
| May 16, 9:20 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 60 min |
| May 16, 10:10 PM CDT | Flash Flood Warning | MKX | Iowa, Lafayette | 3 hr |
| May 16, 10:10 PM CDT | Flash Flood Warning | MKX | Sauk | 3 hr |
| May 16, 10:17 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 58 min |
| May 16, 10:43 PM CDT | Flash Flood Warning | MKX | Columbia, Marquette | 3 hr |
| May 16, 11:06 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 59 min |
| May 16, 11:23 PM CDT | Flash Flood Warning | MKX | Green | 3 hr |
| May 17, 12:30 AM CDT | Severe Thunderstorm Warning | MKX | Rock | 60 min |
| May 17, 1:24 AM CDT | Severe Thunderstorm Warning | MKX | Walworth | 61 min |
| May 17, 1:30 AM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 60 min |
Nearby
Flash Flood Warnings in Wisconsin, 1999Every flash flood warning in 1999
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.