Alert archive / Wisconsin / Flash Flood Warnings in 1998
Flash Flood Warning 18, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood warning at Aug 6, 1998, 2:04 PM CDT for Lafayette County, Wisconsin. It was in force for 6 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
- Aug 6, 1998, 2:04 PM CDT (19:04 UTC)
- Expired
- Aug 6, 1998, 8:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Lafayette County, WI
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 7.1 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.
- Mixed-layer CAPE
- 1165 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 506 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKE 061904 FFWMKE WIC021-025-027-045-055-065-133-070100- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 204 PM CDT THU AUG 6 1998 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A * FLASH FLOOD WARNING FOR... COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN DANE COUNTY IN SOUTH CENTRAL WISCONSIN DODGE COUNTY IN SOUTHEASTERN WISCONSIN GREEN COUNTY IN SOUTH CENTRAL WISCONSIN JEFFERSON COUNTY IN SOUTHEASTERN WISCONSIN LAFAYETTE COUNTY IN SOUTH CENTRAL WISCONSIN WAUKESHA COUNTY IN SOUTHEASTERN WISCONSIN * UNTIL 800 PM CDT * AT 2PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED WIDESPREAD MODERATE TO HEAVY THUNDERSTORMS DEVELOPING OVER MUCH OF SOUTHERN WISCONSIN. THESE STORMS ARE MOVING SLOWLY NORTHWARD AROUND 10 MPH. * LOCALIZED TORRENTIAL RAINS WITH RAINFALL AMOUNTS UP TO 2 INCHES PER HOUR ARE INDICATED WITH SOME OF THE HEAVIER STORMS. THESE STORMS WILL PERSIST OVER SOUTHERN WISCONSIN INTO THE EVENING HOURS. AREA RESIDENTS SHOULD MONITOR THE LATEST WEATHER CONDITIONS AND IF HEAVY RAINS OR FLOODING ARE OBSERVED...BE PREPARED TO MOVE TO HIGHER GROUND. MK/TZ
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, Aug 6, 11:03 AM CDT, 3 hours 1 minute before
WIZ046-047-051-052-056>060-062>072-070000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1103AM CDT THU AUG 6 1998 ...NO RISK OF SEVERE THUNDERSTORMS TODAY OR TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... DISCUSSION... A VERY MOIST ATMOSPHERE COMBINED WITH LOW PRESSURE MOVING VERY SLOWLY THROUGH EASTERN IOWA AND WESTERN ILLINOIS WILL SET THE STAGE FOR SHOWERS AND THUNDERSTORMS TO BECOME MORE NUMEROUS ACROSS SOUTHEAST AND SOUTH CENTRAL WISCONSIN THIS AFTERNOON AND TONIGHT. THE STORMS SHOULD NOT BE SEVERE...BUT WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. SPOTTER ACTION... STORM SPOTTER GROUPS WILL NOT BE NEEDED FOR ACTIVATION THIS AFTERNOON OR TONIGHT ACROSS SOUTH CENTRAL AND SOUTHEAST WISCONSIN. ZAJDEL
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 9:00 PM CDT | Flash Flood Warning | MKX | Rock, Walworth | 3 hr |
| Aug 5, 11:59 PM CDT | Flash Flood Warning | MKX | Rock, Walworth | 6 hr |
| Aug 6, 6:22 AM CDT | Flash Flood Warning | MKX | Sheboygan | 4 hr |
| Aug 6, 2:04 PM CDT | Flash Flood Warning | MKX | Dodge, Jefferson, Waukesha | 6 hr |
| Aug 6, 2:04 PM CDT | Flash Flood Warning | MKX | Columbia, Dane, Green | 6 hr |
| Aug 6, 3:05 PM CDT | Flash Flood Warning | MKX | Milwaukee, Ozaukee, Washington | 5 hr |
| Aug 6, 6:00 PM CDT | Flash Flood Warning | MKX | Rock, Walworth | 2 hr |
Nearby
Flash Flood Warnings in Wisconsin, 1998Every flash flood warning in 1998
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.