Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 8, NWS Quad Cities, IA

June 4, 2002Jo Daviess County, Illinois; Dubuque County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 4, 2002, 4:06 AM CDT for Jo Daviess County, Illinois; Dubuque County, Iowa. It was in force for 5 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
Jun 4, 2002, 4:06 AM CDT (09:06 UTC)
Expired
Jun 4, 2002, 9:00 AM CDT
In force
5 hr
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Dubuque County, IA, Jo Daviess County, IL

The radar

The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 09:09 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.1 hours before the alert went out and 300 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2002-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 593 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2002-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
593 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
2137 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

051 
WGUS53 KDVN 040906
FFWMLI
IAC061-ILC085-041400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
400 AM CDT TUE JUN 4 2002

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DUBUQUE COUNTY IN NORTHEAST IOWA
  JO DAVIESS COUNTY IN NORTHWEST ILLINOIS

* UNTIL 900 AM CDT

* AT 400 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE LOCATED OVER THE
  WARNED AREA.

* NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES INDICATE 1 TO 1.5
INCHES OF RAINFALL WITH A LINE OF THUNDERSTORMS MOVING THROUGH THE
AREA.  DUBUQUE AND JO DAVIESS COUNTIES HAVE ALREADY HAD 2 TO 4
INCHES OF RAIN EARLIER TONIGHT.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES...AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE WATER MAY
BE TOO DEEP TO CROSS SAFELY OR THE ROAD COULD BE WASHED OUT. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

REA





$$

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 3, 10:16 PM CDTFlash Flood WarningDVNWhiteside6 hr
Jun 3, 10:16 PM CDTSevere Thunderstorm WarningDVNCarroll54 min
Jun 3, 11:24 PM CDTSevere Thunderstorm WarningDVNCarroll, Stephenson76 min
Jun 4, 4:30 AM CDTFlash Flood WarningDVNCarroll, Stephenson, Whiteside5 hr
Jun 4, 8:57 AM CDTFlash Flood WarningDVNHenry, Mercer, Rock Island5 hr
Jun 4, 9:06 AM CDTFlash Flood WarningDVNJo Daviess5 hr
Jun 4, 9:38 AM CDTFlash Flood WarningDVNCarroll, Stephenson, Whiteside5 hr
Jun 4, 11:43 AM CDTFlash Flood WarningDVNCarroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more6 hr
Jun 4, 1:30 PM CDTSevere Thunderstorm WarningDVNMercer, Warren45 min
Jun 4, 1:41 PM CDTFlash Flood WarningDVNBureau, Putnam4 hr
Jun 4, 3:54 PM CDTSevere Thunderstorm WarningDVNMcDonough51 min
Jun 3, 10:07 PM CDTSevere Thunderstorm WarningDVNDubuque53 min
Jun 3, 11:13 PM CDTFlash Flood WarningDVNBuchanan, Delaware6 hr
Jun 4, 5:24 AM CDTFlash Flood WarningDVNJackson, Jones5 hr
Jun 4, 6:24 AM CDTFlash Flood WarningDVNBuchanan, Delaware6 hr
Jun 4, 7:25 AM CDTFlash Flood WarningDVNCedar, Clinton, Muscatine, Scott6 hr
Jun 4, 8:43 AM CDTFlash Flood WarningDVNLinn3 hr
Jun 4, 8:55 AM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware50 min
Jun 4, 10:02 AM CDTSevere Thunderstorm WarningDVNLinn43 min
Jun 4, 10:20 AM CDTFlash Flood WarningDVNJackson, Jones5 hr
Jun 4, 10:31 AM CDTSevere Thunderstorm WarningDVNCedar, Muscatine44 min
Jun 4, 11:04 AM CDTSevere Thunderstorm WarningDVNDelaware41 min

Nearby

Flash Flood Warnings in Illinois, 2002Flash Flood Warnings in Iowa, 2002Every flash flood warning in 2002

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; radar from the NEXRAD Level II archive.