Alert archive / Illinois / Flash Flood Warnings in 2000

Flash Flood Warning 16, NWS Quad Cities, IA

July 10, 2000Carroll County, Jo Daviess County, Illinois

NWS Quad Cities, IA issued this flash flood warning at Jul 10, 2000, 1:15 AM CDT for Carroll County, Jo Daviess County, Illinois. 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 10, 2000, 1:15 AM CDT (06:15 UTC)
Expired
Jul 10, 2000, 7:15 AM CDT
In force
6 hr
Issued by
NWS Quad Cities, IA
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Carroll County, IL, Jo Daviess County, IL

The radar

The Quad Cities radar (KDVN), 74 km from the middle of the area, began a volume at 06:19 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

Davenport, (KDVN), launched 00:00Z, 6.3 hours before the alert went out and 70 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, Davenport, at 00:00Z on 2000-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2939 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2000-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
2939 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1086 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 100615
FFWDVN
ILC015-085-101200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
115 AM CDT MON JUL 10 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JO DAVIESS COUNTY IN NORTHWEST ILLINOIS
  CARROLL COUNTY IN NORTHWEST ILLINOIS

* UNTIL 715 AM CDT

* AT 107 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAIN WAS FALLING OVER PORTIONS OF THE WARNED AREA. ADDITIONAL
  THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL MOVE IN FROM THE NORTHWEST
  IN THE NEXT COUPLE OF HOURS.

* THUNDERSTORMS WERE CONTINUOUSLY REDEVELOPING AND MOVING OVER
  PORTIONS OF THE WARNED AREA...LEADING TO VERY HIGH RAINFALL
  RATES AND THE LIKELIHOOD OF FLASH FLOODING IN THE PORTIONS OF THE WARNED AREA.
  DOPPLER RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAINFALL SOUTHWEST JO DAVIESS
  AND NORTHWEST CARROLL COUNTY IN THE LAST 2 HOURS. ADDITIONAL RAINFALL RATES
  OF 1 INCH PER HOUR  COULD CAUSE SOME LOCATIONS TO SEE 3 TO 4 INCHES
  OF RAINFALL BEFORE THE RAIN COMES TO AN END.

SOME LOCATIONS IN THE WARNING INCLUDE MOUNT
CARROLL...WHITTON...HANOVER...WACKER...MISSISSIPPI PALISADES S.P

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 HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVzE TO HIGHER GROUND.

CAMPERS SHOULD ALONG STREAMS AND FLOOD PRONE LOW LYING AREAS...SHOULD
MOVE TO HIGHER GROUND NOW!

LAT...LON 4235 8996 4217 8991 4198 8979 4204 9010
          4207 9019 4218 9043 4233 9056

CROSBIE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 3:34 AM CDTSevere Thunderstorm WarningDVNCarroll, Jo Daviess, Stephenson41 min

Nearby

Flash Flood Warnings in Illinois, 2000Every flash flood warning in 2000

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.