Alert archive / Illinois / Flash Flood Warnings in 2001

Flash Flood Warning 21, NWS Paducah, KY

December 17, 20019 counties in Illinois

NWS Paducah, KY issued this flash flood warning at Dec 17, 2001, 9:15 AM CST for 9 counties in Illinois. It was in force for 4 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
Dec 17, 2001, 9:15 AM CST (15:15 UTC)
Expired
Dec 17, 2001, 1:30 PM CST
In force
4 hr
Issued by
NWS Paducah, KY
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Alexander County, IL, Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL

The radar

The Paducah radar (KPAH), 43 km from the middle of the area, began a volume at 15:19 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

Nashville Metro, TN (KBNA), launched 12:00Z, 3.3 hours before the alert went out and 238 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, Nashville Metro, TN at 12:00Z on 2001-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 2001-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 567 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
751 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
567 m²/s²
0-3 km storm-relative helicity
656 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 KPAH 171523
FFWPAH
ILC003-059-069-087-127-151-153-165-181-171930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
915 AM CST MON DEC 17 2001

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALEXANDER COUNTY IN SOUTHERN ILLINOIS
  GALLATIN COUNTY IN SOUTHERN ILLINOIS
  HARDIN COUNTY IN SOUTHERN ILLINOIS
  JOHNSON COUNTY IN SOUTHERN ILLINOIS
  MASSAC COUNTY IN SOUTHERN ILLINOIS
  POPE COUNTY IN SOUTHERN ILLINOIS
  PULASKI COUNTY IN SOUTHERN ILLINOIS
  SALINE COUNTY IN SOUTHERN ILLINOIS
  UNION COUNTY IN SOUTHERN ILLINOIS

* UNTIL 130 PM CST

* AT 912 AM CST...DOPPLER RADAR INDICATED NEARLY STATIONARY BANDS OF 
  MODERATE TO HEAVY RAIN OVER EXTREME SOUTHERN ILLINOIS. THE RAIN IS
  FALLING OVER ALREADY SATURATED GROUND...RESULTING IN FLOODING OF
  NUMEROUS STREAMS AND ROADWAYS. LAW ENFORCEMENT OFFICIALS IN       
  JOHNSON COUNTY REPORT NUMEROUS ROAD CLOSURES ACROSS THE COUNTY.   

* ADDITIONAL RAINFALL AMOUNTS OF 1/2 TO 1 INCH DURING THE NEXT       
  FEW HOURS WILL AGGRAVATE THE FLOODING SITUATION OVER MUCH OF       
  EXTREME SOUTHERN ILLINOIS.    

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO HIGHER
GROUND IMMEDIATELY.

LAT...LON 3789 8820 3756 8814 3741 8836 3740 8848
          3727 8851 3718 8862 3717 8878 3722 8899
          3714 8910 3712 8934 3753 8938 3760 8916
          3760 8872 3774 8871
1 follow-up statement
500 
RWUS32 KPAH 171823
FFSPAH
ILC003-059-069-087-127-151-153-165-181-199-171930-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
1213 PM CST MON DEC 17 2001

FLASH FLOOD WARNING CONTINUES FOR...
  ALEXANDER COUNTY IN SOUTHERN ILLINOIS
  GALLATIN COUNTY IN SOUTHERN ILLINOIS
  HARDIN COUNTY IN SOUTHERN ILLINOIS
  JOHNSON COUNTY IN SOUTHERN ILLINOIS
  MASSAC COUNTY IN SOUTHERN ILLINOIS
  POPE COUNTY IN SOUTHERN ILLINOIS
  PULASKI COUNTY IN SOUTHERN ILLINOIS
  SALINE COUNTY IN SOUTHERN ILLINOIS
  UNION COUNTY IN SOUTHERN ILLINOIS
  WILLIAMSON COUNTY IN SOUTHERN ILLINOIS

UNTIL 130 PM

AT 1210 PM CST...WIDESPREAD FLOODING OF STREAMS AND ROADWAYS 
CONTINUED ACROSS MUCH OF EXTREME SOUTHERN ILLINOIS. IN JOHNSON 
COUNTY...LAW ENFORCEMENT OFFICIALS REPORTED NEARLY 20 ROADS 
CLOSED...AND THE FLATWOODS COMMUNITY WAS COMPLETELY CUT OFF DUE TO 
HIGH WATER. IN JACKSON COUNTY...SPRINGER ROAD NEAR CARBONDALE WAS 
CLOSED. 

ELSEWHERE ACROSS THE WARNED AREA...NUMEROUS SECONDARY/COUNTY ROADS 
ARE EITHER WASHED OUT OR FLOODED. MOST CREEKS AND STREAMS ARE EITHER 
FLOODED OR AT BANKFULL. IN ADDITION...BANDS OF LIGHT TO MODERATE 
RAIN WILL CONTINUE TO DRIFT NORTHEAST ACROSS THE REGION. THIS WILL 
AGGRAVATE THE FLOODING THAT IS ALREADY OCCURRING. MAJOR ROAD 
PROBLEMS WILL LIKELY CONTINUE INTO THE  MID AFTERNOON HOURS.

$$

MEFFERT

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 17, 11:44 AM CSTFlash Flood WarningPAHWilliamson4 hr

Nearby

Flash Flood Warnings in Illinois, 2001Every flash flood warning in 2001

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.