Alert archive / Illinois / Flash Flood Warnings in 2005

Flash Flood Warning 21, NWS Paducah, KY

September 20, 2005Jefferson County, Illinois

NWS Paducah, KY issued this flash flood warning at Sep 20, 2005, 12:08 AM CDT for Jefferson County, Illinois. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 20, 2005, 12:08 AM CDT (05:08 UTC)
Expired: Sep 20, 2005, 3:00 AM CDT
In force: 3 hr
Issued by: NWS Paducah, KY
Area: Counties, with a storm outline in the text

County Jefferson County, IL

The radar

The Evansville,IN radar (KVWX), 101 km from the middle of the area, began a volume at 05:08 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 00:00Z, 5.1 hours before the alert went out and 312 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2082 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 33 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 200509
FFWPAH
ILC081-200800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
1208 AM CDT TUE SEP 20 2005

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTH CENTRAL ILLINOIS.

* UNTIL 300 AM CDT.

* AT 1205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM 6    
  MILES SOUTHWEST OF NASHVILLE TO 8 MILES EAST OF MOUNT VERNON. THE  
  LINE OF STORMS WAS SHOWING LITTLE MOVEMENT.

* OTHER LOCATIONS IN THE WARNING INCLUDE BELLE RIVE...WALTONVILLE...
  BONNIE...NASON AND INA.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE WARNED 
AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. 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.

LAT...LON 3814 8872 3814 8913 3847 8913 3847 8871

$$

1 follow-up statement

000 
WGUS73 KPAH 200645
FFSPAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
144 AM CDT TUE SEP 20 2005

ILC081-200800-
JEFFERSON IL-
144 AM CDT TUE SEP 20 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 300 AM CDT FOR JEFFERSON
COUNTY...

LOCATIONS IN THE WARNING INCLUDE WOODLAWN...MOUNT VERNON AND BLUFORD.

AT 140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE AN AREA OF LIGHT TO MODERATE RAIN OVER THE AREA. THOUGH THE 
HEAVIEST RAIN HAS NOW SHIFTED SOUTH OF THE REGION...ANY ONGOING 
FLOODING WILL LIKELY CONTINUE FOR THE NEXT HOUR OR TWO.

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.
MOVE TO HIGHER GROUND.

LAT...LON 3814 8872 3814 8913 3847 8913 3847 8871

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 10:27 PM CDT	Severe Thunderstorm Warning	PAH	Wabash	23 min

Nearby

Flash Flood Warnings in Illinois, 2005 Every flash flood warning in 2005

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.