Alert archive / Illinois / Flash Flood Warnings in 2003

Flash Flood Warning 49, NWS Lincoln, IL

July 21, 2003Douglas County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 21, 2003, 4:04 AM CDT for Douglas 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 as issued.

The facts

Issued: Jul 21, 2003, 4:04 AM CDT (09:04 UTC)
Expired: Jul 21, 2003, 10:00 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Douglas County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 09:04 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 57 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: 3794 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 210905
FFWILX
ILC041-211500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
404 AM CDT MON JUL 21 2003

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DOUGLAS COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 1000 AM CDT

* AT 359 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN HAS FALLEN OVER DOUGLAS COUNTY. 1 TO 3 INCHES OF
  RAIN HAS BEEN ESTIMATED SINCE 200 AM.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG CREEKS AND STREAMS ARE ESPECIALLY VULNERABLE
TO THE EFFECTS OF FLASH FLOODING. DO NOT ATTEMPT TO CROSS FLOODED
AREAS BY FOOT OR AUTOMOBILE.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 3969 8797 3968 8814 3966 8845 3989 8845
          3989 8814 3989 8795

$$

KELLY

NNNN

1 follow-up statement

000 
WGUS73 KILX 211050
FFSILX
ILC041-211100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
550 AM CDT MON JUL 21 2003

...THE FLASH FLOOD WARNING FOR DOUGLAS COUNTY HAS BEEN CANCELLED...

THE HEAVY RAINFALL AND FLOOD THREAT HAS ENDED ACROSS THE WARNED AREA.
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

$$

EH

NNNN

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 21, 12:21 AM CDT	Severe Thunderstorm Warning	ILX	Knox, Stark	54 min
Jul 21, 1:13 AM CDT	Severe Thunderstorm Warning	ILX	Knox, Peoria, Stark	62 min
Jul 21, 1:30 AM CDT	Severe Thunderstorm Warning	ILX	Marshall	60 min
Jul 21, 1:34 AM CDT	Severe Thunderstorm Warning	ILX	Fulton	26 min
Jul 21, 1:36 AM CDT	Tornado Warning	ILX	Marshall, Stark	54 min
Jul 21, 1:43 AM CDT	Severe Thunderstorm Warning	ILX	Tazewell, Woodford	62 min
Jul 21, 1:58 AM CDT	Severe Thunderstorm Warning	ILX	McLean	62 min
Jul 21, 2:14 AM CDT	Severe Thunderstorm Warning	ILX	Logan	61 min
Jul 21, 2:19 AM CDT	Flash Flood Warning	ILX	Peoria, Tazewell	6 hr
Jul 21, 2:40 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon	65 min
Jul 21, 2:51 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, Piatt	54 min
Jul 21, 3:18 AM CDT	Flash Flood Warning	ILX	Logan	3 hr
Jul 21, 3:37 AM CDT	Flash Flood Warning	ILX	DeWitt, Macon, Piatt	6 hr
Jul 21, 3:50 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	6 hr
Jul 21, 3:54 AM CDT	Severe Thunderstorm Warning	ILX	Sangamon	51 min
Jul 21, 4:09 AM CDT	Severe Thunderstorm Warning	ILX	Coles	51 min
Jul 21, 4:31 AM CDT	Severe Thunderstorm Warning	ILX	Clark, Cumberland	44 min

Nearby

Flash Flood Warnings in Illinois, 2003 Every flash flood warning in 2003

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.