Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 41, NWS Lincoln, IL

May 12, 2002Cass County, Mason County, Menard County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 12, 2002, 2:24 AM CDT for Cass County, Mason County, Menard 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: May 12, 2002, 2:24 AM CDT (07:24 UTC)
Expired: May 12, 2002, 8:30 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Cass County, IL, Mason County, IL, Menard County, IL

The radar

The Lincoln radar (KILX), 48 km from the middle of the area, began a volume at 07:26 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, 7.4 hours before the alert went out and 110 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: 639 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 475 m²/s²
0-3 km storm-relative helicity: 517 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 120724
FFWSPI
ILC017-125-129-121330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
223 AM CDT SUN MAY 12 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MENARD COUNTY IN CENTRAL ILLINOIS
  MASON COUNTY IN CENTRAL ILLINOIS
  CASS COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 830 AM CDT

* AT 220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  THUNDERSTORMS WITH VERY HEAVY RAIN MOVING INTO THE AREA.  
    
* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE THROUGH AT 
  LEAST 4 AM. RAINFALL RATES OF 1 TO 2 INCHES AN HOUR WILL BE 
  COMMON. TOTAL RAINFALL AMOUNTS WILL LIKELY RANGE FROM 2 TO 4
  INCHES. THESE RAINFALL AMOUNTS WILL LIKELY PRODUCE FLASH FLOODING.

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 4037 8974 4002 8962 3991 9049 4043 8989

FRIEDERS

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:52 PM CDT	Severe Thunderstorm Warning	ILX	Knox	38 min
May 11, 8:02 PM CDT	Severe Thunderstorm Warning	ILX	Stark	58 min
May 12, 1:43 AM CDT	Severe Thunderstorm Warning	ILX	Schuyler	47 min
May 12, 2:10 AM CDT	Flash Flood Warning	ILX	Schuyler	6 hr
May 12, 3:58 AM CDT	Flash Flood Warning	ILX	Christian, Logan, Macon, Morgan, Sangamon, Scott	6 hr
May 12, 5:42 AM CDT	Flash Flood Warning	ILX	Coles, Douglas, Macon, Moultrie, Piatt, Shelby	6 hr
May 12, 5:44 AM CDT	Flash Flood Warning	ILX	Coles, Douglas, Moultrie, Piatt, Shelby	6 hr
May 12, 6:24 AM CDT	Flash Flood Warning	ILX	Edgar	5 hr
May 12, 7:12 AM CDT	Flash Flood Warning	ILX	Clark, Cumberland	7 hr
May 12, 10:56 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	6 hr
May 12, 12:11 PM CDT	Flash Flood Warning	ILX	Clay, Crawford, Effingham, Jasper, Lawrence, Richland	6 hr
May 12, 5:21 PM CDT	Severe Thunderstorm Warning	ILX	Effingham, Jasper	39 min

Nearby

Flash Flood Warnings in Illinois, 2002 Every 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.