Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 47, NWS Lincoln, IL

May 12, 2002Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 12, 2002, 10:56 AM CDT for Champaign County, Vermilion 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, 10:56 AM CDT (15:56 UTC)
Expired: May 12, 2002, 5:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 16:00 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 12:00Z, 3.9 hours before the alert went out and 47 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: 77 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 829 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 121556
FFWSPI
ILC019-183-122200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1055 AM CDT SUN MAY 12 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS
  VERMILION COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 500 PM CDT

* AT 1055 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED VERY HEAVY RAIN HAS FALLEN NEAR TOLONO. 1 TO 2 INCHES
  OF RAIN HAS BEEN ESTIMATED SINCE 1000 AM.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS
  CHAMPAIGN AND VERMILION COUNTIES. RAINFALL AMOUNTS WILL LIKELY
  RANGE FROM 1 TO 3 INCHES BY 100 PM. THESE RAINFALL AMOUNTS WILL
  LIKELY PRODUCE FLASH FLOODING.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR
VEHICLE INTO AREAS IN WHICH WATER COVERS THE ROADWAY. IT ONLY TAKES A
FOOT OR TWO OF WATER TO WASH MOST VEHICLES AWAY. VEHICLES CAUGHT IN
RISING WATERS SHOULD BE ABANDONED QUICKLY.

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 3996 8842 3995 8817 3999 8759 4042 8768

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, 2:24 AM CDT	Flash Flood Warning	ILX	Cass, Mason, Menard	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, 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.