Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 88, NWS Lincoln, IL

August 16, 2002DeWitt County, Logan County, McLean County, Illinois

NWS Lincoln, IL issued this flash flood warning at Aug 16, 2002, 9:16 AM CDT for DeWitt County, Logan County, McLean 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: Aug 16, 2002, 9:16 AM CDT (14:16 UTC)
Expired: Aug 16, 2002, 3:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties DeWitt County, IL, Logan County, IL, McLean County, IL

The radar

The Lincoln radar (KILX), 26 km from the middle of the area, began a volume at 14:15 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, 2.3 hours before the alert went out and 48 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: 404 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 161416
FFWSPI
ILC039-107-113-162000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
914 AM CDT FRI AUG 16 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DE WITT COUNTY IN CENTRAL ILLINOIS
  LOGAN COUNTY IN CENTRAL ILLINOIS
  MCLEAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 300 PM CDT

* AT 910 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINS CONTINUING ALONG INTERSTATE 55 BETWEEN BLOOMINGTON AND
  LINCOLN. 5 TO 6 INCHES OF RAIN HAS BEEN ESTIMATED SINCE 4 AM.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL RATES OF 1 TO 2 INCHES PER
  HOUR WILL CONTINUE THROUGH NOON. THESE RAINFALL RATES WILL LIKELY
  PRODUCE FLASH FLOODING.

EXCESSIVE RAINFALL WILL CAUSE FLOODING NEAR STREAMS...CREEKS AND
NEARBY FARMLAND. BE ESPECIALLY CAUTIOUS ON COUNTY ROADS AND IN LOW
LYING AREAS. NEVER CROSS AREAS IN WHICH WATER COVERS THE ROADS.

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 4060 8866 4007 8877 4006 8916 3999 8958
          4032 8957 4033 8927 4059 8927

BYRD

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 6:22 AM CDT	Flash Flood Warning	ILX	Logan	3 hr
Aug 16, 7:14 AM CDT	Flash Flood Warning	ILX	McLean	3 hr
Aug 16, 8:56 AM CDT	Severe Thunderstorm Warning	ILX	Logan, Menard, Sangamon	49 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.