Alert archive / Illinois / Flash Flood Warnings in 2001

Flash Flood Warning 31, NWS Lincoln, IL

July 17, 2001Morgan County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 17, 2001, 5:42 PM CDT for Morgan 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 counties it named.

The facts

Issued: Jul 17, 2001, 5:42 PM CDT (22:42 UTC)
Expired: Jul 17, 2001, 9:00 PM CDT
In force: 3 hr
Issued by: NWS Lincoln, IL
Area: Whole counties

County Morgan County, IL

The radar

The Lincoln radar (KILX), 88 km from the middle of the area, began a volume at 22:42 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, 10.7 hours before the alert went out and 145 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: 358 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 172247
FFWILX
ILC137-180200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
542 PM CDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MORGAN COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 900 PM CDT

* AT 537 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN HAS FALLEN ACROSS NORTHWESTERN MORGAN COUNTY...NEAR
CONCORD. 2 TO 3 INCHES OF RAIN HAS BEEN ESTIMATED BY RADAR SINCE 5
PM.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ALONG A LINE
FROM CONCORD...TO JACKSONVILLE...TO FRANKLIN AND NORTONVILLE THROUGH
8 PM. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE
POSSIBLE...ESPECIALLY FROM CONCORD...TO JACKSONVILLE. 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.

$$
FISHER


NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 2:56 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Schuyler	64 min
Jul 17, 3:41 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Schuyler	64 min
Jul 17, 4:42 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan	63 min
Jul 17, 4:51 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	54 min
Jul 17, 5:13 PM CDT	Severe Thunderstorm Warning	ILX	Christian	62 min
Jul 17, 5:45 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	60 min
Jul 17, 5:47 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	28 min
Jul 17, 6:10 PM CDT	Severe Thunderstorm Warning	ILX	Christian	65 min

Nearby

Flash Flood Warnings in Illinois, 2001 Every flash flood warning in 2001

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.