Alert archive / Illinois / Flash Flood Warnings in 2000

Flash Flood Warning 12, NWS Lincoln, IL

July 11, 2000Logan County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 11, 2000, 12:55 AM CDT for Logan County, Illinois. It was in force for 5 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 11, 2000, 12:55 AM CDT (05:55 UTC)
Expired: Jul 11, 2000, 5:30 AM CDT
In force: 5 hr
Issued by: NWS Lincoln, IL
Area: Whole counties

County Logan County, IL

The radar

The Lincoln radar (KILX), 4 km from the middle of the area, began a volume at 05:59 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, 5.9 hours before the alert went out and 65 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: 3024 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 959 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 110555
FFWILX
ILC107-111030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1255 AM CDT TUE JUL 11 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LOGAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 530 AM CDT

* AT 1252 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED HEAVY RAINS CONTINUING ACROSS LOGAN COUNTY. THE STORMS
  EXTENDED BACK INTO EASTERN IOWA AND WILL LIKELY PRODUCE COPIOUS
  AMOUNTS OF RAINFALL ACROSS LOGAN COUNTY THROUGH 4 AM. RADAR
  ESTIMATES THAT UP TO 1.5 INCHES OF RAIN HAS ALREADY FALLEN ACROSS
  PORTIONS OF LOGAN COUNTY OVERNIGHT.

* RAINFALL AMOUNTS WILL LIKELY TOTAL UP TO 5 INCHES ACROSS
  PORTIONS OF LOGAN COUNTY BY 4 AM. THESE RAINFALL AMOUNTS
  WILL LIKELY PRODUCE FLASH FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLASH FLOODS. IT IS VERY DIFFICULT AT NIGHT TO JUDGE HOW
MUCH WATER COVERS ROADWAYS. DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS.

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

PLAHMER
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 12:18 AM CDT	Flash Flood Warning	ILX	Fulton, Mason	5 hr
Jul 11, 1:15 AM CDT	Flash Flood Warning	ILX	Cass, Menard, Schuyler	5 hr
Jul 11, 1:42 AM CDT	Flash Flood Warning	ILX	Douglas, Edgar	5 hr
Jul 11, 2:06 AM CDT	Flash Flood Warning	ILX	Morgan, Sangamon	5 hr
Jul 11, 3:02 AM CDT	Flash Flood Warning	ILX	Clark, Coles	5 hr
Jul 11, 4:30 AM CDT	Flash Flood Warning	ILX	Crawford, Cumberland, Jasper	6 hr
Jul 11, 8:00 AM CDT	Flash Flood Warning	ILX	Clark, Coles	2 hr

Nearby

Flash Flood Warnings in Illinois, 2000 Every flash flood warning in 2000

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.