Alert archive / Illinois / Flash Flood Warnings in 2008

Flash Flood Warning 4, NWS St. Louis, MO

February 5, 2008Jersey County, Macoupin County, Illinois

NWS St. Louis, MO issued this flash flood warning at Feb 5, 2008, 4:43 PM CST for Jersey County, Macoupin County, Illinois. It was in force for 5 hr. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Feb 5, 2008, 4:43 PM CST (22:43 UTC)
Expired: Feb 5, 2008, 9:45 PM CST
In force: 5 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Jersey County, IL, Macoupin County, IL

The radar

The St Louis radar (KLSX), 68 km from the middle of the area, began a volume at 22:45 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.

What was reported inside it

Time	Report	Where	Remark
Feb 5, 5:16 PM CST	FLASH FLOOD	3 S Carlinville, IL	BIRD TOWNSHIP. 6 INCHES OF WATER OVER ROADS.
Feb 5, 5:16 PM CST	FLASH FLOOD	Carlinville, IL	BRIAR CREEK FLOODING. MINOR FLOODING THUS FAR ON AREA STREETS.
Feb 5, 5:45 PM CST	HEAVY RAIN 0	Jerseyville, IL	3-4 INCHES OF WATER OVER ROUTE 16.
Feb 5, 9:20 PM CST	FLASH FLOOD	Shipman, IL	FLOODING ON SOME ROADS...SHIPMAN VIADUCT CLOSED...ROUTE 4 NORTH AND SOUTH VIADUCT CLOSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.7 hours before the alert went out and 174 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: 860 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 052246
FFWLSX
ILC083-117-060345-
/O.NEW.KLSX.FF.W.0004.080205T2243Z-080206T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
443 PM CST TUE FEB 5 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JERSEY COUNTY IN SOUTHWEST ILLINOIS
  MACOUPIN COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 945 PM CST

* AT 441 PM CST...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  IN A VIADUCT ON ILLINOIS ROUTE 16 IN SHIPMAN...CLOSING THE ROAD.
  RADAR ESTIMATES UP TO 3 INCHES OF RAIN HAS FALLEN OVER JERSEY AND
  MACOUPIN COUNTIES. AN ADDITIONAL 1 TO 2 INCHES CAN BE EXPECTED OVER
  THE NEXT COUPLE OF HOURS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING WILSONVILLE...VIRDEN...STAUNTON...SHIPMAN...PALMYRA...
  MOUNT OLIVE...KEMPER...JERSEYVILLE...GIRARD...GILLESPIE...
  CARLINVILLE...BUNKER HILL...BRIGHTON AND BENLD.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

LAT...LON 3899 8970 3900 9028 3892 9029 3898 9056
      3910 9061 3918 9057 3918 9052 3916 9051
      3918 9033 3922 9032 3922 9023 3926 9015
      3953 9014 3953 8971 3952 8970
TIME...MOT...LOC 2243Z 180DEG 0KT 3900 9031

$$

BYRD

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 4, 8:45 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	45 min
Feb 4, 8:50 PM CST	River Flood Warning	LSX	Fayette	5 days
Feb 4, 10:57 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	48 min
Feb 4, 11:37 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	38 min
Feb 5, 4:20 AM CST	Winter Weather Advisory	LSX	Adams, Brown	35 hr
Feb 5, 3:36 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	24 min
Feb 5, 3:56 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Madison	35 min

Nearby

Flash Flood Warnings in Illinois, 2008 Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.