Alert archive / Illinois / Flash Flood Warnings in 2008
Flash Flood Warning 93, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 5, 2008, 9:42 PM CDT for Jersey County, Macoupin County, Illinois. It was in force for 4 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 5, 2008, 9:42 PM CDT (02:42 UTC)
- Expired
- Aug 6, 2008, 1:45 AM CDT
- In force
- 4 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), 65 km from the middle of the area, began a volume at 02:44 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, 2.7 hours before the alert went out and 176 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.
- Mixed-layer CAPE
- 1853 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLSX 060242
FFWLSX
ILC083-117-060645-
/O.NEW.KLSX.FF.W.0093.080806T0242Z-080806T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
942 PM CDT TUE AUG 5 2008
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS
SOUTHWESTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS
* UNTIL 145 AM CDT
* AT 930 PM CDT...MACOUPIN COUNTY EMERGENCY MANAGEMENT AGENCY
REPORTED THAT HIGHWAY 111 WAS CLOSED ABOUT 4 MILES SOUTH OF PIASA
DUE TO FLOODING. RADAR ESTIMATED THAT OVER 2 INCHES OF RAIN
FELL IN THIS AREA EARLIR TUESDAY EVENING.
* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
AFFECTING MEDORA...PIASA...AND FIDELITY.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
LAT...LON 3905 8999 3904 9033 3918 9033 3918 9032
3918 8999
$$
TRUETT1 follow-up statement
000
WGUS73 KLSX 060641
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
141 AM CDT WED AUG 6 2008
ILC083-117-060651-
/O.EXP.KLSX.FF.W.0093.000000T0000Z-080806T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JERSEY IL-MACOUPIN IL-
141 AM CDT WED AUG 6 2008
...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 AM CDT FOR SOUTHWESTERN
MACOUPIN AND EASTERN JERSEY COUNTIES...
A CHECK WITH AREA LAW ENFORCEMENT INDICATES THAT FLOODING IS NO
LONGER A PROBLEM IN THE AREA.
LAT...LON 3905 8999 3904 9033 3918 9033 3918 9032
3918 8999
$$
TESThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 7:06 PM CDT | Tornado Warning | LSX | Bond, Fayette, Montgomery | 39 min |
| Aug 5, 7:09 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 51 min |
| Aug 5, 7:33 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 42 min |
| Aug 5, 7:43 PM CDT | Tornado Warning | LSX | Fayette | 17 min |
| Aug 5, 7:47 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair, Washington | 13 min |
| Aug 5, 7:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Monroe and 3 more | 64 min |
| Aug 5, 8:18 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 42 min |
Nearby
Flash Flood Warnings in Illinois, 2008Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.