Alert archive / Illinois / Flash Flood Warnings in 2009
Flash Flood Warning 22, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at May 25, 2009, 3:06 PM CDT for Macoupin County, Illinois. It was in force for 6 hr. 3 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
- May 25, 2009, 3:06 PM CDT (20:06 UTC)
- Expired
- May 25, 2009, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Macoupin County, IL
The radar
The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 20:06 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 |
|---|---|---|---|
| May 25, 4:00 PM CDT | FLASH FLOOD | Bunker Hill, IL | MACOUPIN COUNTY S.O. RELAYED INFO THAT ALL ROADS IN AND OUT OF BUNKER HILL WERE CLOSED FOR A WHILE THIS AFTERNOON...BUT ARE NOW OPEN. S.O. ALSO STATED THAT WATER WAS UP TO THE BOTTOM OF VEHICLE DOORS EARLIER BUT BUNKER HILL IS STILL EXPERIENCING FLOODING. |
| May 25, 4:33 PM CDT | HEAVY RAIN 2.58 | 2 Wsw Staunton, IL | 1.76 INCHES IN PAST HOUR...STANDING WATER IN FIELDS AND STREET FLOODING OBSERVED |
| May 25, 7:50 PM CDT | HEAVY RAIN 4.25 | 5 Ene Dorsey, IL |
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, 8.1 hours before the alert went out and 154 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KLSX 252006 FFWLSX ILC117-260200- /O.NEW.KLSX.FF.W.0022.090525T2006Z-090526T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 306 PM CDT MON MAY 25 2009 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS * UNTIL 900 PM CDT * AT 257 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES OF 2 TO 4 INCHES HAVE FALLEN SINCE LATE THIS MORNING. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CARLINVILLE...GILLESPIE...STAUNTON...BENLD...BRIGHTON...BUNKER HILL...MOUNT OLIVE...SHIPMAN AND WILSONVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED AREA. FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES... DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE. A FLASH FLOOD WARNING 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. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. && LAT...LON 3931 8972 3900 8971 3900 9015 3931 9015 $$ MILLER
1 follow-up statement
000 WGUS73 KLSX 260201 FFSLSX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 801 PM CDT MON MAY 25 2009 ILC117-260214- /O.EXP.KLSX.FF.W.0022.000000T0000Z-090526T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MACOUPIN IL- 801 PM CDT MON MAY 25 2009 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN MACOUPIN COUNTY WILL BE ALLOWED TO EXPIRE AT 900 PM CDT... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 3931 8972 3900 8971 3900 9015 3931 9015 $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 11:00 AM CDT | Areal Flood Advisory | LSX | Madison | 6 hr |
| May 25, 11:55 AM CDT | Flash Flood Warning | LSX | Madison | 5 hr |
| May 25, 1:38 PM CDT | Tornado Warning | LSX | Macoupin | 37 min |
| May 25, 2:16 PM CDT | Tornado Warning | LSX | Madison | 29 min |
| May 25, 3:34 PM CDT | Areal Flood Advisory | LSX | Bond, Fayette, Montgomery | 6 hr |
| May 25, 5:00 PM CDT | Areal Flood Warning | LSX | Madison | 6 hr |
| May 25, 5:09 PM CDT | Areal Flood Warning | LSX | Madison | 6 hr |
Nearby
Flash Flood Warnings in Illinois, 2009Every flash flood warning in 2009
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.