Alert archive / Missouri / Flash Flood Warnings in 2008
Flash Flood Warning 66, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 20, 2008, 12:01 PM CDT for Saint Charles County, Missouri. It was in force for 6 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
- Jun 20, 2008, 12:01 PM CDT (17:01 UTC)
- Expired
- Jun 20, 2008, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Saint Charles County, MO
The radar
The St Louis radar (KLSX), 19 km from the middle of the area, began a volume at 17:03 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, 5.0 hours before the alert went out and 225 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
- 2301 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 39 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 201709
FFWLSX
MOC183-202300-
/O.NEW.KLSX.FF.W.0066.080620T1701Z-080620T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1201 PM CDT FRI JUN 20 2008
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
* UNTIL 600 PM CDT
* AT 1157 AM CDT...ST. CHARLES COUNTY EMERGENCY MANAGEMENT REPORTED
OVERTOPPING ON THE HIGHWAY C LEVEE NEAR THE MISSISSIPPI RIVER...
WHICH WILL IMPACT AREAS IN NORTH CENTRAL ST. CHARLES COUNTY.
* GRADUAL INUNDATION CAN BE EXPECTED TO INUNDATE THE AREA WITH
WATER...WITH A LEVEE FAILURE POSSIBLE WITHIN 36 HOURS. THE AREA
AFFECTED WILL BE BOUND BETWEEN THE MISSISSIPPI RIVER TO THE NORTH
AND SALT RIVER ROAD TO THE SOUTH AND SOUTHWEST...AND THE AREA JUST
EAST OF HIGHWAY 79 IN THE WEST AND DARDENNE CREEK TO THE EAST.
AGAIN...A GRADUAL INUNDATION OF WATER IS EXPECTED AT THIS TIME...BUT
IF A LEVEE FAILURE BECOMES A REALITY...MUCH QUICKER INUNDATION WILL
OCCUR. INCORPORATED AREAS OF ST. PETERS ARE NOT EXPECTED TO BE
AFFECTED AT THIS TIME...BUT SILVERS ROAD AND COUNTY HIGHWAY C WILL
FLOOD IN THE WARNED AREA...IN UNINCORPORATED ST. CHARLES COUNTY.
LAT...LON 3889 9064 3887 9061 3887 9056 3884 9057
3880 9062 3881 9069 3888 9068 3890 9065
TIME...MOT...LOC 1701Z 180DEG 0KT 3885 9063
$$
TES1 follow-up statement
000
WGUS73 KLSX 202311
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
603 PM CDT FRI JUN 20 2008
MOC183-202313-
/O.EXP.KLSX.FF.W.0066.000000T0000Z-080620T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. CHARLES MO-
603 PM CDT FRI JUN 20 2008
...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTH CENTRAL ST. CHARLES
COUNTY...
WHILE THE FLASH FLOOD WARNING HAS EXPIRED...THE RIVER FLOOD WARNING
REMAINS IN EFFECT UNTIL FURTHER NOTICE IN ST. CHARLES COUNTY. FLOOD
WATER CONTINUES TO OVERTOP THE HIGHWAY C LEVEE NEAR THE MISSISSIPPI
RIVER TO THE NORTH OF ST. PETERS. A GRADUAL INUNDATION OF WATER IS
EXPECTED TO CONTINUE BETWEEN THE MISSISSIPPI RIVER AND SALT RIVER
ROAD BETWEEN HIGHWAY 79 AND DARDENNE CREEK. INCORPORATED AREAS OF
ST. PETERS ARE NOT EXPECTED TO BE AFFECTED AT THIS TIME...BUT
SILVERS ROAD AND COUNTY HIGHWAY C WILL FLOOD IN UNINCORPORATED ST.
CHARLES COUNTY.
LAT...LON 3889 9064 3887 9061 3887 9056 3884 9057
3880 9062 3881 9069 3888 9068 3890 9065
TIME...MOT...LOC 1701Z 180DEG 0KT 3884 9063
$$
BRITTNearby
Flash Flood Warnings in Missouri, 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.