Alert archive / Missouri / Flash Flood Warnings in 1998
Flash Flood Warning 14, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 4, 1998, 2:36 AM CDT for 4 counties in Missouri. 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 4, 1998, 2:36 AM CDT (07:36 UTC)
- Expired
- Jul 4, 1998, 7:30 AM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Marion County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 07:38 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
Davenport, (KDVN), launched 00:00Z, 7.6 hours before the alert went out and 244 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
- 1700 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1022 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 040737 FFWSTL MOC103-127-137-163-173-205-041230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 236 AM CDT SAT JUL 4 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... KNOX COUNTY IN NORTHEASTERN MISSOURI MARION COUNTY MISSOURI IN NORTHEASTERN MISSOURI MONROE COUNTY MISSOURI IN NORTHEASTERN MISSOURI PIKE COUNTY MISSOURI IN NORTHEASTERN MISSOURI RALLS COUNTY IN NORTHEASTERN MISSOURI SHELBY COUNTY IN NORTHEASTERN MISSOURI * UNTIL 730 AM CDT * AT 230 AM CDT...A CLUSTER OF HEAVY RAIN PRODUCING THUNDERSTORMS EXTENDED FROM NEAR KIRKSVILLE TO EDINA TO SHELBINA TO BOWLING GREEN...MOVING TO THE SOUTHEAST AT 20 MPH. * RADAR ESTIMATES INDICATED ONE TO THREE INCHES OF RAIN HAS FALLEN ACROSS THE MISSOURI COUNTIES OF KNOX...SHELBY...RALLS...PIKE... MONROE...AND RALLS. ANOTHER ONE TO FOUR INCHES OF RAINFALL CAN BE EXPECTED THROUGH 730 AM CDT IN THESE AREAS. IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD... ESPECIALLY LOW-WATER BRIDGES BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW DEEP THE WATER MAY BE. MOTORISTS SHOULD NEVER DRIVE THROUGH WATER OF UNKNOWN DEPTH. METZE
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 11:40 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 65 min |
| Jul 4, 2:36 AM CDT | Flash Flood Warning | LSX | Pike | 5 hr |
| Jul 4, 2:36 AM CDT | Flash Flood Warning | LSX | Knox | 5 hr |
| Jul 4, 7:38 AM CDT | Flash Flood Warning | LSX | Audrain, Monroe | 3 hr |
| Jul 4, 7:38 AM CDT | Flash Flood Warning | LSX | Knox, Shelby | 3 hr |
| Jul 4, 7:38 AM CDT | Flash Flood Warning | LSX | Audrain, Monroe | 3 hr |
| Jul 4, 7:38 AM CDT | Flash Flood Warning | LSX | Knox, Shelby | 3 hr |
| Jul 4, 9:02 AM CDT | Flash Flood Warning | LSX | Callaway, Cole, Osage | 5 hr |
| Jul 4, 9:02 AM CDT | Flash Flood Warning | LSX | Boone, Moniteau | 5 hr |
| Jul 4, 11:04 AM CDT | Flash Flood Warning | LSX | Monroe, Shelby | 3 hr |
| Jul 4, 11:04 AM CDT | Flash Flood Warning | LSX | Audrain | 3 hr |
Nearby
Flash Flood Warnings in Missouri, 1998Every flash flood warning in 1998
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.