Alert archive / Missouri / Flash Flood Warnings in 1998
Flash Flood Warning 50, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Oct 5, 1998, 2:50 PM CDT for Boone County, Callaway County, Missouri. It was in force for 3 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
- Oct 5, 1998, 2:50 PM CDT (19:50 UTC)
- Expired
- Oct 5, 1998, 5:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Boone County, MO, Callaway County, MO
The radar
The St Louis radar (KLSX), 127 km from the middle of the area, began a volume at 19:52 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
Springfield, MO (KSGF), launched 12:00Z, 7.8 hours before the alert went out and 268 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
- 263 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 352 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 051952 FFWSTL MOC019-027-052230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 250 PM CDT MON OCT 5 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... BOONE COUNTY IN CENTRAL MISSOURI CALLAWAY COUNTY IN CENTRAL MISSOURI * UNTIL 530 PM CDT * ALTHOUGH THE HEAVY RAINS HAVE SUBSIDED ACROSS MID-MISSOURI... FLOODING PERSISTS IN SOME AREAS FROM THE DOWNPOURS OF THIS MORNING. * BLACKSOOT ROAD SOUTH OF COLUMBIA REMAINS IMPASSABLE. THE INTERSECTION OF RANGELINE AND BEN WILLIAMS ROAD IS ALSO UNDER WATER IN BOONE COUNTY...AND IS IMPASSABLE. IN CALLAWAY COUNTY... SEVERAL ROADS BETWEEN HOLTS SUMMIT AND PORTLAND ARE IMPASSABLE DUE TO HIGH WATER. SPECIFICALLY...HIGHWAY 94 SOUTH AND MOKANE IS IMPASSABLE. ALSO...HIGHWAY Z SOUTHWEST CALWOOD IS PASSBLE...BUT UNDER WATER. LIGHT TO OCCASIONALLY MODERATE RAIN WILL LINGER ACROSS THE AREA THROUGHOUT THE AFTERNOON. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW-WATER CROSSINGS IF WATER COVERS THE ROAD. DO NOT DRIVE AROUND BARRICADES. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. RAPIDLY RISING WATER MAY SWEEP THE VEHICLE AND ITS OCCUPANTS AWAY. TRUETT/RP/CA &
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 5, 8:50 AM CDT | Flash Flood Warning | LSX | Moniteau | 4 hr |
| Oct 5, 9:11 AM CDT | Flash Flood Warning | LSX | Knox | 4 hr |
| Oct 5, 10:18 AM CDT | Flash Flood Warning | LSX | Boone, Callaway, Cole | 4 hr |
| Oct 5, 10:18 AM CDT | Flash Flood Warning | LSX | Lewis, Monroe, Shelby | 4 hr |
| Oct 5, 10:18 AM CDT | Flash Flood Warning | LSX | Audrain | 4 hr |
| Oct 5, 12:43 PM CDT | Flash Flood Warning | LSX | Moniteau | 3 hr |
| Oct 5, 3:52 PM CDT | Flash Flood Warning | LSX | Moniteau | 4 hr |
| Oct 5, 5:40 PM CDT | Flash Flood Warning | LSX | Boone, Callaway | 10 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.