Alert archive / Missouri / Flash Flood Warnings in 1986
Flash Flood Warning 18, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Oct 3, 1986, 4:48 AM CDT for Lewis County, Missouri; Adams County, Illinois. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 3, 1986, 4:48 AM CDT (09:48 UTC)
- Expired
- Oct 3, 1986, 9:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Lewis County, MO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 00:00Z, 9.8 hours before the alert went out and 172 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
- 10 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 030948 FFWSTL MOC111-127-137-173-205-ILC001-031400- BULLETIN - EBS ACTIVATION AND IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 448 AM CDT FRI OCT 3 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 900 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST MISSOURI...LEWIS...SHELBY...MARION...MONROE...RALLS WEST CENTRAL ILLINOIS...ADAMS AT 445 AM CDT SCATTERED REPORTS AND ESTIMATES FROM RADAR AND SATELLITE DATA INDICATED MODERATE TO HEAVY RAIN OVER NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. RAINFALL HAS BEEN HEAVY ENOUGH TO CAUSE WIDESPREAD FLOODING OF SMALL STREAMS...ROADS AND LOW LYING AREAS IN SEVERAL COUNTIES. BE ALERT FOR RAPIDLY RISING WATER. STAY AWAY FROM FLOODING CREEKS... STREAMS AND STORM DRAINS. DO NOT ATTEMPT TO WALK OR DRIVE THROUGH FLOWING WATER. MCCARTHY
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Oct 3, 4:14 AM CDT, 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 415 AM CDT FRI OCT 3 1986 ...A TORNADO WATCH IS IN EFFECT FROM PARTS OF SOUTHWEST TO EAST CENTRAL MISSOURI UNTIL 7 AM...AND A FLASH FLOOD WATCH IS POSTED FOR MOST OF SOUTHWEST...CENTRAL AND NORTHEAST MISSOURI TODAY... AT 405 AM CDT...RADAR SHOWED A SMALL CLUSTER OF STRONG THUNDERSTORMS IN CENTRAL MISSOURI BETWEEN KINGDOM CITY AND JEFFERSON CITY MOVING NORTHEAST AT 30 MPH. THESE STORMS HAVE WEAKENED SINCE PRODUCING SCATTERED WIND DAMAGE EARLIER THIS MORNING WEST OF JEFFERSON CITY AND THE LAKE OF THE OZARKS. THE STRONG STORMS IN THE CENTER OF THE STATE WERE PART OF A MUCH LARGER AREA OF RAIN...SOME HEAVY...THAT STRET\CHED FROM WEST CENTRAL MISSOURI...INTO NORTHEAST AND EAST CENTRAL MISSOURI. NEW RAIN SHOWERS WERE DEVELOPING OVER PARTS OF THE OZARKS REGION OF SOUTH CENTRAL MISSOURI AT 405 AM. MCCARTHY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 2, 9:53 PM CDT | Flash Flood Warning | LSX | Marion, Monroe, Ralls, Shelby | 3 hr |
| Oct 2, 9:53 PM CDT | Flash Flood Warning | LSX | Lewis | 3 hr |
| Oct 3, 1:09 AM CDT | Flash Flood Warning | LSX | Marion, Monroe, Shelby | 3 hr |
| Oct 3, 1:09 AM CDT | Flash Flood Warning | LSX | Pike, Ralls | 3 hr |
| Oct 3, 4:48 AM CDT | Flash Flood Warning | LSX | Marion, Monroe, Ralls, Shelby | 4 hr |
| Oct 3, 5:12 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 48 min |
| Oct 3, 6:42 PM CDT | Flash Flood Warning | LSX | Saint Charles, Saint Louis, Warren | 2 hr |
| Oct 3, 6:42 PM CDT | Flash Flood Warning | LSX | City of Saint Louis | 2 hr |
| Oct 2, 9:53 PM CDT | Flash Flood Warning | LSX | Adams, Brown, Pike | 3 hr |
| Oct 3, 1:09 AM CDT | Flash Flood Warning | LSX | Adams | 3 hr |
Nearby
Flash Flood Warnings in Missouri, 1986Flash Flood Warnings in Illinois, 1986Every flash flood warning in 1986
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.