Alert archive / Texas / Flash Flood Warnings in 1986
Flash Flood Warning 41, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 18, 1986, 6:45 AM CDT for Bandera County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 18, 1986, 6:45 AM CDT (11:45 UTC)
- Expired
- Jun 18, 1986, 10:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Bandera County, TX
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
Del Rio, TX (KDRT), launched 00:00Z, 11.8 hours before the alert went out and 160 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
- 663 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1713 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 181145 FFWSAT TXC019-181500- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 645 AM CDT WED JUN 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTH CENTRAL TEXAS...BANDERA THE BANDERA COUNTY SHERIFFS DEPARTMENT REPORTS NEARLY 4 INCHES OF RAIN HAVE FALLEN SINCE MIDNIGHT AT BANDERA. WEATHER SERVICE RADAR INDICATES HEAVY RAINFALL HAS OCCURRED EAST OF MEDINA IN BANDERA COUNTY. A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR HAS BEEN REPORTED. TAKE NECESSARY PRECAUTIONS AS REQUIRED TO PROTECT LIFE AND PROPERTY. REMEMBER..DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS. IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE. PLEASE LISTEN TO YOUR LOCAL RADIO..TV OR NOAA WEATHER RADIO STATION FOR LATER STATEMENTS OR WARNINGS REGARDING THIS HEAVY RAIN EVENT.
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, Jun 18, 3:00 AM CDT, 3 hours 45 minutes before
KSAT 171912 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 300 AM CDT WED JUN 18 1986 ...SLOW MOVING THUNDERSHOWERS HAVE DEVELOPED OVER BEXAR COUNTY... A 300 AM THIS MORNING THUNDERSHOWERS HAVE DEVELOPED OVER BEXAR COUNTY AND WERE MOVING SLOWLY NORTHWEST AT ABOUT 5 MPH. THE THUNDERSHOWERS WERE MOSTLY OVER THE WESTERN HALF OF BEXAR COUNTY WITH THE HEAVIEST LOCATED OVER THE NORTH PART OF THE COUNTY. BECAUSE OF THE SLOW MOVEMENT OF THESE THUNDERSHOWERS..RAINFALL AMOUNTS COULD BE HEAVY. THEREFORE LOW WATER CROSSINGS AND SMALL CREEKS COULD FLOOD RAPIDLY. MOTORISTS SHOULD EXERCISE EXTREME CAUTION AND NOT TRY TO CROSS FLOODED ROADS. ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY.
Special weather statement, Jun 18, 6:25 AM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
620 AM CDT WED JUN 18 1986
..A LARGE AREA OF HEAVY RAINFALL IS LOCATED SOUTH OF GILLESPIE..BLANCO
AND HAYS COUNTY MOVING SLOWLY NORTHWARD..
THIS LARGE AREA OF RAIN HAS ALREADY PRODUCED TWO TO FOUR INCHES OF
RAINFALL OVER PORTIONS OF BEXAR COUNTY THROUGH THE NIGHT..CAUSING A
FLASH FLOOD WARNING TO BE ISSUED FOR BEXAR COUNTY UNTILL MID MORNING.
AS THIS AREA SPREADS NORTHWARD..PERSONS IN GILLESPIE..BLANCO AND HAYS
COUNTY SHOULD BE ON THE ALERT FOR HEAVY RAINFALL THIS MORNING..THAT MAY
PRODUCE FLASH FLOODING IN LOW LYING AREAS AND LOW WATER CROSSINGS.
ADDITIONAL STATEMENTS WILL BE ISSUED IF NEEDED THIS MORNING.The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 4:26 AM CDT | Flash Flood Warning | EWX | Bexar | 5 hr |
| Jun 18, 8:56 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 18, 9:55 AM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
Nearby
Flash Flood Warnings in Texas, 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.