Alert archive / Texas / Flash Flood Warnings in 1986
Flash Flood Warning 7, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 10, 1986, 7:09 AM CDT for 4 counties in Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 1986, 7:09 AM CDT (12:09 UTC)
- Expired
- May 10, 1986, 11:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bandera County, TX, Edwards County, TX, Kerr County, TX, Real 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 12:00Z, 0.2 hours before the alert went out and 127 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
- 2567 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 208 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 11.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 101209 FFWSAT TXC019-137-259-265-385-101600- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 709 AM CDT SAT MAY 10 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL TEXAS...BANDERA...EDWARDS...KENDALL...KERR AND REAL AT 7 AM CDT..A LINE OF THUNDERSTORMS WAS LOCATED FROM NORTH OF DEL RIO TO ROCKSPRINGS TO JUNCTION..THEN NORTHEASTWARD INTO CENTRAL TEXAS. THIS LINE WAS MOVING TOWARD THE EAST-SOUTHEAST AT 20 MPH. 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. DANGEROUS LIGHTNING AND GUSTY WINDS OFTEN ACCOMPANY FLASH FLOOD PRODUCING THUNDERSTORMS. SINCE THE GROUND IS SATURATED FROM LOCALLY HEAVY RAINS ON FRIDAY.. ANY ADDITIONAL RAINFALL WILL NOT SOAK IN BUT RUN OFF RAPIDLY INTO ALREADY SWOLLEN OR FLOODED CREEKS AND RIVERS..GREATLY ADDING TO THE THREAT OF FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT TODAY FOR THE HILL COUNTRY.. EDWARDS PLATEAU AND ADJACENT AREAS OF SOUTH CENTRAL TEXAS. 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, May 10, 6:01 AM CDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 545 AM CDT SAT MAY 10 1986 ...DENSE FOG DEVELOPING AROUND THE CAPITAL AREA... YESTERDAYS AND LAST NIGHTS HEAVY RAINS LEFT A RIPE ENVIRONMENT FOR FOG THIS MORNING. MANY SPOTS COULD TEMPORAIRILY EXPERIENCE VISIBILITIES BELOW 1 MILE EARLY THIS MORNING. THE MAIN THREAT OR CONCERN IN TODAYS WEATHER IS NOT NECESSARILY THE FOG. WE HAD VERY HEAVY..FLASH FLOODING RAINS YESTERDAY OVER MANY PARTS OF TRAVIS AND SURROUNDING COUNTIES. THAT TOO LEAVES A DANGEROUS ENVIRONMENT FOR ADDITIONAL FLASH FLOODING..ESPECIALLY IF THE LIKELIHOOD FOR MORE HEAVY THUNDERSTORMS REMAINS FAIRLY HIGH..AND IT DOES TODAY. MANY PEOPLE WILL BE TRYING TO ENJOY OUTDOOR ACTIVITIES..AND THAT PUTS A GREAT MANY OF US IN DANGER OF BEING IN THE WRONG PLACE AT THE WRONG TIME. LAKES..RIVERS..CREEKS AND STREAMS COLLECT THE RUNOFF FROM HEAVY RAINS. BEING ON..NEAR..OR DRIVING BACK AND FORTH ACROSS THEM MIGHT BE HAZARDOUS TO YOUR HEALTH. WATCH THE WEATHER CLOSELY TODAY.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 8:24 PM CDT | Flash Flood Warning | EWX | Burnet, Lampasas, Travis, Williamson | 3 hr |
| May 9, 8:24 PM CDT | Flash Flood Warning | EWX | Bastrop | 3 hr |
| May 10, 7:09 AM CDT | Flash Flood Warning | EWX | Kendall | 4 hr |
| May 10, 7:31 AM CDT | Severe Thunderstorm Warning | EWX | Frio | 59 min |
| May 10, 8:35 AM CDT | Severe Thunderstorm Warning | EWX | Atascosa, McMullen | 55 min |
| May 10, 10:00 AM CDT | Severe Thunderstorm Warning | EWX | Goliad | 60 min |
| May 10, 10:12 AM CDT | Severe Thunderstorm Warning | EWX | Victoria | 63 min |
| May 10, 11:16 AM CDT | Severe Thunderstorm Warning | EWX | Calhoun | 59 min |
| May 10, 11:32 AM CDT | Severe Thunderstorm Warning | EWX | Calhoun, Jackson | 68 min |
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.