Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 68, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 11, 1987, 10:45 AM CDT for Guadalupe County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 1987, 10:45 AM CDT (15:45 UTC)
- Expired
- Jun 11, 1987, 1:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Guadalupe 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
Victoria Regiona, TX (KVCT), launched 12:00Z, 3.8 hours before the alert went out and 130 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
- 428 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 515 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -17 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 KSAT 111545
FFWSAT
TXC187-111845-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1045 AM CDT THU JUN 11 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 145 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...GUADALUPE
NATIONAL WEATHER SERVICE RADAR INDICATES VERY HEAVY RAIN OVER MUCH OF
GUADALUPE COUNTY. SHOWERS AND THUNDERSHOWERS ARE MOVING NORTH ACROSS
THE COUNTY WITH ADDITIONAL DEVELOPMENT OCCURRING TO THE SOUTH OF THE
COUNTY. RAINFALL AMOUNTS IN EXCESS OF ONE INCH PER HOUR ARE POSSIBLE
IN THE HEAVIER SHOWERS AND THUNDERSHOWERS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED.
REMEMBER...DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO
MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS OR FROM CHILDREN
PLAYING NEAR FLOODED STREAMS OR DRAINAGE AREAS.
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 SEVERE WEATHER 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 11, 4:54 AM CDT, 5 hours 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 500 AM CDT THU JUN 11 1987 ...NUMEROUS SHOWERS REFORMING TO THE SOUTH AND MOVING NORTHWARD AT 20 MPH... JUST BEFORE 5 AM...RADAR SHOWED SEVERAL SPOTS WITH RAINFALL RATES OF 1/2 TO 1 INCH PER HOUR. ONE JUST SOUTH OF SEGUIN AND OTHERS NEAR VICTORIA AND GOLIAD. LIGHT RAINS COVER ABOUT 50 PERCENT OF THE NEARBY HILL COUNTRY SOUTHWEST THROUGH NORTHWEST OF AUSIN. THROUGHOUT THE EARLY MORNING HOURS, SEVERAL FAIRLY HEAVY SHOWERS PASSED OVER PARTS OF HAYS...BLANCO AND GILLESPIE COUNTIES. THOSE RIVERS...STREAMS AND CREEKS WERE ALREADY RUNNING FULL AND MANY LOW WATER CROSSING MAY BE TEMPORAIRILY FLOODED THIS MORNING. ...THE FLASH FLOWOD WATCH CONTINUES...
Special weather statement, Jun 11, 6:08 AM CDT, 4 hours 37 minutes before
RAINFALL REPORT FOR BEXAR AND SURROUNDING COUNTIES..7 PM JUNE 9 THROUGH 7 PM JUNE 10 1987..BEXAR COUNTY HAM RADIO NETWORK REPORTS NATIONAL WEATHER SERVICE SAN ANTONIO TX 600 AM CDT THU JUN 11 1987 OUTSIDE BEXAR COUNTY.... SMITHSON VALLEY 1.60 MEDINA LAKE 1.30 BOERNE 7E 4.10 PIPE CREEK 1.62 DEVINE 1.40 MEDINA 12W 1.33 HONDO 10N 1.22 INSIDE BEXAR COUNTY..... NORTH SIDE CENTRAL AREA UTSA..1604 2.50 EDISON HS 0.85 NR FT SAM .79 AIRPORT 4N 2.10 HOLLYWOOD PK 1.25 TRINITY U .73 ALAMO STADIUM 1.10 I 10..FRESNO 0.70 BLANCO..410 0.85 ENCINO PK 1.50 BULVERDE 1.10 HELOTES 3.10 NORTHWEST SIDE WEST SIDE CASTLE HILLS 1.10 ROLLING RIDGE 2.65 CULEBRA..GRISSOM .90 CHARTER OAKS 1.53 T.BIRD HILLS .90 HWY 90..410 1.35 CUOEBRA PK 1.10 UNIVERSITY PK 1.60 LACKLAND 1.15 GLENOAKS PK 2.30 VANCE JKSN..410 1.75 HIDDEN MEADOWS 2.25 LEON VALLEY 1.00 WOODLAWN HTS 1.20 SOUTHEAST SIDE NORTHEAST SIDE FT SAM 1N 1.30 I 35..RITTIMAN 1.10 HIGHLAND HILLS 1.25 NORTHWOOD ESTATES 1.60 PECAN VALLEY 1.00 WINDCREST .70 VON ORMY 1.40 WURZBACH..I 35 1.85 CHINA GROVE 1.69 ALAMO HTS 1.57
Special weather statement, Jun 11, 6:31 AM CDT, 4 hours 14 minutes before
BULLETIN SMALL STREAM AND URBAN FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 630 AM CDT THU JUN 11 1987 SCATTERED SHOWERS HAVE PERSISTED OVER THE WESTERN PORTION OF BEXAR COUNTY SINCE APPROXIMATELY 530 AM THIS MORNING. THE ACTIVITY HAS PRODUCED LIGHT TO MODERATE RAIN MOST OF THIS TIME...WITH BRIEF PERIODS OF HEAVIER RAINFALL. ALTHOUGH INDIVIDUAL SHOWERS WERE MOVING NORTH AT NEAR 15 MILES AN HOUR...THEY CONTINUE TO MOVE ACROSS THE SAME AREA. BOTH THE BEXAR COUNTY SHERIFFS DEPARTMENT AND SAN ANTONIO POLICE DEPARTMENTS INDICATE NO SIGNIFICANT PROBLEMS AT THIS TIME. HOWEVER...A CONTINUATION OF THIS RAIN WILL CAUSE LOW LYING AND POORLY DRAINED AREAS IN THE WESTERN PORTION OF THE COUNTY TO BEGIN TO COLLECT WATER. MOTORISTS SHOULD NOT ATTEMPT TO CROSS FLOODED STREETS...DRIVE INTO DEEP WATER OR CROSS FLOODED LOW WATER CROSSINGS. THEY SHOULD USE EXTRA CAUTION DURING THE MORNING RUSH HOUR AS COMPLICATIONS FROM THE RAIN... SLICK STREETS AND REDUCED VISIBILITY...MAKE DRIVING EVEN MORE DIFFICULT. A FLASH FLOOD AND FLOOD WATCH REMAINS IN EFFECT TODAY FOR THE HILL COUNTRY...EDWARDS PLATEAU...SOUTH CENTRAL AND SOUTHEAST TEXAS. THIS INCLUDES THE SAN ANTONIO METROPOLITAN AREA...AS WELL AS BEXAR AND SURROUNDING COUNTIES. PLEASE LISTEN FOR UPDATED STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS HEAVY RAIN AND FLOOD THREAT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:09 PM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Jun 11, 11:14 AM CDT | Flash Flood Warning | EWX | Bexar | 106 min |
| Jun 11, 12:55 PM CDT | Flash Flood Warning | EWX | Bexar | 2 hr |
| Jun 11, 6:47 PM CDT | Flash Flood Warning | EWX | Real | 3 hr |
Nearby
Flash Flood Warnings in Texas, 1987Every flash flood warning in 1987
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.