Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 25, NWS Corpus Christi, TX

November 20, 2009Aransas County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Nov 20, 2009, 5:07 AM CST for Aransas County, Texas. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 20, 2009, 5:07 AM CST (11:07 UTC)
Expired: Nov 20, 2009, 7:00 AM CST
In force: 113 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Flood severity: None

County Aransas County, TX

The radar

The Corpus Christi radar (KCRP), 50 km from the middle of the area, began a volume at 11:10 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.

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.

NWS Corpus Christi, TX wrote its last area forecast discussion before this flash flood warning went out at Nov 20, 3:52 AM CST, 1 hour 15 minutes earlier.

Area forecast discussion, Nov 20, 3:52 AM CST, 1 hour 15 minutes before

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Hazardous weather outlook, Nov 19, 5:33 AM CST, 23 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
533 AM CST THU NOV 19 2009

GMZ230-235-250-255-270-275-TXZ229>234-239>247-201145-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR-
COASTAL WATERS FROM BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT
20 NM-WATERS FROM BAFFIN BAY TO PORT ARANSAS FROM 20 TO 60 NM-
WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
533 AM CST THU NOV 19 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE
TEXAS COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

A VIGOROUS UPPER LEVEL STORM SYSTEM WILL APPROACH SOUTH TEXAS
FROM THE WEST TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS THIS
EVENING WILL BECOME WIDESPREAD AFTER MIDNIGHT AS THE SYSTEM APPROACHES
AND A SURFACE LOW DEVELOPS ACROSS THE COASTAL PLAINS. ISOLATED STRONG
TO SEVERE THUNDERSTORMS WILL BE POSSIBLE...HOWEVER THE MAIN THREAT
WITH THESE STORMS WILL BE FROM LOCALLY HEAVY RAINFALL. THE STRONGER
STORMS WILL HAVE THE POTENTIAL TO PRODUCE SEVERAL INCHES OF
RAINFALL IN A SHORT PERIOD OF TIME AND LOCALIZED FLOODING WILL BE
POSSIBLE. THE MAIN THREAT FOR HEAVY RAINFALL WILL BE EAST OF
HIGHWAY 281 ACROSS THE COASTAL PLAINS.

STRONG ONSHORE FLOW WILL DEVELOP TONIGHT ACROSS THE GULF WATERS
IN RESPONSE TO LOW PRESSURE DEVELOPING ACROSS THE COASTAL PLAINS.
WINDS ARE EXPECTED TO INCREASE TO 20 TO 25 KNOTS ACROSS THE OPEN
GULF WATERS AND SMALL CRAFT ADVISORIES WILL LIKELY BE REQUIRED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER SOUTH TEXAS THROUGH
FRIDAY AS A VIGOROUS LOW PRESSURE SYSTEM MOVES ACROSS THE REGION.
THE THREAT OF FLOODING WILL INCREASE THROUGH FRIDAY MORNING AS LOCALLY
HEAVY RAINFALL PERSISTS. RAINFALL TOTALS EAST OF INTERSTATE 37
FROM LATE TONIGHT THROUGH FRIDAY ARE EXPECTED TO REACH 3 TO 4
INCHES WITH ISOLATED AMOUNTS AROUND 6 INCHES POSSIBLE. RAINFALL AMOUNTS
WEST OF INTERSTATE 37 ARE FORECAST TO RANGE BETWEEN 1/4 INCH AND 2
INCHES WITH THE LOWER AMOUNTS OCCURRING NEAR THE RIO GRANDE.
ISOLATED 3 TO 4 INCH AMOUNTS WILL BE POSSIBLE ACROSS THE BRUSH
COUNTRY AND RIO GRANDE PLAINS. ISOLATED STRONG AND A VERY LOW
CHANCE OF SEVERE THUNDERSTORMS WILL ALSO CONTINUE FRIDAY MAINLY
ACROSS THE COASTAL PLAINS AND ADJACENT GULF WATERS. THUNDERSTORMS
AND THE THREAT FOR HEAVY RAINFALL WILL END FROM WEST TO EAST
FRIDAY AFTERNOON AND EVENING AS THE LOW PRESSURE SYSTEM MOVES
THROUGH SOUTH TEXAS.

SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TO CONTINUE THROUGH
FRIDAY NIGHT AS SURFACE LOW PRESSURE MOVES EAST OF THE REGION
CAUSING A STRONG OFFSHORE FLOW TO DEVELOP IN ITS WAKE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

MJG/TM

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 19, 7:15 PM CST	Special Marine Warning	CRP		60 min
Nov 19, 8:08 PM CST	Special Marine Warning	CRP		67 min
Nov 19, 8:36 PM CST	Severe Thunderstorm Warning	CRP	Aransas, Calhoun	54 min
Nov 19, 9:05 PM CST	Special Marine Warning	CRP		85 min
Nov 19, 9:08 PM CST	Severe Thunderstorm Warning	CRP	Aransas, Calhoun, Refugio, Victoria	67 min
Nov 19, 9:50 PM CST	Severe Thunderstorm Warning	CRP	Aransas, Calhoun	55 min
Nov 19, 10:19 PM CST	Special Marine Warning	CRP		56 min
Nov 19, 10:55 PM CST	Special Marine Warning	CRP		2 hr
Nov 20, 12:47 AM CST	Special Marine Warning	CRP		88 min
Nov 20, 2:02 AM CST	Special Marine Warning	CRP		88 min
Nov 20, 7:01 AM CST	Areal Flood Warning	CRP	Aransas	3 hr
Nov 20, 8:17 AM CST	Flash Flood Warning	CRP	San Patricio	95 min
Nov 20, 8:31 AM CST	River Flood Warning	CRP	Calhoun, Victoria	8 days
Nov 20, 12:55 PM CST	Flash Flood Warning	CRP	Bee, Goliad	3 hr
Nov 20, 2:51 PM CST	River Flood Warning	CRP	Bee, Nueces, San Patricio	5 hr
Nov 20, 2:51 PM CST	River Flood Warning	CRP	Refugio	5 days
Nov 20, 2:54 PM CST	Flash Flood Warning	CRP	Aransas, Calhoun, Refugio, Victoria	3 hr
Nov 20, 3:10 PM CST	River Flood Warning	CRP	Calhoun, Victoria	5 days
Nov 20, 3:24 PM CST	Small Craft Advisory	CRP		3 hr

Nearby

Flash Flood Warnings in Texas, 2009 Every flash flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.