Alert archive / Texas / Flash Flood Warnings in 2019

Flash Flood Warning 47, NWS Houston/Galveston, TX

September 19, 2019Liberty County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Sep 19, 2019, 4:59 AM CDT for Liberty County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 19, 2019, 4:59 AM CDT (09:59 UTC)
Expired
Sep 19, 2019, 7:15 AM CDT
In force
2 hr
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

County Liberty County, TX

The radar

The Houston radar (KHGX), 80 km from the middle of the area, began a volume at 10:00 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.0 hours before the alert went out and 155 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2019-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 799 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2019-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
799 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 18, 11:48 PM CDT, 5 hours 11 minutes earlier.

Area forecast discussion, Sep 18, 11:48 PM CDT, 5 hours 11 minutes before
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Hazardous weather outlook, Sep 18, 5:43 AM CDT, 23 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
543 AM CDT Wed Sep 18 2019

TXZ163-176-195>198-210>212-235-335-191045-
Austin-Brazos-Burleson-Coastal Jackson-Colorado-Grimes-Houston-
Inland Jackson-Madison-Waller-Washington-
543 AM CDT Wed Sep 18 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight
Brief heavy rain may be possible through this evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
Brief heavy rain may develop Thursday into Thursday night shifting
north with time. Otherwise no hazardous weather is expected at
this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

TXZ164-177>179-199-200-213-226-227-236>238-300-313-336>338-436-
437-191045-
Brazoria Islands-Coastal Brazoria-Coastal Galveston-
Coastal Harris-Coastal Matagorda-Fort Bend-Inland Brazoria-
Inland Galveston-Inland Harris-Inland Matagorda-Matagorda Islands-
Montgomery-Northern Liberty-Polk-San Jacinto-Southern Liberty-
Trinity-Walker-Wharton-
543 AM CDT Wed Sep 18 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight
Flash flood watch in effect. Strong thunderstorms with heavy
downpours are likely today through tonight. Rainfall rates of 2 to
4 inches per hour will accompany the storms and flooding will be
possible after yesterday's storms got the ground wet or saturated
in some areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
The threat of heavy rain will be possible Thursday and possibly
into Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

GMZ335-TXZ214-438-191045-
Chambers-Galveston Bay-Galveston Island and Bolivar Peninsula-
543 AM CDT Wed Sep 18 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight
Flash flood watch in effect. Strong thunderstorms with heavy
downpours are likely today through tonight. Rainfall rates of 2 to
4 inches per hour will accompany the storms and flooding will be
possible after yesterday's storms got the ground wet or saturated
in some areas. Strong thunderstorms may be capable of waterspouts
and even brief tornadoes today. Strong gusty winds in excess of 40
knots may accompany some of the strongest storms.

Strong rip currents will continue today. Elevated tide levels
will leading to beach flooding near times of high tide.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
The threat of heavy rain will be possible Thursday and possibly
into Friday.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

GMZ330-350-355-370-375-191045-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
Matagorda Bay-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
543 AM CDT Wed Sep 18 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight
Elevated tides and currents will prevail. Waterspouts will be
possible this morning throughout the afternoon in the stronger
storms that will be focused over the area.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
Elevated tide levels and stronger currents can be expected through
Friday.

.SPOTTER INFORMATION STATEMENT...

Marine spotter activation may be needed.

In the hours before

Local storm report, Sep 19, 3:42 AM CDT, 1 hour 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
342 AM CDT THU SEP 19 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 AM     FLASH FLOOD      1 NNW WINNIE            29.83N 94.39W
09/19/2019                   CHAMBERS           TX   EMERGENCY MNGR

            I 10 FRONTAGE RD AT HWY 124 WAS REPORTED
            CLOSED AND UNSAFE TO TRAVEL.

&&

JPF
Local storm report, Sep 19, 3:43 AM CDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
343 AM CDT THU SEP 19 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 AM     FLASH FLOOD      6 W STOWELL             29.79N 94.49W
09/19/2019                   CHAMBERS           TX   EMERGENCY MNGR

            ROADS NORTH AND EAST OF FM 1410 AND FM 1941
            AREA CLOSED AND ARE UNSAFE TO TRAVEL ON.

&&

JPF
Local storm report, Sep 19, 3:46 AM CDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
346 AM CDT THU SEP 19 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0242 AM     FLASH FLOOD      WINNIE                  29.82N 94.38W
09/19/2019                   CHAMBERS           TX   EMERGENCY MNGR

            RICELAND HOSPITAL WAS EVACUATED DUE TO
            FLOODING.

&&

JPF
Local storm report, Sep 19, 3:56 AM CDT, 1 hour 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
356 AM CDT THU SEP 19 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0353 AM     FLASH FLOOD      LIBERTY                 30.07N 94.78W
09/19/2019                   LIBERTY            TX   LAW ENFORCEMENT

            MULTIPLE ROAD ACROSS LIBERTY COUNTY ARE
            IMPASSABLE. THESE INCLUDE, BUT NOT LIMITED
            TO FM 1010, FM 1008 AT COUNTY ROAD 2313, FM
            1008 AT COUNTY ROAD 2285, AND COUNTY ROAD
            379.

&&

JPF

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 18, 7:15 PM CDTFlash Flood WarningHGXChambers, Galveston, Harris60 min
Sep 18, 7:28 PM CDTAreal Flood AdvisoryHGXChambers, Harris, Liberty2 hr
Sep 18, 7:32 PM CDTAreal Flood WarningHGXGalveston3 hr
Sep 18, 7:44 PM CDTFlash Flood WarningHGXChambers, Liberty2 hr
Sep 18, 8:14 PM CDTAreal Flood WarningHGXChambers, Fort Bend, Harris61 min
Sep 18, 9:46 PM CDTFlash Flood WarningHGXChambers, Liberty59 min
Sep 18, 10:41 PM CDTFlash Flood WarningHGXChambers, Liberty64 min
Sep 18, 11:38 PM CDTFlash Flood Warning EmergencyHGXChambers, Liberty8 hr
Sep 19, 12:16 AM CDTAreal Flood AdvisoryHGXHarris, Liberty, Montgomery59 min
Sep 19, 1:24 AM CDTSmall Craft AdvisoryHGX9 hr
Sep 19, 1:28 AM CDTAreal Flood AdvisoryHGXChambers, Harris, Liberty, Montgomery2 hr
Sep 19, 2:20 AM CDTFlash Flood WarningHGXHarris, Liberty, Montgomery115 min
Sep 19, 2:56 AM CDTRiver Flood WarningHGXHarris, Montgomery63 hr
Sep 19, 4:15 AM CDTFlash Flood WarningHGXChambers, Harris, Liberty, Montgomery, San Jacinto3 hr
Sep 19, 5:32 AM CDTFlash Flood WarningHGXMontgomery118 min
Sep 19, 5:44 AM CDTRiver Flood WarningHGXLiberty4 days
Sep 19, 6:04 AM CDTSpecial Weather StatementHGXMontgomery41 min
Sep 19, 6:41 AM CDTTornado WarningHGXChambers21 min
Sep 19, 7:00 AM CDTFlash Flood Warning EmergencyHGXChambers, Liberty, Montgomery, San Jacinto7 hr
Sep 19, 7:18 AM CDTFlash Flood WarningHGXHarris, Liberty, Montgomery4 hr
Sep 19, 7:37 AM CDTSevere Thunderstorm WarningHGXHarris, Liberty, Montgomery38 min
Sep 19, 8:10 AM CDTRiver Flood WarningHGXHarris, Montgomery21 hr
Sep 19, 8:12 AM CDTRiver Flood WarningHGXHarris, Liberty, Montgomery, San Jacinto33 hr
Sep 19, 8:26 AM CDTFlash Flood WarningHGXChambers, Harris, Liberty3 hr
Sep 19, 8:27 AM CDTRiver Flood WarningHGXChambers, Harris, Liberty3 days
Sep 19, 8:33 AM CDTSpecial Marine WarningHGX87 min
Sep 19, 8:50 AM CDTFlash Flood Warning EmergencyHGXChambers, Harris, Liberty, Montgomery5 hr
Sep 19, 9:12 AM CDTFlash Flood WarningHGXHarris, Montgomery3 hr
Sep 19, 9:25 AM CDTSpecial Weather StatementHGXChambers, Harris65 min
Sep 19, 10:02 AM CDTFlash Flood Warning EmergencyHGXHarris118 min
Sep 19, 10:12 AM CDTRiver Flood WarningHGXHarris, Montgomery44 hr
Sep 19, 10:20 AM CDTAreal Flood AdvisoryHGXGalveston115 min
Sep 19, 10:20 AM CDTSmall Craft AdvisoryHGX9 hr
Sep 19, 10:28 AM CDTRiver Flood WarningHGXHarris18 hr
Sep 19, 10:30 AM CDTFlash Flood WarningHGXHarris3 hr
Sep 19, 10:41 AM CDTRiver Flood WarningHGXHarris18 hr
Sep 19, 10:41 AM CDTRiver Flood WarningHGXHarris36 hr
Sep 19, 10:41 AM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 10:46 AM CDTSpecial Marine WarningHGX119 min
Sep 19, 10:47 AM CDTFlash Flood WarningHGXChambers, Galveston31 min
Sep 19, 11:01 AM CDTRiver Flood WarningHGXHarris18 hr
Sep 19, 11:16 AM CDTFlash Flood WarningHGXBrazoria, Chambers, Galveston3 hr
Sep 19, 11:17 AM CDTRiver Flood WarningHGXHarris27 hr
Sep 19, 11:17 AM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 11:38 AM CDTFlash Flood WarningHGXChambers, Harris, Liberty112 min
Sep 19, 11:45 AM CDTRiver Flood WarningHGXHarris17 hr
Sep 19, 11:45 AM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 11:45 AM CDTRiver Flood WarningHGXHarris17 hr
Sep 19, 12:00 PM CDTRiver Flood WarningHGXHarris, Montgomery18 hr
Sep 19, 12:03 PM CDTFlash Flood WarningHGXAustin, Brazoria, Colorado, Fort Bend, Harris, Waller and 1 more3 hr
Sep 19, 12:06 PM CDTRiver Flood WarningHGXHarris4 days
Sep 19, 12:08 PM CDTFlash Flood Warning EmergencyHGXHarris3 hr
Sep 19, 12:13 PM CDTRiver Flood WarningHGXHarris16 hr
Sep 19, 12:13 PM CDTRiver Flood WarningHGXHarris19 hr
Sep 19, 12:23 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 12:23 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 12:31 PM CDTRiver Flood WarningHGXHarris16 hr
Sep 19, 12:31 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 12:31 PM CDTRiver Flood WarningHGXHarris16 hr
Sep 19, 12:43 PM CDTSpecial Marine WarningHGX2 hr
Sep 19, 12:50 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 12:56 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 1:25 PM CDTFlash Flood WarningHGXBrazoria, Chambers, Fort Bend, Galveston, Harris, Liberty3 hr
Sep 19, 1:27 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 1:27 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 1:27 PM CDTRiver Flood WarningHGXFort Bend, Harris21 days
Sep 19, 1:27 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 1:27 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 2:00 PM CDTFlash Flood Warning EmergencyHGXChambers, Harris, Liberty, Montgomery, San Jacinto3 hr
Sep 19, 2:16 PM CDTFlash Flood WarningHGXBrazoria, Chambers, Galveston119 min
Sep 19, 2:54 PM CDTFlash Flood Warning EmergencyHGXHarris111 min
Sep 19, 2:58 PM CDTRiver Flood WarningHGXHarris18 hr
Sep 19, 2:58 PM CDTRiver Flood WarningHGXHarris21 hr
Sep 19, 3:01 PM CDTFlash Flood WarningHGXBrazoria, Fort Bend, Matagorda, Wharton119 min
Sep 19, 3:40 PM CDTRiver Flood WarningHGXHarris31 hr
Sep 19, 3:40 PM CDTRiver Flood WarningHGXHarris21 days
Sep 19, 4:18 PM CDTFlash Flood WarningHGXBrazoria, Chambers, Galveston117 min
Sep 19, 4:27 PM CDTRiver Flood WarningHGXGalveston, Harris13 hr
Sep 19, 4:29 PM CDTRiver Flood WarningHGXAustin, Colorado, Fort Bend, Wharton40 hr
Sep 19, 4:34 PM CDTAreal Flood WarningHGXBrazoria, Chambers, Fort Bend, Galveston, Harris, Liberty and 2 more18 hr

Nearby

Flash Flood Warnings in Texas, 2019Every flash flood warning in 2019

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; radar from the NEXRAD Level II archive.