Alert archive / Texas / Flash Flood Warnings in 2019
Flash Flood Warning 45, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Sep 19, 2019, 2:20 AM CDT for Harris County, Liberty County, Montgomery County, Texas. It was in force for 115 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
- Sep 19, 2019, 2:20 AM CDT (07:20 UTC)
- Expired
- Sep 19, 2019, 4:15 AM CDT
- In force
- 115 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Harris County, TX, Liberty County, TX, Montgomery County, TX
The radar
The Houston radar (KHGX), 72 km from the middle of the area, began a volume at 07:21 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, 7.3 hours before the alert went out and 196 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
- 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
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, 2 hours 32 minutes earlier.
Area forecast discussion, Sep 18, 11:48 PM CDT, 2 hours 32 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Sep 18, 5:43 AM CDT, 20 hours 37 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.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 7:15 PM CDT | Flash Flood Warning | HGX | Chambers, Galveston, Harris | 60 min |
| Sep 18, 7:28 PM CDT | Areal Flood Advisory | HGX | Chambers, Harris, Liberty | 2 hr |
| Sep 18, 7:32 PM CDT | Areal Flood Warning | HGX | Galveston | 3 hr |
| Sep 18, 7:44 PM CDT | Flash Flood Warning | HGX | Chambers, Liberty | 2 hr |
| Sep 18, 8:14 PM CDT | Areal Flood Warning | HGX | Chambers, Fort Bend, Harris | 61 min |
| Sep 18, 9:46 PM CDT | Flash Flood Warning | HGX | Chambers, Liberty | 59 min |
| Sep 18, 10:41 PM CDT | Flash Flood Warning | HGX | Chambers, Liberty | 64 min |
| Sep 18, 11:38 PM CDT | Flash Flood Warning | HGX | Chambers, Liberty | 8 hr |
| Sep 19, 12:16 AM CDT | Areal Flood Advisory | HGX | Harris, Liberty, Montgomery | 59 min |
| Sep 19, 1:24 AM CDT | Small Craft Advisory | HGX | 9 hr | |
| Sep 19, 1:28 AM CDT | Areal Flood Advisory | HGX | Chambers, Harris, Liberty, Montgomery | 2 hr |
| Sep 19, 2:56 AM CDT | River Flood Warning | HGX | Harris, Montgomery | 63 hr |
| Sep 19, 4:15 AM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty, Montgomery, San Jacinto | 3 hr |
| Sep 19, 4:59 AM CDT | Flash Flood Warning | HGX | Liberty | 2 hr |
| Sep 19, 5:32 AM CDT | Flash Flood Warning | HGX | Montgomery | 118 min |
| Sep 19, 5:44 AM CDT | River Flood Warning | HGX | Liberty | 4 days |
| Sep 19, 6:04 AM CDT | Special Weather Statement | HGX | Montgomery | 41 min |
| Sep 19, 6:41 AM CDT | Tornado Warning | HGX | Chambers | 21 min |
| Sep 19, 7:00 AM CDT | Flash Flood Warning | HGX | Chambers, Liberty, Montgomery, San Jacinto | 7 hr |
| Sep 19, 7:18 AM CDT | Flash Flood Warning | HGX | Harris, Liberty, Montgomery | 4 hr |
| Sep 19, 7:37 AM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 38 min |
| Sep 19, 8:10 AM CDT | River Flood Warning | HGX | Harris, Montgomery | 21 hr |
| Sep 19, 8:12 AM CDT | River Flood Warning | HGX | Harris, Liberty, Montgomery, San Jacinto | 33 hr |
| Sep 19, 8:26 AM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty | 3 hr |
| Sep 19, 8:27 AM CDT | River Flood Warning | HGX | Chambers, Harris, Liberty | 3 days |
| Sep 19, 8:33 AM CDT | Special Marine Warning | HGX | 87 min | |
| Sep 19, 8:50 AM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty, Montgomery | 5 hr |
| Sep 19, 9:12 AM CDT | Flash Flood Warning | HGX | Harris, Montgomery | 3 hr |
| Sep 19, 9:25 AM CDT | Special Weather Statement | HGX | Chambers, Harris | 65 min |
| Sep 19, 10:02 AM CDT | Flash Flood Warning | HGX | Harris | 118 min |
| Sep 19, 10:12 AM CDT | River Flood Warning | HGX | Harris, Montgomery | 44 hr |
| Sep 19, 10:20 AM CDT | Areal Flood Advisory | HGX | Galveston | 115 min |
| Sep 19, 10:20 AM CDT | Small Craft Advisory | HGX | 9 hr | |
| Sep 19, 10:28 AM CDT | River Flood Warning | HGX | Harris | 18 hr |
| Sep 19, 10:30 AM CDT | Flash Flood Warning | HGX | Harris | 3 hr |
| Sep 19, 10:41 AM CDT | River Flood Warning | HGX | Harris | 18 hr |
| Sep 19, 10:41 AM CDT | River Flood Warning | HGX | Harris | 36 hr |
| Sep 19, 10:41 AM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 10:46 AM CDT | Special Marine Warning | HGX | 119 min | |
| Sep 19, 10:47 AM CDT | Flash Flood Warning | HGX | Chambers, Galveston | 31 min |
| Sep 19, 11:01 AM CDT | River Flood Warning | HGX | Harris | 18 hr |
| Sep 19, 11:16 AM CDT | Flash Flood Warning | HGX | Brazoria, Chambers, Galveston | 3 hr |
| Sep 19, 11:17 AM CDT | River Flood Warning | HGX | Harris | 27 hr |
| Sep 19, 11:17 AM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 11:38 AM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty | 112 min |
| Sep 19, 11:45 AM CDT | River Flood Warning | HGX | Harris | 17 hr |
| Sep 19, 11:45 AM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 11:45 AM CDT | River Flood Warning | HGX | Harris | 17 hr |
| Sep 19, 12:00 PM CDT | River Flood Warning | HGX | Harris, Montgomery | 18 hr |
| Sep 19, 12:03 PM CDT | Flash Flood Warning | HGX | Austin, Brazoria, Colorado, Fort Bend, Harris, Waller and 1 more | 3 hr |
| Sep 19, 12:06 PM CDT | River Flood Warning | HGX | Harris | 4 days |
| Sep 19, 12:08 PM CDT | Flash Flood Warning | HGX | Harris | 3 hr |
| Sep 19, 12:13 PM CDT | River Flood Warning | HGX | Harris | 16 hr |
| Sep 19, 12:13 PM CDT | River Flood Warning | HGX | Harris | 19 hr |
| Sep 19, 12:23 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 12:23 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 12:31 PM CDT | River Flood Warning | HGX | Harris | 16 hr |
| Sep 19, 12:31 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 12:31 PM CDT | River Flood Warning | HGX | Harris | 16 hr |
| Sep 19, 12:43 PM CDT | Special Marine Warning | HGX | 2 hr | |
| Sep 19, 12:50 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 12:56 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 1:25 PM CDT | Flash Flood Warning | HGX | Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty | 3 hr |
| Sep 19, 1:27 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 1:27 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 1:27 PM CDT | River Flood Warning | HGX | Fort Bend, Harris | 21 days |
| Sep 19, 1:27 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 1:27 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 2:00 PM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty, Montgomery, San Jacinto | 3 hr |
| Sep 19, 2:16 PM CDT | Flash Flood Warning | HGX | Brazoria, Chambers, Galveston | 119 min |
| Sep 19, 2:54 PM CDT | Flash Flood Warning | HGX | Harris | 111 min |
| Sep 19, 2:58 PM CDT | River Flood Warning | HGX | Harris | 18 hr |
| Sep 19, 2:58 PM CDT | River Flood Warning | HGX | Harris | 21 hr |
| Sep 19, 3:01 PM CDT | Flash Flood Warning | HGX | Brazoria, Fort Bend, Matagorda, Wharton | 119 min |
| Sep 19, 3:40 PM CDT | River Flood Warning | HGX | Harris | 31 hr |
| Sep 19, 3:40 PM CDT | River Flood Warning | HGX | Harris | 21 days |
| Sep 19, 4:18 PM CDT | Flash Flood Warning | HGX | Brazoria, Chambers, Galveston | 117 min |
| Sep 19, 4:27 PM CDT | River Flood Warning | HGX | Galveston, Harris | 13 hr |
| Sep 19, 4:29 PM CDT | River Flood Warning | HGX | Austin, Colorado, Fort Bend, Wharton | 40 hr |
| Sep 19, 4:34 PM CDT | Areal Flood Warning | HGX | Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty and 2 more | 18 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.