Alert archive / Texas / River Flood Warnings in 2018

River Flood Warning 9, NWS Houston/Galveston, TX

February 25, 2018Grimes County, Montgomery County, Waller County, Texas

NWS Houston/Galveston, TX issued this river flood warning at Feb 25, 2018, 4:56 PM CST for Grimes County, Montgomery County, Waller County, Texas. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Feb 25, 2018, 4:56 PM CST (22:56 UTC)
Expired
Feb 26, 2018, 8:48 AM CST
In force
16 hr
Issued by
NWS Houston/Galveston, TX
Flood severity
Minor

Counties Grimes County, TX, Montgomery County, TX, Waller County, TX

The radar

The Houston radar (KHGX), 116 km from the middle of the area, began a volume at 22:56 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 river 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 river flood warning went out at Feb 25, 3:59 PM CST, 57 minutes earlier.

Area forecast discussion, Feb 25, 3:59 PM CST, 57 minutes before
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Hazardous weather outlook, Feb 25, 4:01 PM CST, 55 minutes before
Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
401 PM CST Sun Feb 25 2018

TXZ163-164-176>179-195>200-210>214-226-227-235>238-262215-
Austin-Brazoria-Brazos-Burleson-Chambers-Colorado-Fort Bend-
Galveston-Grimes-Harris-Houston-Jackson-Liberty-Madison-Matagorda-
Montgomery-Polk-San Jacinto-Trinity-Walker-Waller-Washington-
Wharton-
401 PM CST Sun Feb 25 2018

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

.DAY ONE...Tonight

Periods of rain with embedded thunderstorms can be expected this
evening. Localized heavy rainfall will be possible where any
training stronger cells develop. The primary threat is minor
street flooding and along low water crossings. Otherwise, patchy
sea fog will reduce visibilities at times.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ330-335-350-355-370-375-262215-
Coastal waters from Freeport to the Matagorda Ship Channel out
20 NM-Coastal waters from High Island to Freeport out 20 NM-
Galveston Bay-Matagorda Bay-
Waters from Freeport to the Matagorda Ship Channel from 20 to
60 NM-Waters from High Island to Freeport from 20 to 60 NM-
401 PM CST Sun Feb 25 2018

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

.DAY ONE...Tonight

Patchy of sea fog near the coast and bays will continue. Visibility
will be reduced below 1 mile at times. A front, along with scattered
showers and thunderstorms will push off the coast later tonight
bringing a temporary end to the fog threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

A Small Craft Advisory may be required offshore on Monday for
elevated northeast winds and seas. Chances of sea fog will
increase Tuesday through Wednesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Special weather statement, Feb 25, 12:39 PM CST, 4 hours 17 minutes before
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Special weather statement, Feb 25, 1:15 PM CST, 3 hours 41 minutes before
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Special weather statement, Feb 25, 1:55 PM CST, 3 hours 1 minute before
Special Weather Statement
National Weather Service Houston/Galveston TX
155 PM CST SUN FEB 25 2018

TXZ177-195>199-252045-
Walker TX-Washington TX-Brazos TX-Grimes TX-Burleson TX-
Montgomery TX-
155 PM CST SUN FEB 25 2018

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN BURLESON...CENTRAL
GRIMES...NORTHEASTERN WASHINGTON...SOUTHEASTERN BRAZOS...NORTHWESTERN
MONTGOMERY AND SOUTHWESTERN WALKER COUNTIES UNTIL 245 PM CST...

At 154 PM CST, Doppler radar was tracking a strong thunderstorm near
Millican, or 11 miles west of Navasota, moving northeast at 55 mph.

Dime size hail will be possible with this storm.

Locations impacted include...
Southern College Station, Navasota, Bedias, Millican, Anderson,
Wellborn, Roans Prairie, Independence, Richards and Carlos.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3026 9635 3051 9645 3089 9576 3060 9557
TIME...MOT...LOC 1954Z 234DEG 49KT 3040 9629

Hathaway

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 25, 11:51 AM CSTRiver Flood WarningHGXHardin, Liberty, Polk4 days
Feb 25, 12:39 PM CSTSpecial Weather StatementHGXBrazos36 min
Feb 25, 1:15 PM CSTSpecial Weather StatementHGXWashington45 min
Feb 25, 1:39 PM CSTRiver Flood WarningHGXMontgomery55 hr
Feb 25, 1:55 PM CSTSpecial Weather StatementHGXGrimes50 min
Feb 25, 3:28 PM CSTAreal Flood AdvisoryHGXAustin, Brazos, Grimes, Montgomery, Walker, Waller and 1 more3 hr
Feb 25, 4:35 PM CSTRiver Flood WarningHGXHarris, Liberty, Montgomery4 days
Feb 25, 4:53 PM CSTRiver Flood WarningHGXMontgomery, Waller24 hr
Feb 25, 4:53 PM CSTRiver Flood WarningHGXHarris24 hr
Feb 25, 4:56 PM CSTRiver Flood WarningHGXWaller24 hr
Feb 25, 4:56 PM CSTRiver Flood WarningHGXWaller27 hr
Feb 25, 4:56 PM CSTRiver Flood WarningHGXHarris24 hr
Feb 25, 4:56 PM CSTRiver Flood WarningHGXHarris24 hr
Feb 25, 5:01 PM CSTAreal Flood AdvisoryHGXHarris, Liberty, Montgomery, Polk, San Jacinto, Walker3 hr
Feb 25, 5:10 PM CSTAreal Flood WarningHGXWaller12 hr

Nearby

River Flood Warnings in Texas, 2018Every river flood warning in 2018

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.