Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 34, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 6, 2018, 11:46 PM CDT for Brazos County, Burleson County, Grimes County, Texas. It was in force for 29 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
- Apr 6, 2018, 11:46 PM CDT (04:46 UTC)
- Expired
- Apr 7, 2018, 12:15 AM CDT
- In force
- 29 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brazos County, TX, Burleson County, TX, Grimes County, TX
The radar
The Ft Hood radar (KGRK), 105 km from the middle of the area, began a volume at 04:47 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
Fort Worth, TX (KFWD), launched 00:00Z, 4.8 hours before the alert went out and 269 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
- 690 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1896 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 6, 9:39 PM CDT, 2 hours 7 minutes earlier.
Area forecast discussion, Apr 6, 9:39 PM CDT, 2 hours 7 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, Apr 6, 6:35 AM CDT, 17 hours 11 minutes before
Hazardous Weather Outlook National Weather Service Houston/Galveston TX 635 AM CDT Fri Apr 6 2018 TXZ163-164-176>179-196-198>200-071145- Brazos-Grimes-Houston-Liberty-Madison-Montgomery-Polk-San Jacinto- Trinity-Walker- 635 AM CDT Fri Apr 6 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Isolated strong to severe thunderstorms possible late this afternoon if the cap over the area weakens. The main threat would be large hail if the cap breaks. A cold front moves through the area tonight and widespread rainfall expected over the area. Accumulations of 1 inch should be fairly common with isolated amounts of 2 to 3 inches possible. Strong to severe thunderstorms will be possible tonight as well with small hail the main threat. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Much cooler temperatures in the wake of the front Saturday. Another cold front early Tuesday could bring rain to the area. A strong front should approach the region next Friday or Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation might be needed late this afternoon and overnight. TXZ195-197-210>214-226-227-235>238-071145- Austin-Brazoria-Burleson-Chambers-Colorado-Fort Bend-Galveston- Harris-Jackson-Matagorda-Waller-Washington-Wharton- 635 AM CDT Fri Apr 6 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight A band of showers and thunderstorms should move toward the area and weaken late tonight and early Saturday. Rainfall of one tenth to one half inch possible with a few spots receiving amounts near 1 inch with a strong cold front moving through the area. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Cool and breezy conditions possible Saturday in the wake of the front. A winds advisory may be need for parts of the area Saturday with winds of 15 to 25 mph. .SPOTTER INFORMATION STATEMENT... Spotter activation is unlikely tonight. GMZ330-335-350-355-370-375-071145- 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- 635 AM CDT Fri Apr 6 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Breezy conditions are forecast in the wake of a cold front pushing off the coast on Saturday morning. Advisory flags may be required on Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Special weather statement, Apr 6, 11:28 PM CDT, 18 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
1128 PM CDT FRI APR 6 2018
TXZ176-177-195>199-070530-
Walker TX-Madison TX-Washington TX-Brazos TX-Grimes TX-Burleson TX-
Montgomery TX-
1128 PM CDT FRI APR 6 2018
...SIGNIFICANT WEATHER ADVISORY FOR BURLESON...NORTHERN GRIMES...
NORTHERN WASHINGTON...BRAZOS...NORTHWESTERN MONTGOMERY...SOUTHERN
MADISON AND WEST CENTRAL WALKER COUNTIES UNTIL 1230 AM CDT...
At 1128 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 9 miles east of Rosebud to Granger. Movement
was east at 55 mph.
Dime size hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
College Station, Bryan, Brenham, Madisonville, Caldwell, Somerville,
Snook, Bedias, Kurten, Wixon Valley, Millican, Lake Somerville Dam,
Kyle Field, Iola, Lyons, Deanville, Independence, Quarry, Chriesman
and North Zulch.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3073 9662 3070 9656 3074 9646 3091 9635
3102 9612 3085 9554 3014 9646 3027 9667
3030 9664 3032 9669 3032 9674 3039 9679
3047 9691 3049 9690 3054 9692 3056 9696
TIME...MOT...LOC 0428Z 281DEG 46KT 3110 9682 3074 9744
11The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 11:28 PM CDT | Special Weather Statement | HGX | Brazos, Burleson, Grimes, Washington | 62 min |
| Apr 7, 12:11 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Madison, Montgomery, Walker | 34 min |
| Apr 7, 12:21 AM CDT | Special Weather Statement | HGX | Trinity | 54 min |
| Apr 7, 12:23 AM CDT | Tornado Warning | HGX | Grimes, Montgomery, Walker | 22 min |
| Apr 7, 12:39 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Montgomery, San Jacinto, Walker, Waller and 1 more | 51 min |
| Apr 7, 12:51 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity, Walker | 39 min |
| Apr 7, 1:24 AM CDT | Special Weather Statement | HGX | Polk | 51 min |
| Apr 7, 1:28 AM CDT | Special Weather Statement | HGX | Montgomery | 47 min |
| Apr 7, 2:11 AM CDT | Special Weather Statement | HGX | Harris | 49 min |
| Apr 7, 3:46 AM CDT | Small Craft Advisory | HGX | 24 hr | |
| Apr 7, 3:49 AM CDT | Wind Advisory | HGX | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 3 more | 15 hr |
| Apr 7, 4:17 PM CDT | Rip Current Statement | HGX | Brazoria, Chambers, Galveston, Matagorda | 12 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.