Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Fort Worth, TX
NWS Fort Worth, TX issued this special weather statement at Jul 11, 2021, 1:10 AM CDT for Grayson County, Texas. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2021, 1:10 AM CDT (06:10 UTC)
- Expired
- Jul 11, 2021, 1:30 AM CDT
- In force
- 20 min
- Issued by
- NWS Fort Worth, TX
County Grayson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 151 km from the middle of the area, began a volume at 06:12 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, 6.2 hours before the alert went out and 124 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
- 1457 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1695 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -51 m²/s²
- 0-3 km storm-relative helicity
- -26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Fort Worth, TX wrote its last area forecast discussion before this special weather statement went out at Jul 10, 7:41 PM CDT, 5 hours 29 minutes earlier.
Area forecast discussion, Jul 10, 7:41 PM CDT, 5 hours 29 minutes before
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<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.
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<p id="message2">
Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Hazardous weather outlook, Jul 10, 6:18 PM CDT, 6 hours 52 minutes before
Hazardous Weather Outlook National Weather Service Fort Worth TX 618 PM CDT Sat Jul 10 2021 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-111145- Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin- Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas- Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell- Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro- Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone- Leon-Milam-Robertson- 618 PM CDT Sat Jul 10 2021 This Hazardous Weather Outlook is for North and Central Texas. .DAY ONE...Tonight. There is a chance of thunderstorms tonight, mainly along and north of Interstate 20. Some storms may be severe with damaging wind gusts being the primary threat. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Thunderstorms remain possible Sunday and Monday, mainly along and south of Interstate 20. A few storms may become severe with gusty winds and hail. Isolated to scattered storms can be expected across Central Texas Tuesday through Friday. .SPOTTER INFORMATION STATEMENT... Formal activation is not expected, but timely reports will be greatly appreciated.
In the hours before
Special weather statement, Jul 11, 1:10 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Fort Worth TX
110 AM CDT Sun Jul 11 2021
TXZ093-110630-
Grayson TX-
110 AM CDT Sun Jul 11 2021
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GRAYSON COUNTY UNTIL 130
AM CDT...
At 110 AM CDT, Doppler radar was tracking a strong thunderstorm over
Willis, or 11 miles south of Madill, moving southeast at 40 mph.
Wind gusts of 50 to 55 mph will be possible with this storm.
Locations impacted include...
Sherman, Denison, Whitesboro, Pottsboro, Knollwood, Eisenhower State
Park, southern Lake Texoma, Southmayd and Sadler.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm. Seek
a safe shelter inside a building or vehicle.
&&
A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
north central Texas.
LAT...LON 3387 9689 3385 9686 3387 9681 3386 9678
3382 9676 3383 9671 3392 9666 3389 9663
3389 9658 3385 9663 3384 9662 3382 9658
3382 9653 3377 9650 3378 9643 3373 9638
3367 9638 3359 9694 3393 9694 3395 9691
TIME...MOT...LOC 0610Z 318DEG 35KT 3393 9682
30The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 12:38 AM CDT | Severe Thunderstorm Warning | FWD | Cooke, Montague | 52 min |
| Jul 11, 1:27 AM CDT | Special Weather Statement | FWD | Cooke, Grayson, Montague | 48 min |
| Jul 11, 2:03 AM CDT | Special Weather Statement | FWD | Fannin, Lamar | 57 min |
| Jul 11, 2:13 AM CDT | Special Weather Statement | FWD | Collin, Cooke, Denton, Grayson, Montague, Wise | 47 min |
| Jul 11, 2:32 AM CDT | Special Weather Statement | FWD | Jack, Young | 28 min |
| Jul 11, 2:52 AM CDT | Special Weather Statement | FWD | Collin, Denton, Wise | 38 min |
| Jul 11, 2:56 AM CDT | Special Weather Statement | FWD | Delta, Lamar | 34 min |
| Jul 11, 3:01 AM CDT | Special Weather Statement | FWD | Jack | 29 min |
| Jul 11, 3:43 AM CDT | Special Weather Statement | FWD | Dallas, Tarrant | 47 min |
| Jul 11, 3:59 AM CDT | Special Weather Statement | FWD | Stephens, Young | 31 min |
| Jul 11, 4:24 AM CDT | Special Weather Statement | FWD | Kaufman, Rockwall | 36 min |
| Jul 11, 4:34 AM CDT | Special Weather Statement | FWD | Stephens | 56 min |
| Jul 11, 4:56 AM CDT | Special Weather Statement | FWD | Ellis, Henderson, Kaufman, Navarro, Van Zandt | 64 min |
| Jul 11, 6:01 AM CDT | Areal Flood Advisory | FWD | Ellis, Kaufman | 2 hr |
| Jul 11, 6:32 AM CDT | Special Weather Statement | FWD | Navarro | 28 min |
| Jul 11, 6:56 AM CDT | Special Weather Statement | FWD | Navarro | 34 min |
| Jul 11, 7:31 AM CDT | Special Weather Statement | FWD | Freestone, Limestone, Navarro | 29 min |
| Jul 11, 6:50 PM CDT | Areal Flood Advisory | FWD | Bell, Coryell | 3 hr |
Nearby
Special Weather Statements in Texas, 2021Every special weather statement in 2021
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.