Alert archive / Texas / Freeze Warnings in 2021

Freeze Warning 2, NWS Fort Worth, TX

November 12, 20215 counties in Texas

NWS Fort Worth, TX issued this freeze warning at Nov 12, 2021, 11:32 AM CST for 5 counties in Texas. It took effect at Nov 13, 2021, 1:00 AM CST. It was in force for 8 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
Nov 12, 2021, 11:32 AM CST (17:32 UTC)
In effect from
Nov 13, 2021, 1:00 AM CST
Expired
Nov 13, 2021, 9:00 AM CST
In force
8 hr
Issued by
NWS Fort Worth, TX

Counties Cooke County, TX, Fannin County, TX, Grayson County, TX, Lamar County, TX, Montague County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 133 km from the middle of the area, began a volume at 17:35 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 12:00Z, 5.5 hours before the alert went out and 108 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, Fort Worth, TX at 12:00Z on 2021-11-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2021-11-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2279 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

785 
WWUS74 KFWD 121732
NPWFWD

URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1132 AM CST Fri Nov 12 2021

TXZ091>095-130100-
/O.NEW.KFWD.FZ.W.0002.211113T0700Z-211113T1500Z/
Montague-Cooke-Grayson-Fannin-Lamar-
Including the cities of Bowie, Nocona, Gainesville, Sherman, 
Denison, Bonham, and Paris
1132 AM CST Fri Nov 12 2021

...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CST SATURDAY...

* WHAT...Sub-freezing temperatures as low as 31 expected.

* WHERE...Montague, Cooke, Grayson, Fannin and Lamar Counties.

* WHEN...From 1 AM to 9 AM CST Saturday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means that the season's first episode of sub-
freezing temperatures are likely to occur. These conditions will
kill sensitive plants, and residents are advised to protect
tender vegetation. Automatic sprinkler systems should also be
turned off to avoid creating ice patches on nearby roads,
driveways, and sidewalks.

&&

$$
2 follow-up statements
759 
WWUS74 KFWD 130036
NPWFWD

URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
636 PM CST Fri Nov 12 2021

TXZ091>095-130900-
/O.CON.KFWD.FZ.W.0002.211113T0700Z-211113T1500Z/
Montague-Cooke-Grayson-Fannin-Lamar-
Including the cities of Bowie, Nocona, Gainesville, Sherman, 
Denison, Bonham, and Paris
636 PM CST Fri Nov 12 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CST
SATURDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Montague, Cooke, Grayson, Fannin and Lamar Counties.

* WHEN...From 1 AM to 9 AM CST Saturday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means that the season's first episode of sub-
freezing temperatures are likely to occur. These conditions will
kill sensitive plants, and residents are advised to protect
tender vegetation. Automatic sprinkler systems should also be
turned off to avoid creating ice patches on nearby roads,
driveways, and sidewalks.

&&

$$
150 
WWUS74 KFWD 130840
NPWFWD

URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
240 AM CST Sat Nov 13 2021

TXZ091>095-131500-
/O.CON.KFWD.FZ.W.0002.000000T0000Z-211113T1500Z/
Montague-Cooke-Grayson-Fannin-Lamar-
Including the cities of Bowie, Nocona, Gainesville, Sherman, 
Denison, Bonham, and Paris
240 AM CST Sat Nov 13 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Montague, Cooke, Grayson, Fannin, and Lamar Counties.

* WHEN...From 1 AM to 9 AM CST Saturday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means that the season's first episode of sub-
freezing temperatures are likely to occur. These conditions will
kill sensitive plants, and residents are advised to protect
tender vegetation. Automatic sprinkler systems should also be
turned off to avoid creating ice patches on nearby roads,
driveways, and sidewalks.

&&

$$

Nearby

Freeze Warnings in Texas, 2021Every freeze warning 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.