Alert archive / Texas / Winter Storm Warnings in 2020

Winter Storm Warning 4, NWS Midland/Odessa, TX

December 30, 202022 counties in Texas

NWS Midland/Odessa, TX issued this winter storm warning at Dec 30, 2020, 4:36 AM CST for 22 counties in Texas. It took effect at Dec 30, 2020, 12:00 PM CST. It was in force for 36 hr. 52 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 30, 2020, 4:36 AM CST (10:36 UTC)
In effect from
Dec 30, 2020, 12:00 PM CST
Expired
Jan 1, 2021, 12:00 AM CST
In force
36 hr
Issued by
NWS Midland/Odessa, TX
All 22 counties

Andrews County, TX, Borden County, TX, Brewster County, TX, Crane County, TX, Culberson County, TX, Dawson County, TX, Ector County, TX, Glasscock County, TX, Howard County, TX, Jeff Davis County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Pecos County, TX, Presidio County, TX, Reagan County, TX, Reeves County, TX, Scurry County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Winkler County, TX

The radar

The Midland/Odessa radar (KMAF), 47 km from the middle of the area, began a volume at 10:39 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 was reported inside it

TimeReportWhereRemark
Dec 30, 12:30 PM CSTSNOW 0.87 Sw Midland, TXMEASURED AT NWS MIDLAND OFFICE NEAR MIDLAND INTERNATIONAL AIR AND SPACEPORT.
Dec 30, 1:40 PM CSTSNOW 0.4Lees, TX
Dec 30, 3:45 PM CSTSNOW 111 Sse Warfield, TX
Dec 30, 4:00 PM CSTSNOW 1.5Alpine, TX
Dec 30, 4:20 PM CSTSNOW 1Marfa, TX
Dec 30, 6:00 PM CSTSNOW 0.5Westbrook, TX
Dec 30, 6:00 PM CSTSNOW 3Alpine, TX
Dec 30, 7:50 PM CSTSNOW 1Midland International A, TXTOTAL SNOWFALL OF 12/30 THROUGH 750PM CST.
Dec 30, 8:45 PM CSTSNOW 5Alpine, TX
Dec 30, 11:00 PM CSTSNOW 5Crane, TX
Dec 31, 6:30 AM CSTSNOW 410 Wsw Valentine, TXMEASURED THIS MORNING AT CO-OP
Dec 31, 6:30 AM CSTSNOW 98 Se Kent, TXMEASURED THIS MORNING AT CO-OP
Dec 31, 7:30 AM CSTSNOW 8.3Ne Terlingua, TXSTILL SNOWING
Dec 31, 7:30 AM CSTSNOW 10Marathon, TXSTILL SNOWING
Dec 31, 8:00 AM CSTSNOW 1Big Spring, TXSTILL SNOWING
Dec 31, 8:00 AM CSTSNOW 10.2Sanderson, TXSTILL SNOWING
Dec 31, 8:00 AM CSTSNOW 11.5Alpine, TXSTILL SNOWING
Dec 31, 8:40 AM CSTSNOW 6Balmorhea, TX
Dec 31, 8:45 AM CSTSNOW 118 W Orla, TX
Dec 31, 8:57 AM CSTSNOW 2Rankin, TXSTILL SNOWING
Dec 31, 8:57 AM CSTSNOW 8.5Fort Stockton, TXSTILL SNOWING
Dec 31, 9:15 AM CSTSNOW 7Crane, TXSTILL SNOWING
Dec 31, 9:40 AM CSTSNOW 1.1Westbrook, TXSTILL SNOWING
Dec 31, 9:59 AM CSTSNOW 2Big Lake, TXSTILL SNOWING
Dec 31, 10:39 AM CSTSNOW 2.7Van Horn, TX
Dec 31, 10:45 AM CSTSNOW 915 Ne Terlingua, TX
Dec 31, 11:00 AM CSTHEAVY SNOW 24Panther Junction, TXSNOWING NOW WITH 12-24 INCHES ACROSS THE PARK SINCE LAST NIGHT
Dec 31, 11:16 AM CSTSNOW 6Fort Davis, TX
Dec 31, 12:00 PM CSTSNOW 9Terlingua, TXSNOWFALL FROM LAST NIGHT THROUGH THE MORNING.
Dec 31, 12:03 PM CSTSNOW 6Rankin, TXSNOWING NOW
Dec 31, 1:03 PM CSTSNOW 4.510 N Garden City, TXSNOWING NOW
Dec 31, 1:50 PM CSTSNOW 1220 Se Fort Stockton, TX
Dec 31, 4:30 PM CSTSNOW 43 Nw Cuthbert, TXSNOWING NOW
Dec 31, 4:30 PM CSTSNOW 5Mccamey, TXSNOWING NOW
Dec 31, 4:30 PM CSTSNOW 5Vincent, TXSNOWING NOW
Dec 31, 4:30 PM CSTSNOW 714 Sw Garden City, TXSNOWING NOW
Dec 31, 4:30 PM CSTSNOW 74 E Midkiff, TXSNOWING NOW
Dec 31, 5:00 PM CSTSNOW 4Coahoma, TXSNOWING NOW
Dec 31, 5:00 PM CSTSNOW 5Greenwood, TXSNOWING NOW
Dec 31, 5:00 PM CSTSNOW 8Big Spring, TXSNOWING NOW
Dec 31, 5:55 PM CSTSNOW 3.519 Wsw Fort Davis, TXSTORM TOTAL SINCE YESTERDAY
Dec 31, 6:09 PM CSTSNOW 6.2Westbrook, TXSNOWING NOW
Dec 31, 7:16 PM CSTSNOW 2.2Midland, TXSNOWING NOW
Dec 31, 9:00 PM CSTSNOW 3.55 N Midland, TX
Dec 31, 9:00 PM CSTSNOW 6Greenwood, TXSTILL SNOWING
Dec 31, 9:00 PM CSTSNOW 8Gail, TXSTILL SNOWING
Dec 31, 9:11 PM CSTSNOW 3.4Midland, TXSTILL SNOWING
Dec 31, 9:50 PM CSTSNOW 12Coahoma, TX
Dec 31, 10:00 PM CSTSNOW 13.5Big Spring, TXSNOW MEASURED ON THE SE SIDE OF BIG SPRING. STILL SNOWING AT THE TIME OF MEASUREMENT.
Dec 31, 10:45 PM CSTSNOW 14Big Spring, TX
Dec 31, 11:35 PM CSTSNOW 6Snyder, TXUP TO 6 INCHES OF SNOW MEASURED ON THE WEST SIDE OF SNYDER. STILL SNOWING AT TIME OF MEASUREMENT
Dec 31, 11:47 PM CSTSNOW 5.9Big Lake, TXSTORM TOTAL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 10.6 hours before the alert went out and 48 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, Midland Regional, TX at 00:00Z on 2020-12-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 116 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2020-12-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
116 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1492 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted.

529 
WWUS44 KMAF 301036
WSWMAF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Midland/Odessa TX
436 AM CST Wed Dec 30 2020

...SIGNIFICANT WINTER STORM TAKING AIM ON THE REGION...RESULTING 
IN ACCUMULATING SNOW THIS AFTERNOON THROUGH THURSDAY FOR MOST OF 
THE REGION...PARTICULARLY LOCATIONS ALONG AND SOUTH OF I-20...

TXZ046>048-050>053-060>063-067>070-075-082-274>282-302300-
/O.UPG.KMAF.WS.A.0005.201230T1800Z-210101T0600Z/
/O.NEW.KMAF.WS.W.0004.201230T1800Z-210101T0600Z/
Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell-Winkler-Ector-
Midland-Glasscock-Ward-Crane-Upton-Reagan-Pecos-Terrell-
Reeves County Plains-Chinati Mountains-Marfa Plateau-
Davis Mountains-Davis Mountains Foothills-Central Brewster County-
Chisos Basin-Presidio Valley-Lower Brewster County-
Including the cities of Lamesa, Andrews, Stanton, Big Spring, 
Colorado City, Kermit, Odessa, Midland, Monahans, Crane, McCamey,
Rankin, Big Lake, Fort Stockton, Dryden, Sanderson, Pecos, Marfa,
Fort Davis, Alpine, Panther Junction, Chisos Basin, Presidio, 
and Castolon
436 AM CST Wed Dec 30 2020

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT CST
THURSDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 7
  inches expected across portions of the Permian Basin, Trans
  Pecos, Culberson county, Big Bend Area, and Presidio Valley.
  Accumulations 7 to 12 inches expected across the southeastern 
  Permian Basin and along I-10 to the I-10/I-20 Split, and Marfa 
  Plateau. Accumulations 12 to 17 inches expected from the Davis 
  Mountains east across the Stockton Plateau. Locally higher 
  amounts will be possible.

* WHERE...Portions of southwest and western Texas.

* WHEN...From noon today to midnight CST Thursday night.

* IMPACTS...Travel will be very difficult to impossible. Some
  roads along and south of I-10 will become impassable, possibly
  including I-10 from the Split to Fort Stockton. The hazardous 
  conditions will impact the morning or evening commute.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

TXZ272-273-302300-
/O.NEW.KMAF.WS.W.0004.201230T1800Z-210101T0600Z/
Van Horn and Highway 54 Corridor-Eastern Culberson County-
Including the city of Van Horn
436 AM CST Wed Dec 30 2020

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT CST
THURSDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 7
  inches.

* WHERE...Van Horn and Highway 54 Corridor, and Eastern 
  Culberson County.

* WHEN...From noon today to midnight CST Thursday night.

* IMPACTS...Travel will be very difficult to impossible, including
  along I-10. The hazardous conditions will impact the morning or
  evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

NMZ027-034-TXZ045-059-270-271-302300-
/O.NEW.KMAF.WW.Y.0010.201230T1800Z-201231T1800Z/
Guadalupe Mountains of Eddy County-Southern Lea County-Gaines-
Loving-Guadalupe Mountains Above 7000 Feet-
Guadalupe and Delaware Mountains-
Including the cities of Queen, Eunice, Jal, Seminole, Mentone, 
and Pine Springs
436 AM CST Wed Dec 30 2020 /336 AM MST Wed Dec 30 2020/

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON CST /11 AM MST/
TODAY TO NOON CST /11 AM MST/ THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 3 inches.

* WHERE...Guadalupe and Delaware Mountains, Southern Lea, 
  Gaines, and Loving counties.

* WHEN...From noon CST /11 AM MST/ today to noon CST /11 AM MST/ 
  Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions will impact the morning or evening commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In New Mexico, the latest road conditions can be obtained by
calling 800-432-4269. In Texas, the latest road conditions can be
obtained by calling 800-452-9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland
5 follow-up statements
357 
WWUS44 KMAF 302029
WSWMAF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Midland/Odessa TX
229 PM CST Wed Dec 30 2020

...SIGNIFICANT WINTER STORM TAKING AIM ON THE REGION...RESULTING
IN ACCUMULATING SNOW THIS AFTERNOON THROUGH THURSDAY FOR MOST OF
THE REGION...PARTICULARLY LOCATIONS ALONG AND SOUTH OF I-20...

TXZ046>048-050>053-060>063-067>070-075-082-272>282-311100-
/O.CON.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell-Winkler-Ector-
Midland-Glasscock-Ward-Crane-Upton-Reagan-Pecos-Terrell-
Van Horn and Highway 54 Corridor-Eastern Culberson County-
Reeves County Plains-Chinati Mountains-Marfa Plateau-
Davis Mountains-Davis Mountains Foothills-Central Brewster County-
Chisos Basin-Presidio Valley-Lower Brewster County-
Including the cities of Lamesa, Andrews, Stanton, Big Spring, 
Colorado City, Kermit, Odessa, Midland, Monahans, Crane, McCamey,
Rankin, Big Lake, Fort Stockton, Dryden, Sanderson, Van Horn, 
Pecos, Marfa, Fort Davis, Alpine, Panther Junction, Chisos Basin,
Presidio, and Castolon
229 PM CST Wed Dec 30 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
THURSDAY NIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 7 
  inches expected across portions of the Permian Basin, Trans 
  Pecos, Culberson county, Big Bend Area, and Presidio Valley. 
  Accumulations 7 to 12 inches expected across the southeastern 
  Permian Basin and along I-10 to the I-10/I-20 Split, and Marfa 
  Plateau. Accumulations 12 to 17 inches expected from the Davis 
  Mountains east across the Stockton Plateau. Locally higher 
  amounts will be possible.

* WHERE...Portions of southwest and western Texas.

* WHEN...Until midnight CST Thursday night.

* IMPACTS...Travel will be very difficult to impossible. Some 
  roads along and south of I-10 will become impassable, possibly 
  including I-10 from the Split to Fort Stockton. The hazardous 
  conditions will impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

NMZ028-311100-
/O.EXA.KMAF.WW.Y.0010.000000T0000Z-201231T1800Z/
Eddy County Plains-
Including the cities of Artesia and Carlsbad
129 PM MST Wed Dec 30 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THURSDAY...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Eddy County Plains.

* WHEN...Until noon CST /11 AM MST/ Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 800-432-
4269.

&&

$$

NMZ027-034-TXZ045-059-270-271-311100-
/O.CON.KMAF.WW.Y.0010.000000T0000Z-201231T1800Z/
Guadalupe Mountains of Eddy County-Southern Lea County-Gaines-
Loving-Guadalupe Mountains Above 7000 Feet-
Guadalupe and Delaware Mountains-
Including the cities of Queen, Eunice, Jal, Seminole, Mentone, 
and Pine Springs
229 PM CST Wed Dec 30 2020 /129 PM MST Wed Dec 30 2020/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
/11 AM MST/ THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 3 
  inches.

* WHERE...Guadalupe and Delaware Mountains, Southern Lea, 
  Gaines, and Loving counties.

* WHEN...Until noon CST /11 AM MST/ Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In New Mexico, the latest road conditions can be obtained by
calling 800-432-4269. In Texas, the latest road conditions can be
obtained by calling 800-452-9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland
119 
WWUS44 KMAF 311003
WSWMAF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Midland/Odessa TX
403 AM CST Thu Dec 31 2020

...SIGNIFICANT WINTER STORM CONTINUES ACROSS MUCH OF WEST AND
SOUTHWEST TEXAS TODAY...

NMZ027-028-034-TXZ045-059-270-271-311115-
/O.CAN.KMAF.WW.Y.0010.000000T0000Z-201231T1800Z/
Guadalupe Mountains of Eddy County-Eddy County Plains-
Southern Lea County-Gaines-Loving-
Guadalupe Mountains Above 7000 Feet-
Guadalupe and Delaware Mountains-
403 AM CST Thu Dec 31 2020 /303 AM MST Thu Dec 31 2020/

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended across Southeast New Mexico and the Guadalupe
Mountains early this morning, with only light accumulations 
expected across portions of the far western Permian Basin through 
this afternoon. Thus, the Winter Weather Advisory has been 
cancelled.

$$

TXZ046>048-050>053-060>063-067>070-075-082-272>282-312300-
/O.CON.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell-Winkler-Ector-
Midland-Glasscock-Ward-Crane-Upton-Reagan-Pecos-Terrell-
Van Horn and Highway 54 Corridor-Eastern Culberson County-
Reeves County Plains-Chinati Mountains-Marfa Plateau-
Davis Mountains-Davis Mountains Foothills-Central Brewster County-
Chisos Basin-Presidio Valley-Lower Brewster County-
Including the cities of Lamesa, Andrews, Stanton, Big Spring, 
Colorado City, Kermit, Odessa, Midland, Monahans, Crane, McCamey,
Rankin, Big Lake, Fort Stockton, Dryden, Sanderson, Van Horn, 
Pecos, Marfa, Fort Davis, Alpine, Panther Junction, Chisos Basin,
Presidio, and Castolon
403 AM CST Thu Dec 31 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Heavy snow expected. Additional snow accumulations of 4
  to 7 inches expected across portions of the Permian Basin, Trans
  Pecos, and Big Bend Area. Additional accumulations of 7 to 12
  inches expected across the southeastern Permian Basin and
  Stockton Plateau, including along I-10 east of Fort Stockton and
  along and east of US Highway 385. Additional accumulations of 2
  to 4 inches possible through this morning across Culberson
  county, the Davis Mountains, Marfa Plateau, and Presidio Valley.
  Locally higher amounts will be possible, especially across the
  southeastern Permian Basin and Stockton Plateau.

* WHERE...Portions of southwest and western Texas.

* WHEN...Until midnight CST tonight.

* IMPACTS...Travel will be very difficult to impossible. Some
  roads along and south of I-10 are impassable, including portions
  of I-10. The hazardous conditions will impact the morning or 
  evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland
062 
WWUS44 KMAF 312018
WSWMAF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Midland/Odessa TX
218 PM CST Thu Dec 31 2020

...SIGNIFICANT WINTER STORM CONTINUES ACROSS MUCH OF WEST AND
SOUTHWEST TEXAS TODAY...

TXZ050-060-067-272>276-281-312130-
/O.CAN.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Andrews-Winkler-Ward-Van Horn and Highway 54 Corridor-
Eastern Culberson County-Reeves County Plains-Chinati Mountains-
Marfa Plateau-Presidio Valley-
218 PM CST Thu Dec 31 2020

...WINTER STORM WARNING IS CANCELLED...

Snow has ended for the most part across these locations. However,
roads may ice up overnight making for hazardous travel conditions.

$$

TXZ046>048-051>053-061>063-068>070-075-082-277>280-282-010600-
/O.CON.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Dawson-Borden-Scurry-Martin-Howard-Mitchell-Ector-Midland-
Glasscock-Crane-Upton-Reagan-Pecos-Terrell-Davis Mountains-
Davis Mountains Foothills-Central Brewster County-Chisos Basin-
Lower Brewster County-
Including the cities of Lamesa, Stanton, Big Spring, 
Colorado City, Odessa, Midland, Crane, McCamey, Rankin, Big Lake,
Fort Stockton, Dryden, Sanderson, Fort Davis, Alpine, 
Panther Junction, Chisos Basin, and Castolon
218 PM CST Thu Dec 31 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 6
  inches across the eastern and southern Permian Basin. Up to 2
  additional inches elsewhere.

* WHERE...Portions of southwest and western Texas.

* WHEN...Until midnight CST tonight.

* IMPACTS...Expect very icy and snow packed roads, sidewalks, and
  other exposed surfaces. Travel will be very difficult across the
  eastern and southern Permian Basin south to the Big Bend. Any 
  melting that occurred during the day will refreeze overnight 
  causing black ice. The hazardous conditions will impact the 
  morning commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland
162 
WWUS44 KMAF 010051 AAA
WSWMAF

URGENT - WINTER WEATHER MESSAGE...UPDATED
National Weather Service Midland/Odessa TX
651 PM CST Thu Dec 31 2020

TXZ277>280-282-010200-
/O.CAN.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Davis Mountains-Davis Mountains Foothills-Central Brewster County-
Chisos Basin-Lower Brewster County-
651 PM CST Thu Dec 31 2020

...WINTER STORM WARNING IS CANCELLED...

Winter weather has moved out of the area and no additional snow is
expected. However snow packed roads and some black ice can be
expected tonight. Use caution while driving.

$$

TXZ046>048-051>053-061>063-068>070-075-082-010600-
/O.CON.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Dawson-Borden-Scurry-Martin-Howard-Mitchell-Ector-Midland-
Glasscock-Crane-Upton-Reagan-Pecos-Terrell-
Including the cities of Lamesa, Stanton, Big Spring, 
Colorado City, Odessa, Midland, Crane, McCamey, Rankin, Big Lake,
Fort Stockton, Dryden, and Sanderson
651 PM CST Thu Dec 31 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 6 
  inches across the eastern and southern Permian Basin. Up to 2 
  additional inches elsewhere.

* WHERE...Portions of the Permian Basin, Pecos County and Lower
  the Trans Pecos.

* WHEN...Until midnight CST tonight.

* IMPACTS...Expect very icy and snow packed roads, sidewalks, and
  other exposed surfaces. Travel will be very difficult, even
  impassable in some areas across the eastern and southern Permian
  Basin, including parts of I-20 east of Midland and I-10 east of
  Fort Stockton. Any melting that occurred during the day will 
  refreeze overnight causing black ice. The hazardous conditions 
  will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland
459 
WWUS44 KMAF 010224 AAA
WSWMAF

URGENT - WINTER WEATHER MESSAGE...UPDATED
National Weather Service Midland/Odessa TX
824 PM CST Thu Dec 31 2020

TXZ046>048-051>053-061>063-068>070-075-082-010600-
/O.CON.KMAF.WS.W.0004.000000T0000Z-210101T0600Z/
Dawson-Borden-Scurry-Martin-Howard-Mitchell-Ector-Midland-
Glasscock-Crane-Upton-Reagan-Pecos-Terrell-
Including the cities of Lamesa, Stanton, Big Spring, 
Colorado City, Odessa, Midland, Crane, McCamey, Rankin, Big Lake,
Fort Stockton, Dryden, and Sanderson
824 PM CST Thu Dec 31 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 6 
  inches across the eastern and southern Permian Basin. Up to 2 
  additional inches elsewhere.

* WHERE...Portions of the Permian Basin, Pecos County and Lower 
  the Trans Pecos.

* WHEN...Until midnight CST tonight.

* IMPACTS...Expect very icy and snow packed roads, sidewalks, 
  and other exposed surfaces. Travel will be very difficult, 
  even impassable in some areas across the eastern and southern 
  Permian Basin, including parts of I-20 east of Midland and I-
  10 east of Fort Stockton. Any melting that occurred during the 
  day will refreeze overnight causing black ice. The hazardous 
  conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel is not recommended, if you must travel be prepared to be
stranded for hours, keep an extra flashlight, food, and water in 
your vehicle.

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

TXZ045-050-010600-
/O.NEW.KMAF.WW.Y.0001.210101T0224Z-210101T0600Z/
Gaines-Andrews-
Including the cities of Seminole and Andrews
824 PM CST Thu Dec 31 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

* WHAT...Snow accumulations of up to 2 inches.

* WHERE...Gaines and Andrews Counties.

* WHEN...Until midnight CST tonight.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Snow accumulations are mostly likely in 
  the eastern half of the counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions can be obtained by calling 800-452-
9292.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/midland

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Midland/Odessa, TX wrote its last area forecast discussion before this winter storm warning went out at Dec 30, 4:35 AM CST, 1 minute earlier.

Area forecast discussion, Dec 30, 4:35 AM CST, 1 minute before
Area Forecast Discussion
National Weather Service Midland/Odessa TX
435 AM CST Wed Dec 30 2020

.DISCUSSION...

...SIGNIFICANT WINTER STORM TO IMPACT THE REGION TODAY AND
THURSDAY...

A big change is on the way today, as a strong cold front has
already progressed nearly to the Pecos River, accompanied by
gusty northerly to northeasterly winds in its wake. Isentropic
upglide has begun, with bands of showers across northern portions
of the area early this morning, though intensity has diminished
with only a lightning strike or two over the last several hours.
High temperatures today will likely be realized in the morning for
most locations along and north of I-10 due to the timing of
today's front, as well as strong cold advection that will continue
across the area through Thursday. Wind chill values by this
afternoon will be in the 20s for most of the area, teens across
the higher terrain, and 30s along the Rio Grande, with the post-
frontal winds expected to produce strong gap winds at Guadalupe
Pass, where a High Wind Warning is in effect through early this
evening. Focus remains on the strong upper level trough, currently
extending southwestward from the West Central Plains across New
Mexico into northwestern Mexico. This trough will continue to trek
eastward today, developing into a cutoff low over Sonora MX by
this evening.

Models have started to come into better agreement with the timing
of this system, however, its eventual track remains in question,
along with the associated locations of deformation zone snow bands
that will develop. Given the depth of the cold air in the post-
frontal environment today, rain this morning will transition to
snow fairly quickly, though there may be a brief window for sleet
this afternoon across the Permian Basin and Lower Trans Pecos, and
a more prolonged opportunity for a wintry mix of rain/sleet/snow
across the Lower Trans Pecos and Rio Grande Valley tonight. For
much of the area, the dominant precipitation type for this entire
event will be snow, with the transition to snow expected to occur
this morning across SE NM/the Guadalupe Mtns southward to the
Davis Mtns and Marfa Plateau, gradually expanding east and south
through the afternoon. As the left front quadrant of a 110-120kt
3h jet rounds the base of the trough today, lift will increase
with significant Q- vector convergence noted over the Davis
Mountains, Marfa Plateau, and toward the I-10/I-20 Split where
heavy snow is expected to begin by this afternoon. The heavier
snow will begin to overspread the area to the east and northeast
over the next 24-36 hours as the low pivots and begins tracking
east-northeast into Texas. Models have been consistent in
indicating a couple of favored areas for deformation zone banding,
the first from the Davis Mountains east across the Stockton
Plateau tonight through Thursday, as well as an area expanding
northward across the from the Lower Trans Pecos across the SE/E
Permian Basin mainly during the day Thursday.

Model guidance continues to differ on just how much snow will
accumulate across the region, with a bit more uncertainty across
the eastern Permian Basin, far Lower Trans Pecos, and through
the Rio Grande Valley where more sleet is expected to mix in due
to warm air wrapping around the low, resulting in a small warm
nose aloft. Despite this, believe it is not out of the question
for a large swath of West and Southwest Texas to receive upwards
of 6-8 inches of snow, with 12 to 15 inches of snow expected in
the Davis Mountains eastward across the Stockton Plateau. Locally
higher amounts are not only possible, but are expected, given the
intensity of the upper low as well as anticipated prolonged
deformation zone snowfall and the potential for convective banding
to occur that could produce snowfall rates in excess of 2-3" per
hour. Even high-resolution models have trouble capturing the
nuances of these smaller scale features, thus, the forecast will
likely continue to be adjusted over the next 24 hours as the
system evolves. Given the increasing snow amounts and forecaster
confidence, have gone ahead and upgraded the Winter Storm Watch to
a Winter Storm Warning, and expanded to include much of Culberson
county. There will be a fairly tight gradient in snowfall amounts
to the north and west of the warning, and thus have elected to
cover Gaines county, Southern Lea county, and Loving county with a
Winter Weather Advisory, where 1 to 3 inches of snow are
expected, as well as the Guadalupe Mountains, where elevation
alone will likely result in a few inches of accumulation. In these
areas, however, the wintry precipitation there will wind down
fairly quickly compared to the rest of the forecast area as the
low pivots northeastward.

As the low progresses northeast across Texas toward the Red River
Valley by Thursday evening, expect precipitation to end from
southwest to northeast, with lingering snow showers possible for
the NE Permian Basin/Western Low Rolling Plains through early
Friday morning. In the wake of the storm, very cold temperatures
are possible early Friday, especially in areas with snow cover.
Taking this into account, have trended toward (or even colder
than) the coolest guidance for temperatures through Friday
afternoon, particularly across the eastern Permian Basin, Lower
Trans Pecos, Stockton Plateau, and Davis Mountains/Marfa Plateau.
Thereafter, temperatures will slowly moderate through the weekend,
with highs in the 60s expected for most by Monday. A weaker
trough is progged to pass through the region Friday night/Saturday
with little fanfare, with the pattern then transitioning to
quasizonal by early next week, maintaining above normal
temperatures and dry conditions.

&&

.PRELIMINARY POINT TEMPS/POPS...
Big Spring                     43  29  35  21 /  50  80  80  40
Carlsbad                       44  24  51  21 /  50  30  10   0
Dryden                         50  31  39  24 /  60 100 100  10
Fort Stockton                  43  26  37  21 /  80  90  90  10
Guadalupe Pass                 31  24  42  26 /  60  30  10   0
Hobbs                          36  24  46  21 /  40  30  20  10
Marfa                          41  20  36  12 /  70  90  50   0
Midland Intl Airport           38  29  36  21 /  50  70  70  30
Odessa                         40  27  37  21 /  50  70  70  30
Wink                           42  27  46  18 /  70  60  30  10

&&

.MAF WATCHES/WARNINGS/ADVISORIES...
NM...Winter Weather Advisory from 11 AM this morning to 11 AM MST
     Thursday for Guadalupe Mountains of Eddy County-Southern
     Lea County.

TX...Winter Storm Warning from noon today to midnight CST Thursday
     night for Andrews-Borden-Central Brewster County-Chinati
     Mountains-Chisos Basin-Crane-Davis Mountains-Davis
     Mountains Foothills-Dawson-Eastern Culberson County-Ector-
     Glasscock-Howard-Lower Brewster County-Marfa Plateau-Martin-
     Midland-Mitchell-Pecos-Presidio Valley-Reagan-Reeves County
     Plains-Scurry-Terrell-Upton-Van Horn and Highway 54
     Corridor-Ward-Winkler.

     Winter Weather Advisory from noon CST /11 AM MST/ today to noon
     CST /11 AM MST/ Thursday for Gaines-Guadalupe Mountains
     Above 7000 Feet-Guadalupe and Delaware Mountains-Loving.

     High Wind Warning until 8 PM MST this evening for Guadalupe and
     Delaware Mountains.

&&

44/84
Hazardous weather outlook, Dec 30, 3:32 AM CST, 1 hour 4 minutes before
Hazardous Weather Outlook
National Weather Service Midland/Odessa TX
332 AM CST Wed Dec 30 2020

NMZ027>029-033-034-TXZ045>048-050>053-059>063-067>070-075-082-
270>282-310945-
Guadalupe Mountains of Eddy County-Eddy County Plains-
Northern Lea County-Central Lea County-Southern Lea County-Gaines-
Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell-Loving-Winkler-
Ector-Midland-Glasscock-Ward-Crane-Upton-Reagan-Pecos-Terrell-
Guadalupe Mountains Above 7000 Feet-Guadalupe and Delaware Mountains-
Van Horn and Highway 54 Corridor-Eastern Culberson County-
Reeves County Plains-Chinati Mountains-Marfa Plateau-Davis Mountains-
Davis Mountains Foothills-Central Brewster County-Chisos Basin-
Presidio Valley-Lower Brewster County-
332 AM CST Wed Dec 30 2020 /232 AM MST Wed Dec 30 2020/

This Hazardous Weather Outlook is for portions of southeast New
Mexico, southwest Texas, and western Texas.

.DAY ONE...Today and Tonight

A High Wind Warning is in effect for Guadalupe Pass through mid
evening.

A Winter Weather Advisory is in effect for the Guadalupe and Delaware
Mountains, and Gaines, Loving, and southern Lea Counties this
afternoon and tonight.

A Winter Storm Warning is in effect for most of West Texas this
afternoon and tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A Winter Weather Advisory is in effect for the Guadalupe and Delaware
Mountains, and Gaines, Loving, and southern Lea Counties through
Thursday morning.

A Winter Storm Warning is in effect for most of West Texas through
Thursday evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

Please relay any information about observed severe weather to the
NWS while following all local, state and CDC guidelines.

This product, along with other watches, warnings, advisories,
and statements issued by the National Weather Service Office in
Midland, can be found on the internet at...
https://weather.gov/midland

44

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 29, 7:30 PM CSTSpecial Weather StatementMAFDawson45 min
Dec 30, 4:36 AM CSTWinter Weather AdvisoryMAFCulberson, Gaines, Loving23 hr

Nearby

Winter Storm Warnings in Texas, 2020Every winter storm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.