Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Midland/Odessa, TX

July 15, 2017Midland County, Texas

NWS Midland/Odessa, TX issued this special weather statement at Jul 15, 2017, 5:46 PM CDT for Midland 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 outline as issued.

The facts

Issued
Jul 15, 2017, 5:46 PM CDT (22:46 UTC)
Expired
Jul 15, 2017, 6:15 PM CDT
In force
29 min
Issued by
NWS Midland/Odessa, TX

County Midland County, TX

The radar

The Midland/Odessa radar (KMAF), 23 km from the middle of the area, began a volume at 22:50 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.8 hours before the alert went out and 364 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, Amarillo Airport, TX at 12:00Z on 2017-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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, Amarillo Airport, TX at 12:00Z on 2017-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 square meters per square second.1939Sfc1 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
9 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
2026 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
-13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Midland/Odessa, TX wrote its last area forecast discussion before this special weather statement went out at Jul 15, 2:45 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, Jul 15, 2:45 PM CDT, 3 hours 1 minute before
Area Forecast Discussion
National Weather Service Midland/Odessa TX
245 PM CDT Sat Jul 15 2017

.DISCUSSION...

WV imagery shows the inverted upper trough remains over Chihuahua,
nosing NE into West Texas and Southeast New Mexico. Convection
developed under this feature last night and moved across the river
into West Texas, dropping as much as 1.5" of rainfall in some
locations over the last 24 hours.  This has resulted in elevated
flows on the Rio grande, w/even minor flooding near Presidio.
Temperatures remain below normal, especially invof convection out
west.

The inverted trough is forecast to move slowly west over the next
few days, and trying to nose up into the SW CONUS, shifting the
upper ridge to north of the Arklatex by 12Z Tue.  This will open the
door for easterlies to pull in abundant Gulf moisture, w/ensemble
showing anomalously high PWATs in central Texas over the next few
days.  Hi PWATs are also forecast further west near the inverted
trough.  In short, chances for convection will be on the increase in
both the west and east.  Hi-res models and radar confirm this, at
least for the short term.  Lowest chances will be in the Permian
Basin.

Longer term, models keep bringing shortwaves around the bottom of
the ridge and up the Rio Grande, w/easterly upslope flow favoring
rain over the higher terrain our west, and the Lwr Trans Pecos
south.  Increased moisture and the ridge centered well north will
allow temperatures each day to stay right around normal.

&&

.PRELIMINARY POINT TEMPS/POPS...
Big Spring                     73  95  73  96 /  10  10  20  10
Carlsbad                       70  92  71  95 /  20  20  10  10
Dryden                         74  96  74  95 /  10  30  20  20
Fort Stockton                  72  91  71  93 /  10  30  20  20
Guadalupe Pass                 66  81  67  84 /  40  30  20  20
Hobbs                          68  91  68  92 /  10  10  10  10
Marfa                          63  83  63  85 /  40  50  30  40
Midland Intl Airport           73  95  73  95 /  10  10  20  10
Odessa                         73  94  73  95 /  10  10  20  10
Wink                           71  95  72  96 /  10  20  10  10

&&

.MAF WATCHES/WARNINGS/ADVISORIES...
NM...None.
TX...None.
&&

84/44
Hazardous weather outlook, Jul 15, 1:56 PM CDT, 3 hours 50 minutes before
Hazardous Weather Outlook
National Weather Service Midland/Odessa TX
156 PM CDT Sat Jul 15 2017

NMZ027>029-033-034-TXZ045>048-050>053-057>063-067>070-074-075-
079>082-258-161900-
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-
Van Horn and Highway 54 Corridor-Reeves County and Upper Trans Pecos-
Loving-Winkler-Ector-Midland-Glasscock-Ward-Crane-Upton-Reagan-
Davis/Apache Mountains Area-Pecos-Presidio Valley-Marfa Plateau-
Big Bend Area-Terrell-Guadalupe Mountains-
156 PM CDT Sat Jul 15 2017 /1256 PM MDT Sat Jul 15 2017/

This hazardous weather outlook is for portions of southeast New
Mexico, southwest Texas and western Texas.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Showers and thunderstorms are possible through tonight, especially
across the higher terrain and adjacent plains. The main threat is
moderate to heavy rainfall potentially resulting in areas of
localized flash flooding, though occasional lightning and gusty
winds will also be possible.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

Thunderstorms will be possible Sunday through the beginning of the
work week across various portions of southeast New Mexico and west
Texas. Locally heavy rain will be possible with any storms however
the probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

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...
http://weather.gov/midland

In the hours before

Special weather statement, Jul 15, 4:19 PM CDT, 1 hour 27 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
419 PM CDT SAT JUL 15 2017

TXZ081-152200-
Big Bend Area TX-
419 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL BREWSTER COUNTY
UNTIL 500 PM CDT...

At 419 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles east of Panther Junction, moving northeast at 20 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Big Bend National Park.

LAT...LON 2932 10320 2963 10295 2952 10280 2949 10280
      2945 10283 2941 10283 2940 10281 2937 10284
      2936 10284 2935 10286 2936 10288 2932 10288
      2921 10303
TIME...MOT...LOC 2119Z 221DEG 18KT 2930 10309

33
Special weather statement, Jul 15, 5:12 PM CDT, 34 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
512 PM CDT SAT JUL 15 2017

TXZ061-152245-
Ector TX-
512 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ECTOR COUNTY UNTIL
545 PM CDT...

At 512 PM CDT, Doppler radar was tracking a strong thunderstorm over
Odessa, moving west at 10 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Odessa, West Odessa and Odessa Schelemeyer Field.

This includes Interstate 20 between mile markers 115 and 122.

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.

&&

LAT...LON 3179 10230 3184 10250 3204 10241 3194 10228
      3184 10228
TIME...MOT...LOC 2212Z 106DEG 9KT 3189 10234

29
Special weather statement, Jul 15, 5:22 PM CDT, 24 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
522 PM CDT SAT JUL 15 2017

TXZ050-152245-
Andrews TX-
522 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ANDREWS COUNTY UNTIL 545
PM CDT...

At 521 PM CDT, Doppler radar was tracking a strong thunderstorm over
Andrews, moving west at 30 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Andrews, Florey and Andrews County Airport.

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.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3240 10241 3219 10245 3223 10282 3250 10273
TIME...MOT...LOC 2221Z 105DEG 25KT 3231 10255

29
Special weather statement, Jul 15, 5:32 PM CDT, 14 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
532 PM CDT SAT JUL 15 2017

TXZ052-063-152300-
Glasscock TX-Howard TX-
532 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GLASSCOCK AND
SOUTHEASTERN HOWARD COUNTIES UNTIL 600 PM CDT...

At 532 PM CDT, Doppler radar was tracking a strong thunderstorm near
Forsan, or 15 miles southeast of Big Spring, moving northwest at 10
mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Forsan, Lees and Big Spring Country Club.

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.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3209 10121 3209 10126 3197 10126 3194 10128
      3200 10155 3223 10144 3210 10120
TIME...MOT...LOC 2232Z 113DEG 8KT 3205 10132

29
Special weather statement, Jul 15, 5:46 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Midland/Odessa TX
546 PM CDT SAT JUL 15 2017

TXZ062-152315-
Midland TX-
546 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MIDLAND COUNTY UNTIL
615 PM CDT...

At 545 PM CDT, Doppler radar was tracking a strong thunderstorm over
Greenwood, moving west at 5 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Midland, Greenwood, Cotton Flat, Spraberry, Midland Airpark and
Skywest Airport.

This includes Interstate 20 between mile markers 133 and 149.

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.

&&

LAT...LON 3184 10181 3184 10216 3209 10212 3209 10196
      3207 10180
TIME...MOT...LOC 2245Z 095DEG 6KT 3199 10191

29

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 11:18 AM CDTRiver Flood WarningMAFPresidio19 hr
Jul 15, 3:27 PM CDTRiver Flood WarningMAFPresidio41 hr
Jul 15, 3:27 PM CDTRiver Flood WarningMAFPresidio41 hr
Jul 15, 4:07 PM CDTAreal Flood AdvisoryMAFCulberson, Loving, Reeves3 hr
Jul 15, 4:17 PM CDTAreal Flood AdvisoryMAFBrewster3 hr
Jul 15, 4:19 PM CDTSpecial Weather StatementMAFBrewster41 min
Jul 15, 5:12 PM CDTSpecial Weather StatementMAFEctor33 min
Jul 15, 5:22 PM CDTSpecial Weather StatementMAFAndrews23 min
Jul 15, 5:32 PM CDTSpecial Weather StatementMAFHoward28 min

Nearby

Special Weather Statements in Texas, 2017Every special weather statement in 2017

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.