Area Forecast Discussion
Issued by NWS Midland/Odessa, TX

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FXUS64 KMAF 181119

Area Forecast Discussion
National Weather Service Midland/Odessa TX
619 AM CDT Sun Mar 18 2018



Have a few light showers this morning along NM/TX border but these
should be short lived as much drier air expected behind Pacific
front. Wind will become W/SE at all TAF sites and increase
significantly by 17z. Sustained wind in the 25-40kt range can be
expected with gusts to 50kts possible... especially at CNM and
HOB. Have issued AWW at MAF for wind. Have added BLDU with MVFR
vsbys to the TAFs but local IFR will be possible. Wind speeds will
decrease by sunset.


.PREV DISCUSSION... /issued 353 AM CDT Sun Mar 18 2018/


..High winds and extremely critical fire weather still on track
to hit later today and this evening...

Powerful upper level storm system on track to move across the
southern Rockies and Plains late this afternoon and tonight. Only
major change to the forecast was to upgrade the Wind Advisory to
a High Wind Warning for the northern and central Permian Basin of
west Texas this afternoon through mid evening. GFS forecast
soundings indicating 40 to 50 knots right off the surface in these
areas in the 22z/18 to 02z/19 time frame with deep mixing. Will
keep the remaining warnings and advisories as is. Added a slight
chance of showers this morning across the extreme northern Permian
Basin per radar as lead shortwave moves over the region. Went above
guidance on temperatures this afternoon due to strong downslope

Wind should decrease later this evening due to nocturnal cooling
but it will still be breezy to windy overnight areawide due to
the stout surface pressure gradient.

After tonight it looks like it will be a quiet week as zonal flow
early in the week transitions to some ridging aloft by Wednesday
and Thursday and then mainly zonal flow again by late in the week
and next weekend. Near normal temperatures are expected Monday
and Tuesday but should transition to much above normal by Wednesday
through the weekend as a couple of lee surface lows/troughs

Today continues to resemble outbreaks days of the past. Models are
in good agreement on the timing/placement of the upper trough set to
center over NE NM by 00Z Mon. NAM forecast soundings mix a little
lower than 24 hours ago--725mb vs 675mb--but the GFS is holding firm
at mixing to 675mb 00Z Mon.  At this level, 60+kt westerlies are
forecast along the mountains from the Guadalupes to the Sangre de
Cristos, w/slightly lesser velocities extending east into the Texas
Panhandle.  Just north of the CWA, a 100kt jet core is forecast at
H5.  All of this will be on the windward side of the LLTR. Models
continue to develop a fairly tight pressure gradient, which will
negate any mixing inhibition should any cloud cover stream over the
area.  Attm, cloud cover looks slim this afternoon.  RH looks to go
below 15% during the afternoon everywhere except maybe the
Guadalupes. However, RH there will be near-critical, and w/RFTIs of
5-6 and w/ERCs in the 50th-70th %ile range or better, slightly
higher RH won`t factor in.  Elsewhere, 5-6 RFTIs and 70th-90th
percentile ERCs cover most of the area.  A ridge of extreme (7) RFTI
runs SW-NE thru the area.

CIPS analogs suggest today will be similar to outbreaks of the past,
and we will continue to stress the heightened dangers expected in
the warning. Because pressure gradients are forecast to stay
tight into Monday, RH recovery will be lousy tonight, and
w/critical RH anticipated again Mon afternoon, the RFW is in
effect until 02Z Tuesday.


Big Spring                     81  45  71  39 /  10   0   0   0
Carlsbad                       75  42  69  34 /  10   0   0   0
Dryden                         92  53  81  44 /   0   0   0   0
Fort Stockton                  82  47  71  39 /   0   0   0   0
Guadalupe Pass                 64  36  61  40 /   0   0   0   0
Hobbs                          72  40  66  31 /  10   0   0   0
Marfa                          73  33  66  30 /  10   0   0   0
Midland Intl Airport           80  46  71  38 /  10   0   0   0
Odessa                         80  42  71  37 /  10   0   0   0
Wink                           81  40  71  36 /  10   0   0   0


NM...Red Flag Warning from 11 AM this morning to 8 PM MDT Monday for
     Guadalupe Mountains-Southeast Plains.

     High Wind Warning from 9 AM this morning to midnight MDT tonight
     for Guadalupe Mountains of Eddy County.

     High Wind Warning from noon today to 8 PM MDT this evening for
     Central Lea County-Eddy County Plains-Northern Lea County-
     Southern Lea County.

TX...Red Flag Warning from noon CDT /11 AM MDT/ today to 9 PM CDT /8
     PM MDT/ Monday for Andrews-Big Bend Area-Borden-Crane-
     Davis/Apache Mountains Area-Dawson-Ector-Gaines-Glasscock-
     Guadalupe Mountains-Howard-Loving-Marfa Plateau-Martin-
     Midland-Mitchell-Pecos-Presidio Valley-Reagan-Reeves County
     and Upper Trans Pecos-Scurry-Terrell-Upton-Van Horn and
     Highway 54 Corridor-Ward-Winkler.

     Wind Advisory from 1 PM this afternoon to 9 PM CDT this evening
     for Big Bend Area-Crane-Glasscock-Marfa Plateau-Pecos-
     Presidio Valley-Upton-Ward.

     High Wind Warning from 10 AM CDT /9 AM MDT/ this morning to 1 AM
     CDT /midnight MDT/ Monday for Guadalupe Mountains-Van Horn
     and Highway 54 Corridor.

     High Wind Warning from 1 PM this afternoon to 9 PM CDT this
     evening for Andrews-Borden-Davis/Apache Mountains Area-
     Reeves County and Upper Trans Pecos-Scurry-Winkler.


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