Area Forecast Discussion
Issued by NWS Midland/Odessa, TX

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000
FXUS64 KMAF 111018
AFDMAF

Area Forecast Discussion
National Weather Service Midland/Odessa TX
418 AM CST Wed Jan 11 2017

.DISCUSSION...

See 12Z Aviation Discussion below.

&&

.AVIATION...

VFR conditions will prevail next 24 hours under a few high
clouds. SW flow will continue, becoming gusty this afternoon.

&&

.PREV DISCUSSION... /issued 351 AM CST Wed Jan 11 2017/

DISCUSSION...

Record warm temperatures expected today before a strong, springlike
storm system affects the area this weekend.

Zonal mid level flow over the Southern Rockies has induced an area
of surface low pressure over western Kansas this morning. This will
lead to downsloping, southwesterly surface winds across much of the
region today. Expect high temperatures to reach well into the 70`s
and 80`s with 90 degrees not out of the question along the Rio Grande
later this afternoon. The record high for Midland Intl today is 78
set in 1935.

Our weekend storm system will begin to take shape along the West
Coast Thursday, turning mid level winds more to the southwest over
our region. Expect another warm day Thursday, but increasing
moisture and clouds should keep temperatures from reaching any
records. The upper trough will cut off from the main flow Friday and
slide southeast into northern Mexico. Meanwhile a cold front will
move south into the Southern Plains Friday and likely stall across
the area. Forecast confidence drops pretty quickly by this time as
models struggle with how far south the cold airmass will get. The
GFS is the warmest and furthest north with the front while most of
the other models move the front to near the Pecos River before
stalling it Friday afternoon. Will lean toward the NAM and ECMWF
as they have been most consistent. Luckily, it appears temperatures
even behind the front will stay above freezing during the day Friday
as precipitation begins to develop across the area.

Several factors will then come into play this weekend hopefully
leading to widespread rainfall across much of the area. Large scale
ascent will increase with the approach of the upper low as will
isentropic upglide along and behind the stalled cold front. As it
appears now, our best shot of precipitation, likely showers and
thunderstorms, will come Saturday night into Sunday as the upper low
lifts north across New Mexico. Heavy rain will be possible and may
lead to runoff and localized flooding due to dormant vegetation
and a hard, dry ground. Again, the current forecast will keep all
precipitation in the liquid form as freezing temperatures look to
remain off to the north. This could change, but the trend as of
late has been for overall warmer temperatures this weekend.

A cold front will bring drier and cooler conditions early next week
as the upper low weakens over the Plains.

FIRE WEATHER...

08Z observations at several sites in the Guadalupes report critical
20` winds under zonal flow aloft.  This zonal flow has been
persistent over the past 24 hours, and models forecast it to
continue another 24 more.  Latest NAM forecasts 750mb westerlies
over the next 24 hours of 45-50kts at times.  Temperatures today
will be unseasonably warm, resulting in critical RH, beginning in
the northern reaches of NMZ114 and quickly spreading south into
TXZ258.  The ERC seasonal graph for the Trans Pecos shows ERCs have
climbed to normal.  Forecast Fire Danger for the Guadalupes is high-
extreme, so we`ll issue a RFW for that area. Adjacent plains will
have critical RH this afternoon, but 20` winds don`t look to pan
out. However, we`ll note the dry conditions in the HWO.

&&

.PRELIMINARY POINT TEMPS/POPS...
Big Spring                     82  45  73  49 /   0   0   0  20
Carlsbad                       77  43  73  44 /   0   0   0  10
Dryden                         82  48  73  55 /   0   0   0  10
Fort Stockton                  83  45  76  51 /   0   0   0  10
Guadalupe Pass                 68  47  67  47 /   0   0   0   0
Hobbs                          76  39  70  42 /   0   0   0  10
Marfa                          76  36  73  37 /   0   0   0   0
Midland Intl Airport           81  45  74  53 /   0   0   0  10
Odessa                         80  45  74  53 /   0   0   0  10
Wink                           79  41  74  48 /   0   0   0  10

&&

.MAF WATCHES/WARNINGS/ADVISORIES...
NM...High Wind Warning until 3 AM MST Thursday for Guadalupe
     Mountains of Eddy County.

     Red Flag Warning from 10 AM this morning to 5 PM MST this
     afternoon for Guadalupe Mountains.

TX...High Wind Warning until 3 AM MST Thursday for Guadalupe
     Mountains.

     Red Flag Warning from 10 AM this morning to 5 PM MST this
     afternoon for Guadalupe Mountains.

&&

$$

44/29/44



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