Special Weather Statement, NWS El Paso, TX

Area Forecast Discussion
National Weather Service El Paso Tx/Santa Teresa NM
347 AM MDT SUN MAY 15 2016

.SYNOPSIS...
The Borderland will see a stark transition today from yesterdays
moist airmass which yielded showers and thunderstorms to a much
dryier and windier west flow pattern this afternoon. Areas west of
the Rio Grande should be dry today as conditions become windy and
dusty. East of the Rio Grande chances remain for a few showers
and thunderstorms. Dry and windy again for Monday with similar
conditions to repeat Tuesday. Late Tuesday through Wednesday
moisture makes a return to area mountains and eastern lowlands.
Cooler weather and increased chances for rain and storms for
Wednesday as a frontal boundary pushes in from the east. Westerlies
return for Thursday and Friday to bring back warmer and dry
conditions. Next weekend another moisture ebbs back in from the
east to give areas east of the Rio Grande more chances for
rain.

&&

.DISCUSSION...
Yesterday's weather turned out pretty much as expected with
isol/scat storms developing by mid-afternoon. Although we
advertised potential for severe the latest indications were for
less vigorous storms...and storms grew strong...but never really
produced severe elements. Last night's sounding revealed +700 CAPE
and PW at .77" with dewpoints hanging in the M/U40s. All better
for storms than Friday's numbers.

Today we will revert back to Friday's numbers...and then
transition to much drier and more stable after mid-afternoon with
drying progressing W to E through the day. The W zones will
quickly become too dry for any pcpn/storms. The central zones will
keep pcpn chances through early afternoon...before drying out. The
E zones will be the only area to keep pcpn/storm potential into
the later parts of the day. Winds will become the BIGGER story
this afternoon as the western zones see wind speeds increase to
right at advisory wind speeds. Will likely issue a wind advisory
for those zones. The central zones will be windy...but sub cat.
Breezy late day east.

Monday and Tuesday we come under a deep dry zonal westerly flow as
we sit near the base of a very broad upper trough. Temps will be
seasonal. The atmosphere will be dry. Winds will continue windy
Monday...breezy Tuesday. Late Tuesday the Pac trough will sag far
enough south that our mountains zones...esp. the Gila...may see
isolated light showers and a few tstorms.

Tuesday night and Wednesday we will have a backdoor frontal
boundary move in from the NE. This will usher Gulf moisture back
into the region. Current model runs push the moisture to the
continental divide and into the Gila...with only the NM bootheel
remaining dry. Thus we add pops back to most zones from Tue eve
through Wednesday night.

Thursday and Friday look to revert back to dry conditions for all
zones as we go back to a zonal flow pattern with W/SW flow
sweeping the moisture back east of the forecast area.

Next weekend the models suggest a weak E/SE push that allows the
dryline and Gulf moisture to work back west. This reintroduces
slight chances for showers and storms over zones east of the Rio
Grande.

&&

.AVIATION...15/00Z-16/00Z.
Gnrly VFR conds all terms thru Pd. Drying W of Rio Grande as winds
become w/sw and increase to 15-25 kts gusts to 40 kts. From an KELP-
KALM line after and east...aft 18z isol to sct -TSRA BKN040-060.
Winds will generally be E to SE 5-15KTS THRU 15Z-18Z but then
shift around to the SW around 10-20G30KTS.

&&

.FIRE WEATHER...
A weak upper ridge currently over the region will break down today
and shift east as the next Pacific system moves over the western
U.S. As it does, winds over area will become westerly and
increase. This will flush the moist air and bring dry air to the
region through Tuesday. Breezy to windy conditions are expected
this afternoon...Monday...and Tuesday. Some areas may see critical
conditions develop today and possibly Monday. As an upper low
moves out of the Pacific Northwest and into Northern Arizona,
eastern zones will see a shift in winds to the southeast, tapping
some more gulf moisture and bringing a chance for showers and
thunderstorms again Wednesday along with cooler temperatures. Warm
and dry again for the end of the week.

&&

.PRELIMINARY POINT TEMPS/POPS...
El Paso                 90  64  88  62 /  20   0   0   0
Sierra Blanca           85  59  87  56 /  30  10   0   0
Las Cruces              88  55  85  54 /  20   0   0   0
Alamogordo              87  58  86  54 /  20   0   0   0
Cloudcroft              65  44  63  42 /  40  10   0   0
Truth or Consequences   87  54  84  54 /   0   0   0   0
Silver City             81  47  78  47 /   0   0   0   0
Deming                  89  54  86  52 /   0   0   0   0
Lordsburg               89  51  87  51 /   0   0   0   0
West El Paso Metro      90  63  87  61 /  20   0   0   0
Dell City               85  54  88  53 /  40  10   0   0
Fort Hancock            88  60  91  59 /  30   0   0   0
Loma Linda              84  59  83  56 /  30   0   0   0
Fabens                  90  61  89  58 /  30   0   0   0
Santa Teresa            89  59  87  58 /  20   0   0   0
White Sands HQ          87  61  85  57 /  20   0   0   0
Jornada Range           87  52  85  50 /  20   0   0   0
Hatch                   90  53  86  50 /  10   0   0   0
Columbus                91  57  88  55 /   0   0   0   0
Orogrande               88  58  86  55 /  20   0   0   0
Mayhill                 73  48  72  44 /  40  20   0   0
Mescalero               74  47  72  44 /  40  10   0   0
Timberon                71  43  70  42 /  40  10   0   0
Winston                 80  43  77  41 /   0   0   0   0
Hillsboro               84  50  82  49 /   0   0   0   0
Spaceport               86  53  84  51 /  10   0   0   0
Lake Roberts            81  38  77  38 /   0   0   0   0
Hurley                  83  46  80  45 /   0   0   0   0
Cliff                   86  44  83  43 /   0   0   0   0
Mule Creek              86  40  81  39 /   0   0   0   0
Faywood                 84  48  81  48 /   0   0   0   0
Animas                  90  52  87  51 /   0   0   0   0
Hachita                 90  53  87  51 /   0   0   0   0
Antelope Wells          89  54  85  50 /   0   0   0   0
Cloverdale              85  50  81  48 /   0   0   0   0

&&

.EPZ Watches/Warnings/Advisories...
NM...Red Flag Warning from 2 PM this afternoon to 8 PM MDT this
     evening for NMZ110-111.

     Wind Advisory from 1 PM this afternoon to 9 PM MDT this evening
     for NMZ401>408.

TX...None.
&&

14-BIRD

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