Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

289
FXUS64 KHGX 142129
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
329 PM CST Thu Dec 14 2017

.DISCUSSION...

The weak cold front is near DWH and is moving southeast. Its
passage is fairly uneventful with weak NW winds in its wake and no
shower activity occurring. Winds will increase late tonight and
early Friday as the pressure gradient tightens, especially near
the coast and offshore. Areas of light rain are occuring west of
CRP this afternoon and are moving NE toward the coastal bend.
Expect to see some light rain along the coast tonight and into
Friday morning. Do not expect areas north of I-10 to see any
measurable rain tonight.

The next chance of rain will occur on Saturday afternoon areawide when
much deeper moisture will return to the area. A short wave trough
lifting northeast out of the base of the deep upper level trough
centered over the SW U.S, will set the stage for a good chance of
showers and thunderstorms across the area Saturday night. A
coastal sfc low will form and will move northeast along the coast
as well, creating the chance of a few strong storms along the
immediate coast and offshore late Saturday night.

In the wake of the Saturday night storm system, the mid/upper
level flow will remain out of the SW, with weak disturbances
producing a chance of rain near the coast and offshore on Sunday.
and areawide on Monday. Another weak cold front is expected on
Tuesday with dry conditions on Wednesday and then moisture
returns late next week ahead of yet another and more significant
front late Thursday/early Friday. 33

&&

.Marine...
Although the weak cold front will push off the coast this evening,
winds will not increase to 20 to 25 knots until after midnight. A
SCA is in effect from 2 AM Friday through Friday afternoon for the
marine area. A coastal low is expected to form Saturday night and
will track northeast up the coast bringing showers and
thunderstorms, increasing winds, elevated seas, and potentially a
period of sea fog. Improving conditions on Sunday as this
disturbance pushes east of the area. However, wouldn`t be
surprised to eventually see a return of sea fog sometime Sun
through Mon ahead of the next front expected on Tue morning.

33

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      42  59  39  55  46 /   0   0   0  40  90
Houston (IAH)              46  57  41  57  50 /  10  10   0  30  80
Galveston (GLS)            52  56  48  59  56 /  30  30   0  30  70

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...Small Craft Advisory from 2 AM to 9 AM CST Friday for the
     following zones: Galveston Bay...Matagorda Bay.

     Small Craft Advisory from 2 AM to 6 PM CST Friday for the
     following zones: Coastal waters from Freeport to the
     Matagorda Ship Channel out 20 NM...Coastal waters from High
     Island to Freeport out 20 NM...Waters from Freeport to the
     Matagorda Ship Channel from 20 to 60 NM...Waters from High
     Island to Freeport from 20 to 60 NM.

&&

$$

Discussion...33



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.