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
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS64 KHGX 270006 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 706 PM CDT Tue Mar 26 2024 ...New AVIATION... .SHORT TERM... (This evening through Wednesday Night) Issued at 312 PM CDT Tue Mar 26 2024 For the most part, cool and clear conditions are expected across SE TX tonight as surface high pressure builds down into the region. We should see temperatures fall quickly this evening, with lows in the lower 40s north...mid and upper 40s central and south and the lower and mid 50s along the coast. However, this respite from rain could be very brief. A broad trough at the mid/upper levels is set to move east across the Plains tomor- row...bringing with it a couple of shortwaves which could be enough to generate some widely scattered showers (as well as some isolated thunderstorms). While overall moisture levels are progged to be low, PWs do appear to climb into the 0.7-1.0 inch range through the day. This along with a slightly favorable upper jet placement(LRQ) could support 20-30% POPs for much of the region...starting from the west late tomorrow morning through the afternoon. A second weaker short- wave tomorrow evening may not have enough to work with, but hi-res/ CAMS do indicate a weaker band moving across the northern CWFA dur- that time. Highs tomorrow will be in the upper 60s to around 70... with lows in the mid and upper 40s to around 50. 41 && .LONG TERM... (Thursday through next Monday) Issued at 312 PM CDT Tue Mar 26 2024 Surface high pressure will transition off to the east allowing onshore winds to resume by late Thursday. This will bring some lower level Gulf moisture back into the area and a gradual return to muggier conditions with lows in the 60s. Combination of some subtle mid level ridging and overall shallow depth of quality moisture should keep rain chances on the low-nil side until early next week. Next best shot of precipitation looks to be around Tuesday with the approach of the next western trof and associated frontal boundary. 47 && .AVIATION...
-- Changed Discussion --
(00Z TAF Issuance) Issued at 645 PM CDT Tue Mar 26 2024 Mostly VFR conditions expected throughout the TAF period across the SE TX sites. N-NE winds around 5 KTS tonight and 5-10 KTS on Wed. Winds become VRB Wed afternoon thru Thu morning as a sfc boundary meanders over the region. There is a chance for showers and possible iso storms Wed late afternoon or evening as an upper level trough moves across the Southern Plains, but coverage and intensity will depend on how strong the cap will be at that time. For this TAF set, mentioned VCSH for that timeframe for all sites except LBX/GLS. Storms, if any, should exit to the east by around midnight. 24
-- End Changed Discussion --
&& .MARINE... Issued at 312 PM CDT Tue Mar 26 2024 A lingering elevated, longer period southerly swell will be on a gradual decline tonight and Wednesday. At 230pm, seas at buoy 42019 were are running around 7ft. Will maintain the small craft advsy offshore til 7pm and see if we can get them to fall another foot. May need to issue another short term extension if they don`t. Otherwise, northeast winds will generally prevail into early Thursday. As surface high pressure moves off to the east, and lee side pressures fall, onshore winds should resume late Thursday and gradually increase in speed heading into the weekend. Dewpoints will probably approach nearshore water temps over the weekend, so wouldn`t be surprised to see some patchy fog/haze develop...but wind speeds currently look high enough to mitigate a substantial dense fog threat. 47 && .PRELIMINARY POINT TEMPS/POPS...
-- Changed Discussion --
College Station (CLL) 45 67 47 75 / 0 20 20 0 Houston (IAH) 49 69 50 77 / 0 10 10 0 Galveston (GLS) 58 68 60 70 / 0 10 0 0
-- End Changed Discussion --
&& .HGX WATCHES/WARNINGS/ADVISORIES... TX...High Rip Current Risk until 7 PM CDT this evening for TXZ436>439. GM...Small Craft Should Exercise Caution until 7 PM CDT this evening for GMZ350-355. Small Craft Advisory until 7 PM CDT this evening for GMZ370-375. && $$

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