Northwest Houston, TX, during the early morning.
Northwest Houston, TX, during the early evening.
Northwest Houston, TX, during the late evening.
Locations: Northwest Houston, TX.
Thoughts: The day was warm and dry. No rain for the Houston, TX area that I know of.
Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
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000 FXUS64 KHGX 160143 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 743 PM CST Thu Feb 15 2018 .UPDATE... Onshore flow continues to drag in lower to mid 60 dewpoints across 57-59 degree water which combined with the setting of the sun has led to the rapid onset and slow spread inland of dense sea fog. Visibility at PSX/GLS bouncing around between 1/4 and 1 mile at this time. Have issued a Dense Fog Advisory for the coastal counties. This will need expanding but some questions remain about how far inland the dense fog will develop...fog will develop across most if not all of the CWA but the dense fog will be the question. Todays deeper mixing and starting off with the larger T/Td spreads as well as deeper stronger south-southwesterly flow and few low clouds in the Gulf all lead to mixed signals. Preliminary thinking is that dense fog could reach to the I-10 corridor around 3 am. Anticipating the expansion of the dense fog advisory but not until around 10 or 11 pm when latest guidance is available and observational trends give greater confidence. 45 && .PREV DISCUSSION... /ISSUED 630 PM CST Thu Feb 15 2018/ AVIATION... VFR conditions at the inland terminals gradually deteriorate to IFR/LIFR near the coast where a persistent sea fog bank is beginning to advect inland. Deeper mixing this afternoon than yesterday and a southerly 30 knot low level jet overnight should allow for VFR conditions to persist inland through the evening hours (roughly 06Z) then deteriorate to IFR or LIFR after 06Z as the weakening jet allows for lower ceilings and visibilities to develop inland. UTS and CLL may only see a brief window for these lowered ceilings after 10-12Z with all terminals except GLS improving to MVFR by mid to late morning. Sea fog lingering along the coast may mean IFR/LIFR conditions persist into the mid- afternoon hours. Evening surface analysis shows a cold front moving into the Southern Plains out of Kansas and expect this boundary to reach CLL, UTS, CXO, and possibly IAH during the afternoon hours. Southerly winds 10-15 knots this evening ahead of this front are expected to decrease 5-7 knots overnight and veer to the southwest by midday. After frontal passage, expect north to northwest winds 5-7 knots and MVFR ceilings as low level moisture remains trapped beneath the post-frontal inversion. Huffman PREV DISCUSSION... /ISSUED 329 PM CST Thu Feb 15 2018/ DISCUSSION... Despite persistent onshore winds the past couple days, the lack of a significant boundary and strong mid level ridging centered offshore has limited precip. What it has allowed for is continued sea fog. And that probably won`t change until at least Saturday night & quite possibly longer. A weak front will make its way into southeast Texas Friday then probably stall around the Highway 59 corridor as it begins to lose its upper support. This boundary will likely meander between Highway 59 and near, or just off, the coast thru Saturday evening. Look for fairly good chances of rain across northern parts of the area. Closer to the coast (& proximity of the upper ridge) there won`t be as much forcing so chances diminish as one goes south. Should this front not make it off the coast, the already prolonged period of sea fog will continue well into next week. The stalled front will move back north as a warm front on Sunday as lee side pressures fall. Another stretch of warm and humid wx will then persist into the middle of next week. Rain chances should increase going into midweek as a southwest flow aloft becomes more prominent and the next front makes its way into the region. 47 MARINE... Periods of sea fog (some dense) are expected to persist through the rest of the week and likely into the weekend as the general weather pattern stays in place. Light/moderate onshore winds will help keep the warm airmass in place over the cooler nearshore waters. A weak cold front is expected to move into southeast Texas on late Fri and then stall near coast Sat. Strengthening onshore winds and building seas can be expected late Sun when the frontal boundary washes out. 41 $$ && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 63 68 50 60 52 / 10 20 30 60 30 Houston (IAH) 66 77 57 69 54 / 10 20 20 40 30 Galveston (GLS) 64 73 61 69 59 / 10 10 20 20 20 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...Dense Fog Advisory until noon CST Friday for the following zones: Brazoria...Chambers...Galveston...Jackson... Matagorda. GM...Dense Fog Advisory until noon CST Friday for the following zones: Coastal waters from Freeport to the Matagorda Ship Channel out 20 NM...Coastal waters from High Island to Freeport out 20 NM...Galveston Bay...Matagorda Bay. && $$ Discussion...45
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service Houston/Galveston TX 355 PM CST Thu Feb 15 2018 TXZ163-164-176>179-195>200-210>214-226-227-235>238-162200- Austin-Brazoria-Brazos-Burleson-Chambers-Colorado-Fort Bend- Galveston-Grimes-Harris-Houston-Jackson-Liberty-Madison-Matagorda- Montgomery-Polk-San Jacinto-Trinity-Walker-Waller-Washington- Wharton- 355 PM CST Thu Feb 15 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Tonight Areas of fog should develop overnight. It could be dense at times. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Sea fog can be expected to impact locations close to the coast into the weekend and possibly into early next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. $$
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