Summary: The sky looked to be clear all day with the exception of maybe some white, thin alto or cirro stratus clouds, during the morning and early afternoon. The wind speeds were light with moderate and moderately strong gusts. I believe there was 0 percent chance for rain for the Houston, TX area. I did not hear about or see any rain falling anywhere in the Houston, TX area, during anytime of the day. I did not see, or hear any rain drops falling where I was, during anytime of the day. It felt very cold, during the early and mid-morning. It felt cold, during the late morning and evening. It felt very cool, almost cold, during the early afternoon. It felt very cool, during the mid and late afternoon. It felt cold, during the early night. It felt very cold, during the late night.
Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
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000 FXUS64 KHGX 302322 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 522 PM CST Mon Nov 30 2020 .AVIATION... High pressure will bring light winds and clear skies to area TAF sites tonight into Tuesday. The high will drift east and onshore winds will resume by late morning with moisture increasing in the afternoon. Scattered to broken ceilings expected late in the day and Tuesday night as moisture levels deepen. CB/43 && .PREV DISCUSSION... /ISSUED 346 PM CST Mon Nov 30 2020/ DISCUSSION... Our coldest night of the season so far, and the first freezing temperatures since late February/early March are expected tonight. Nearly all of inland Southeast Texas is expected to fall below freezing for at least a short stretch by dawn, and areas well north of Houston can look for several hours of sub-freezing temperatures. Onshore flow should begin the return of modestly warmer and more humid air tomorrow - but we`ll likely only get back to seasonal averages at the most, with another cold front expected on Wednesday. This one will lack the big surge of cold air, but any drop in temperatures at all is going to take us below average in temperatures into the weekend. This front will also bring another round of showers and storms. While this looks to be a bit more of a glancing blow, the last bout of heavy rain and colder ground sets us up to see a stronger response to rainfall this time around. SHORT TERM [Through Tuesday Night]... At most, the sky in Southeast Texas have been blemished only by scraps of passing cirrus, though temperatures have remained quite cool thanks to colder air being brought into the area by gusty northwest winds. These winds have been a bit slow to subside, and the small craft advisory on the Gulf has been extended because of it (see the Marine section below for more details). High pressure has been seen in mesoanalysis to be slowly making its way westward across Texas through the day, and at 330 pm, is roughly in the dead center of the state. It will continue to blob its way to the east tonight, further causing the winds to diminish into tonight. It will be the clear sky and light winds as this high pressure center drifts by tonight that will set us up for some strong radiational cooling tonight. The forecast continues to take the freezing line all the way to the edge of our coastal zones, so we`ve continued the freeze warning untouched as issued by the midnight shift. Tomorrow, the surface high will be moving off to our east, and this will see winds shift to being onshore during the day. This will start to pump modest amounts of warmer and more humid Gulf air back over the area, ensuring that tonight will be the only night of freezing temperatures, and should help tomorrow be a bit warmer than today. As moisture increases, we`ll also be looking for a new surface low to spin up over West Texas with the support of another upper trough dropping off the Rockies. As it zips along the Red River Valley, we`ll be watching for the development of showers and maybe even a thunderstorm Tuesday night in the moisture inflow channel that sets up over us from the Gulf on Tuesday night ahead of the developing low`s cold front. Most of this action will be on Wednesday, so I don`t want to steal too much of the shift partner`s thunder here, but I do have to note that rain chances will be increasing from the southwest along this moisture axis as we approach dawn on Wednesday morning. LONG TERM [Wednesday Through Monday]... Per models, the best rain chances for SE TX this week still looks to be on Weds with the passage of a strong cold front (and the possible development of a coastal surface low over the Gulf waters). A strong upper low/trof combination moving into the Southern Plains will help to drag this front through the area, but rain chances may be further enhanced by this possible coastal low despite the modest PW returns. As such, the highest POPs should be across southern/coastal counties on Weds. Strong surface high pressure along with flattish ridging at the upper levels will keep the rest of the week cold/dry over SE TX. There are hints that we could see mid/high clouds return (along with perhaps some very slight chances of rain) during the latter parts of the upcoming weekend. The initial upper low/trof on Weds does appear to "split" as it travels over the Southern Rockies, and this remnant energy, which deepens over time, is progged to begin slowly tracking west over the weekend. The increasingly SW flow aloft should be more favorable for the stray shortwave in time. AVIATION [18Z TAF Issuance]... Gusty northeast winds to start, will gradually diminish through the afternoon into the early evening. After a short period of light, variable winds, we`ll see a switch back to onshore flow tomorrow morning. MARINE... Per the ongoing wind/sea trends over the Gulf waters, have extended the SCEC (nearshore waters) and the SCA (offshore waters) for this evening/overnight. Winds and seas are expected to decrease to below criterion by early tomorrow morning...as well as slowly shifting to the SE. This onshore flow will be strengthening some through the day tomorrow, and these moderate SE winds should persist into Weds. The next cold front is still slated to move into the marine waters late Weds afternoon. Moderate to strong north winds are expected to form in its wake...and likely persist into the upcoming weekend. HYDROLOGY... A flood warning was issued for the San Bernard River at Boling, and that gage has recently passed into minor flood stage. It is expected to crest just above flood stage and fall back below flood very early tomorrow morning. Because of this rainfall and rise in river levels, this will likely be an area we will have to keep an eye on for any potential rainfall Tuesday night into Wednesday. TROPICAL... While it is "officially" the last day of the 2020 Atlantic Basin hurricane season, NHC is still watching a feature in the far eastern Atlantic for potential development in the next day or two. Since it is 2020, I probably wouldn`t be surprised to see a named storm in December. Fortunately, we are well into seeing frequent frontal passages and have much cooler sea surface temperatures in the nearshore Gulf. So, for all intents and purposes, any extension that may or may not occur will largely be academic for us here in Southeast Texas. But...I also don`t want to tempt fate at all this year, so I will choose to celebrate the end of the 2020 hurricane season on January 1, 2021. && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 29 59 46 60 37 / 0 0 20 50 20 Houston (IAH) 32 61 52 63 42 / 0 0 40 60 30 Galveston (GLS) 45 65 60 68 48 / 0 0 40 70 40 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...Freeze Warning from midnight tonight to 8 AM CST Tuesday for the following zones: Austin...Brazos...Burleson...Colorado... Fort Bend...Grimes...Houston...Inland Brazoria...Inland Harris...Inland Jackson...Inland Matagorda...Madison... Montgomery...Northern Liberty...Polk...San Jacinto... Southern Liberty...Trinity...Walker...Waller...Washington... Wharton. GM...Low Water Advisory until 6 PM CST this evening for the following zones: Galveston Bay. Small Craft Advisory until 6 PM CST this evening for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM...Coastal waters from High Island to Freeport TX out 20 NM. Small Craft Advisory until 4 AM CST Tuesday for the following zones: Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM...Waters from High Island to Freeport TX from 20 to 60 NM. && $$
Freeze Warning
URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 835 PM CST Mon Nov 30 2020 TXZ163-164-176>179-195>200-210>213-226-227-235>237-300-011400- /O.CON.KHGX.FZ.W.0001.201201T0600Z-201201T1400Z/ Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos- Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin- Waller-Inland Harris-Wharton-Fort Bend-Inland Jackson- Inland Matagorda-Inland Brazoria-Southern Liberty- Including the cities of Crockett, Trinity, Groveton, Madisonville, Huntsville, Shepherd, Coldspring, Livingston, Corrigan, Caldwell, Somerville, College Station, Bryan, Brenham, Navasota, Conroe, The Woodlands, Liberty, Cleveland, Dayton, Columbus, Eagle Lake, Weimar, Sealy, Bellville, Hempstead, Prairie View, Brookshire, Waller, Houston, El Campo, Wharton, Missouri City, Mission Bend, Sugar Land, Rosenberg, First Colony, Pecan Grove, Edna, Ganado, Bay City, Pearland, Alvin, Angleton, and Devers 835 PM CST Mon Nov 30 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST TUESDAY... * WHAT...Sub-freezing temperatures with a few locations enduring several hours with temperatures in the middle to upper 20`s in the coldest locations. * WHERE...Portions of south central and southeast Texas. * WHEN...From midnight tonight to 8 AM CST Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
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