Rain starts to clear out after a rainy New Year’s Eve day

Your midnight plans have clear weather ahead
Published: Dec. 30, 2020 at 5:56 AM CST|Updated: Dec. 31, 2020 at 1:54 PM CST
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BRYAN, Texas (KBTX) -

4pm Thursday Update

Rain is starting to clear out of the Brazos Valley and the flash flood watch has expired. While the rain may have slowed, there is still a flood concern along the Navasota River near Easterly / the Highway 79 crossing between Leon & Robertson Counties.

Although some showers may linger, after these last few storms make their way out of the Brazos Valley, the rest of your NYE plans are in the clear with only cloudy skies and chilly temperatures for the rest of your 2020.

2pm Thursday Update

As this rain event slowly starts to end across the Western Brazos Valley, ongoing rainfall is now causing road issues and concerns on the east side of the area. Below is an update from the Crabbs Prairie Volunteer Fire Department, regarding roads in Walker County:

⚠️FM 2989 at the Bedias Creek is currently impassable.⚠️ 🛑 DO NOT ATTEMPT TO DRIVE THRU WITH WATER ON THE...

Posted by Crabb's Prairie VFD on Thursday, December 31, 2020

The National Weather Service has issued a FLOOD WARNING for the Navasota River near Easterly / the Highway 79 crossing, straddling Leon & Robertson Counties. As water continues to steeply rise today to bankfull, the river is expected to crest at 19.5′, half a foot above MINOR flood stage, midday Saturday.

A Flood Warning is in effect for the Navasota River near Easterly through the weekend. Minor...
A Flood Warning is in effect for the Navasota River near Easterly through the weekend. Minor flood stage is expected to be reached by early Saturday.(National Weather Service)

Low-land flooding is expected from just south of Easterly to south of Highway 21 through the weekend. Cattle in that pasture land could be impacted.

1pm Thursday Update

The beginning of the end is in sight. As of the hour, back edge of this rain event is moving closer to the Western and Southwestern Brazos Valley.

A FLOOD WARNING continues for Central Waller County, south of 290, until 2pm. 2″ to 4″ of rain has fallen, with more ongoing. The river gauge for Mound Creek at FM 362 indicates that the water has come out of its banks near Waller. Irons Creek at FM 259 is also in a similar state. As of 11am, other streams in the warning area were near the top of their banks.

Another 0.25″ to 0.50″ of rain is expected today west of the Brazos River. 0.5″ to 1″ of rain remains possible from the Highway 6 corridor to I-45. 1″ to 1.5″ more rain may fall from I-45 to the east before the last of the rain moves out between 3pm and 5pm.

PinPoint Radar rainfall estimate, as of 12pm Thursday
PinPoint Radar rainfall estimate, as of 12pm Thursday(KBTX)

Rainfall totals as of the noon hour:

  • Easterwood Airport (College Station): 1.88″
  • Coulter Field (Bryan): 1.80″
  • Cameron: 3.49″
  • Hearne: 1.88″
  • Centerville: 1.40″
  • Crockett: 2.75″
  • Giddings: 1.21″
  • Caldwell: 0.86″
  • Madisonville: 2.17″
  • Huntsville: 3.16″
  • Navasota: 3.31″
  • Brenham: 2.53″
  • Bellville: 4.54″
  • Hempstead: 3.17″
  • Coldspring: 1.78″
  • Carlos; 2.52″
  • Madison County (near I-45 & Spur 67): 4.10″

Thursday Morning Update

Rain has fallen at a responsible rate overnight, but many of us are saturated now, thanks to the off/on rain we have had since yesterday afternoon. The Watch remains in effect through mid-afternoon, where some localized flooding issues may arise as a couple more rounds of heavy rain are likely before we clear out to end the year.

Best overall chance for rain and a few more storms will come from mid-morning through early afternoon. An additional 1-2″ widespread is likely, with isolated additional amounts of 3-4″ still possible.

12:30am Thursday Update

Widespread rainfall continues for a majority of the Brazos Valley at this hour. Higher rain rates are starting to materialize across North / Central Austin and Central / North Waller Counties. Rainfall has been light through the night, along with the south side of Grimes County. While there should not be issues immediately, if this slow-moving, heavier rain can keep up there may be some minor ponding issues that take shape.

Severe Weather Outlook for December 31, 2020
Severe Weather Outlook for December 31, 2020(KBTX)

Looking ahead to Thursday’s ongoing rain and thunderstorm potential, some promising news for the Brazos Valley. The Storm Prediction Center has removed all but San Jacinto and Montgomery Counties from the day’s severe weather outlook. Strong storms remain possible with heavy rain, thunder, lightning, and small sub-quarter size hail in the most extreme case.

11pm Wednesday Update

Widespread rain has consumed just about all of the Brazos Valley as we draw closer to midnight. Only a small area of real estate in Milam and Lee Counties have dry skies at this hour.

A FLOOD ADVISORY remains in place for West Montgomery and Southwest Walker Counties until 12:30am. PinPoint radar estimates 2″ - 4″ of rain has fallen, in that area since earlier in the evening. Highest rainfall totals have been confined to Waller, Montgomery, Walker, and San Jacinto Counties between 6pm and 11pm. 1″ to 3″ of rain fell earlier in the day across Robertson, Milam, and Lee Counties.

PinPoint Radar estimated rainfall totals as of 11pm Wednesday
PinPoint Radar estimated rainfall totals as of 11pm Wednesday(KBTX)

Widespread rain is expected to continue throughout the night.

9pm Wednesday Update

Colder air has seeped into the entire Brazos Valley tonight. Temperatures are down in the 40s and 50s, with a 25-30mph wind making it feel colder. With the colder air in place, the severe weather threat has ended for the night. Occasional heavy rain may still be a concern from time to time.

A FLOOD ADVISORY remains in effect for Central and Western Montgomery County until 10:30pm. 1″ - 3″ of rain is estimated to have fallen over the advisory area with another 1″ to 2″ possible before midnight.

A steady supply of Gulf moisture is feeding into the area from South Texas, pooling along the very slow-moving / nearly stalled out cold front just south of the Brazos Valley. This will allow light-to-moderate rain to continue through the overnight hours. As an area of low-pressure approaches from the south and southwest, areas of heavier rain and non-severe storms could form in the early pre-sunrise hours of Thursday.

Most rainfall tonight should be manageable, although a few more Flood Advisories could materialize around the I-45 corridor where minor street and creek flooding may be a concern. Heaviest rainfall looks to hold off until Thursday morning to midday as that area of low-pressure spirals through the Brazos Valley.

By the time all is said and done, 1"-3" can be expected with a localized higher totals  of...
By the time all is said and done, 1"-3" can be expected with a localized higher totals of 3"-5"+ not out of the question.(KBTX)

By the time this system moves off to the north Thursday afternoon, widespread rainfall totals of 1″ - 3″ can be expected with a corridor of 3″ - 5″+ not out of the question. As of Wednesday afternoon, that band of higher rainfall totals looks to sit east of the Navasota River, but will need to be monitored throughout the overnight hours depending on how far south the front can travel. Regardless, keep the rain gear and your KBTX PinPoint Weather App handy over the next 24 hours!

Although New Years Eve starts soggy, conditions will improve through the afternoon as we start to dry things out in time for late New Years Eve plans. Take the jacket if you’re headed out late Thursday to ring in the new year; it’ll be chilly and breezy as cold air continues to work its way in!

New Year's Eve starts soggy with improving conditions throughout the day.
New Year's Eve starts soggy with improving conditions throughout the day.(KBTX)

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