JANUARY 2018 - Seasonal WX Week/Pacific Front Saturday

[DoctorMu]

Snow band appears to be moving ESE towards northern Harris Co. and Montgomery Co eventually.

[sau27]

Keep in mind the radar in that image is scanning rather high up due to its distance from the radar site. Much of what it is picking up likely isn't quite reaching the ground.

[MontgomeryCoWx]

As the moisture is squeezed here, temps should drop.

[srainhoutx]

EWX (NWS San Antonio/Austin) about to issue a Winter Weather Advisory due to roads/bridges/overpasses icing over.

[DoctorMu]

As the moisture is squeezed here, temps should drop.

and dew point can rise.

[stormlover]

HRRR is stronger and stronger lol

[sau27]

Maybe I am missing something but I'm not sure why the 22z HRRR went to all mixed precip. The model sounding has the whole profile below freezing with no warm nose over Harris County.

[davidiowx]

And it appears to be dying out on radar..

[stormlover]

around 8 is when radar is supposed to pick up

[davidiowx]

around 8 is when radar is supposed to pick up

I’ll be watching, if I haven’t gone cross eyed yet

[srainhoutx]

Tuesday afternoon briefing from Jeff:

Hard Freeze warning in effect for tonight for all areas…including the coastal counties.

Band of light sleet/snow expected to develop and move across the region this evening between 600pm-midnight with a light dusting of accumulation possible.

Very cold conditions continue over the region today with College Station now on its 22 straight hour at or below freezing. BUSH IAH has only managed 33 this afternoon and as the sun sets expect the temperatures to fall quickly into the 20’s. Tail end of upper level short wave over TX appears to bring lift across the region this evening resulting in a band of mixed precipitation. While low level remain extremely dry, as experienced this morning, there appears to be enough moisture to allow light sleet/snow to reach the ground. The energy this evening may be a bit stronger than the episode this morning and a few quick bursts of moderate sleet/snow will be possible. With surface temperatures falling well below freezing this evening light accumulations will be possible especially on elevated surface which have now cooled close to or below freezing. This includes bridges and overpasses which can become slick as the initial sleet/snow melts and then refreezes into a thin layer of ice…as seen south of I-10 today over portions of Galveston and Brazoria Counties with the morning sleet. Will need to watch radar trends closely this evening for any enhancement of precipitation bands over the region. Radar is starting to show some echo enhancements near Austin which may be the start of this event.

Main item of concern tonight will be how cold will low temperatures fall. As skies clear after midnight and with the arctic surface high centered nearly over the region expect near excellent cooling conditions. Expect a damaging hard freeze for all areas with possible upper 10’s Walker, San Jacinto, Polk, Trinity, and Madison Counties. If skies are slower to clear then add about 2-5 degrees to most areas (or mid to upper 20’s).

Forecast Low Temperatures Wednesday Morning:

North of HWY 105: 18-22

North of US 59: 21-25

South of US 59: 24-28

[DoctorMu]

And it appears to be dying out on radar..

Austin radar isn't seeing it, but Houston radar is now picking up returns, mostly W and SW. Probably almost all virga...but it's snowing a few thousand feet in the air.

[StormOne]

Hard to get precip to reach the ground with dew points where they're at right now.

[srainhoutx]

Light mist and 32F here in NW Harris County

[don]

Heavier radar returns are starting to show up across northeast areas

[Texaspirate11]

19 degrees and ice pellets in the Hill Country yesterday...
And I come home to sleet and potential 21 degrees....
How many days until Summer??? I'm over winter....

[davidiowx]

Heavier radar returns are starting to show up across northeast areas

Yep sure looks like it. They may be getting in on some good winter precip if they keep going. Maybe the HRRR nailed it earlier

[Heat Miser]

Maybe that'll spread to the southwest a tad? Definitely some good returns, the most I've seen since 2PM. If it starts up in earnest I just hope it's when I'm on my way home at 12 AM, and over the Causeway. Pelican Island bridge was actually closed earlier today with the little sleet event this morning. Doesn't take very much to make roads extremely hazardous.

[jasons2k]

I’m getting some small, light flurries up here now.

[srainhoutx]

I’m getting some small, light flurries up here now.

Relayed your report to HGX Jason.