Texas Winter 2024-2025

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nlosrgr8
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Re: Texas Winter 2024-2025

#6521 Postby nlosrgr8 » Sun Jan 19, 2025 1:50 pm

I really wish there was a North Texas and South Texas Thread….i get confused wondering who is who in here and if they are talking my area, Houston, or Dallas area, or Austin…. I know what affects one may affect all, But in different ways….i lookup where folks are from to find out. Just a suggestion….


I also find it difficult to know whether people are for snow and ice or against it….i am firmly in the against it column…but the kids are not.
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Re: Texas Winter 2024-2025

#6522 Postby TomballEd » Sun Jan 19, 2025 1:52 pm

Test Image

Thanks @AustinMan
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Re: Texas Winter 2024-2025

#6523 Postby Steve » Sun Jan 19, 2025 2:03 pm

nlosrgr8 wrote:I really wish there was a North Texas and South Texas Thread….i get confused wondering who is who in here and if they are talking my area, Houston, or Dallas area, or Austin…. I know what affects one may affect all, But in different ways….i lookup where folks are from to find out. Just a suggestion….


I also find it difficult to know whether people are for snow and ice or against it….i am firmly in the against it column…but the kids are not.


You can make any thread you want if you want it to be for a specific area (unless that’s restricted in the winter subdirectory).
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Re: Texas Winter 2024-2025

#6524 Postby Brazoria_cnty99 » Sun Jan 19, 2025 2:15 pm

When will our watches be upgraded to warnings?
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Re: Texas Winter 2024-2025

#6525 Postby Charleswachal » Sun Jan 19, 2025 2:16 pm

Brazoria_cnty99 wrote:When will our watches be upgraded to warnings?


Far southern texas by the Mexico border has already begun the upgrade. Most should be upgraded by the end of today
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Re: Texas Winter 2024-2025

#6526 Postby txtwister78 » Sun Jan 19, 2025 2:28 pm

Image

Image
Last edited by txtwister78 on Sun Jan 19, 2025 2:33 pm, edited 2 times in total.
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Re: Texas Winter 2024-2025

#6527 Postby sphelps8681 » Sun Jan 19, 2025 2:31 pm

nlosrgr8 wrote:I really wish there was a North Texas and South Texas Thread….i get confused wondering who is who in here and if they are talking my area, Houston, or Dallas area, or Austin…. I know what affects one may affect all, But in different ways….i lookup where folks are from to find out. Just a suggestion….


I also find it difficult to know whether people are for snow and ice or against it….i am firmly in the against it column…but the kids are not.


As I have been told this is DFW thick of people responding. You never know where they are talking about without some sort of map. Which it had different areas of the state.
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Re: Texas Winter 2024-2025

#6528 Postby pwrdog » Sun Jan 19, 2025 2:33 pm

Brazoria_cnty99 wrote:When will our watches be upgraded to warnings?
@$ 24 hrs before expected onset.. so maybe 6pm today for some..
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Re: Texas Winter 2024-2025

#6529 Postby Stratton23 » Sun Jan 19, 2025 2:51 pm

18z HRRR looks really good, widespread 4-7 inches of snow for the majority of se texas and points east
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Re: Texas Winter 2024-2025

#6530 Postby Portastorm » Sun Jan 19, 2025 3:29 pm

Good, detailed discussion this afternoon out of NWSFO Austin/San Antonio. Interesting portion of it:

First, we`d like to note some concerns regarding snow/sleet ratios
and snow shape/types. Model soundings continue to show across our
region, a dry layer aloft across the dendrite growth zone (-12 to -
18 degrees) for majority of the event. The models show better
moisture closer to or across the dendrite growth zone farther east
and as you get into the Houston CWA. Additionally, the ice
containing clouds will all trend mainly warmer than -10 degrees C
below 700 mb and would likely result in a concentration of some
supercooled liquid (water). This may help lead to ice riming on
the snow and/or sleet pellets that fall. The coldest temperatures
aloft that the flakes form also are in the favorable zone where
snowflake type may be more in the column/needle type than
plates/dendrites. These processes and sleet mixing in could lower
snow to liquid ratios. NBM seems to support these notions and
indicate ratios generally in the 4:1 to 8:1 level over most of the
region.

Now, let`s get down to the accumulations. This forecast calls for 1
to 2 inches of snow and sleet accumulation near the I-35 corridor
and points east with slightly higher totals up to 3 inches over
portions of Lee, Fayette and Lavaca counties. As indicated on some
of the guidance, for example the ECMWF, some isolated higher totals
will be possible with any mesoscale banding of heavier
precipitation. Elsewhere, up to an inch of snow will be possible.
Regarding ice accretion, around a tenth of an inch will be possible
across our southeastern most counties around DeWitt County with a
few hundredths of an inch otherwise for locations around or just
north of the I-10 corridor. Like with snow/sleet accumulation,
isolated totals are possible if temperatures fall faster or trend
colder or where mesoscale banding of any heavier precipitation
occurs.

Travel is expected to become difficult and inadvisable, especially
across elevated bridges and overpasses, as roads become slick and
hazardous. These travel impacts and with the latest forecast
accumulation amounts in mind, we will elect to upgrade portions of
the Winter Storm Watch to a Winter Storm Warning across the I-35
corridor and points east. A Winter Weather Advisory will also be
issued to buffer the Warning across the remainder of South-Central
Texas.
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Re: Texas Winter 2024-2025

#6531 Postby txtwister78 » Sun Jan 19, 2025 3:36 pm

One thing to note is some models are really trending this further south with time as colder/drier air surges in from the north and the low gets pushed further off the coast. 3km NAM not all that impressed for example with QPF. HRRR more bullish but QPF drops off significantly north of SA and 30-40 miles north of I-10 further east. Something to watch in future runs despite being 24 hours or so away from things beginning. Possible to see some nudges back north but it's been a trend south today with moisture.

Image

Image
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Re: Texas Winter 2024-2025

#6532 Postby fendie » Sun Jan 19, 2025 3:38 pm

Stratton23 wrote:18z HRRR looks really good, widespread 4-7 inches of snow for the majority of se texas and points east


Image

Image
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Re: Texas Winter 2024-2025

#6533 Postby Brent » Sun Jan 19, 2025 3:43 pm

Snow starting at the Eagles game
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Re: Texas Winter 2024-2025

#6534 Postby TeamPlayersBlue » Sun Jan 19, 2025 3:46 pm

Ntxw wrote:That 1895 map a few days ago still looks good about now. Such a rare event like that down the coast, this will probably be this century's memorable event for you folks down there.


The setup looks very very similar, but the high pressure isnt as strong. I think thats the only difference.
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Re: Texas Winter 2024-2025

#6535 Postby Portastorm » Sun Jan 19, 2025 3:49 pm

txtwister78 wrote:One thing to note is some models are really trending this further south with time as colder/drier air surges in from the north and the low gets pushed further off the coast. 3km NAM not all that impressed for example with QPF. HRRR more bullish but QPF drops off significantly north of SA and 30-40 miles north of I-10 further east. Something to watch in future runs despite being 24 hours or so away from things beginning. Possible to see some nudges back north but it's been a trend south today with moisture.

https://images.weatherbell.com/model/nam-nest/tx/snow_24hr_kuchera/1737309600/1737489600-PXyFszhU8z0.png

https://images.weatherbell.com/model/hrrr/tx/total_precip_inch/1737309600/1737482400-5HN3RbLBOoc.png


Now that's NOT the kind of maps I want to see, txtwister78! Quite possible though. Have you looked at the other meso models to see how the trend compares?
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Re: Texas Winter 2024-2025

#6536 Postby Stratton23 » Sun Jan 19, 2025 3:50 pm

I dont really buy the NAM that much, its by far the most suppressed of the short range guidance and really doesn’t have much moisture, id calling it a big outlier right now
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Re: Texas Winter 2024-2025

#6537 Postby Steve » Sun Jan 19, 2025 3:54 pm

Stratton23 wrote:I dont really buy the NAM that much, its by far the most suppressed of the short range guidance and really doesn’t have much moisture, id calling it a big outlier right now


RDPS and Icon are running so we'll have some comparison and contrast in a few minutes.
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Re: Texas Winter 2024-2025

#6538 Postby txtwister78 » Sun Jan 19, 2025 3:56 pm

Portastorm wrote:
txtwister78 wrote:One thing to note is some models are really trending this further south with time as colder/drier air surges in from the north and the low gets pushed further off the coast. 3km NAM not all that impressed for example with QPF. HRRR more bullish but QPF drops off significantly north of SA and 30-40 miles north of I-10 further east. Something to watch in future runs despite being 24 hours or so away from things beginning. Possible to see some nudges back north but it's been a trend south today with moisture.

https://images.weatherbell.com/model/nam-nest/tx/snow_24hr_kuchera/1737309600/1737489600-PXyFszhU8z0.png

https://images.weatherbell.com/model/hrrr/tx/total_precip_inch/1737309600/1737482400-5HN3RbLBOoc.png


Now that's NOT the kind of maps I want to see, txtwister78! Quite possible though. Have you looked at the other meso models to see how the trend compares?


WRF-NSSL was probably most bullish and further north with QPF/snow out of all meso models. ARW similar to NAM. RAP similar to HRRR. It's been a slow shift south however with most models with each run.
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Re: Texas Winter 2024-2025

#6539 Postby Stratton23 » Sun Jan 19, 2025 4:05 pm

RGEM 18z more aggressive and not really suppressed
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Re: Texas Winter 2024-2025

#6540 Postby txtwister78 » Sun Jan 19, 2025 4:07 pm

ICON

Image
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