Texas winter wx thread (2009-2010)

[Ntxw]

[katheria]

^^^soooooo jealous!

pics a comming

[cwp419]

I believe this is a much more high impact event for North Texas than usual considering how cold ground temperatures have been. The winter storms North Texas usually receive are preceded by fairly warm weather. The combination of cold ground temps and high precip rates, roads should become snow packed fairly quickly. And for the NWS to believe the roads will only stay slushy makes no sense.

Maybe...but 37F temp over 23F dewpoint right now wetbulbs to about 32-33F...with sun angle, there shouldn't be problems on the roads, maybe bridges. Going to be grassy surfaces, roofs and bridges tomorrow in Dallas. I would expect 3-4" maybe 5" in spots...I think most of the moisture will be south of Dallas...

The sun angle argument is rubbish, for the most part. Thick cloud cover and precip. will nullify any difference between the sun angle in early Jan and early Feb. As for the difference, the sun angle during the highest part of the day is only 43 degrees at 32N on Feb. 10th versus 36 1/2 degrees on January 10th. Those numbers are for when the sun is at its absolute peak during the day. The difference in solar radiation intensity at the time of maximum sun angle between the two dates is only about 15%. I've seen snow-packed roads in Central Texas in April and in North Texas in March

[txagwxman]

ECMWF 216 hours (8-9 days)---snow again.

[HockeyTx82]

New graphic with higher amounts....

http://www.srh.noaa.gov/images/fxc/fwd/ ... _full4.gif

[gboudx]

Here's a short vid I shot at work with my lightweight digital camera. And some pics.

http://img33.imageshack.us/img33/8038/file20847.mp4

http://img3.imageshack.us/img3/3540/img1180um.jpg

http://img641.imageshack.us/img641/4936/img1179.jpg

http://img684.imageshack.us/img684/3460/img1181j.jpg

[katheria]

[txagwxman]

[quote]

The sun angle argument is rubbish, for the most part. Thick cloud cover and precip. will nullify any difference between the sun angle in early Jan and early Feb. As for the difference, the sun angle during the highest part of the day is only 43 degrees at 32N on Feb. 10th versus 36 1/2 degrees on January 10th. Those numbers are for when the sun is at its absolute peak during the day. The difference in solar radiation intensity at the time of maximum sun angle between the two dates is only about 15%. I've seen snow-packed roads in Central Texas in April and in North Texas in March


Sun angle rubbish---whatever...Sun is 10-15% stronger now vs late Dec. That is enough.
If it was 28-30F and snowing it would be a much different picture across the cement.

Most of the cement pictures I have seen show SLUSH. But I am not in Dallas so I can't see.

[gboudx]

Most of the cement pictures I have seen show SLUSH. But I am not in Dallas so I can't see.

Either slush, or just wet with water. When the snow slacked up earlier, most of the slush on the roads I drove on melted.

[Texas Snowman]

ECMWF 216 hours (8-9 days)---snow again.

Well, that would be in line with what your compadre Wxman57 said earlier today that winter was far from done in Texas.

In fact, cross polar flow dipping as far south as the Gulf Coast might lead to the potential for record late February cold couldn't it?

This has certainly been a memorable winter...so far...

[cwp419]

The sun angle argument is rubbish, for the most part. Thick cloud cover and precip. will nullify any difference between the sun angle in early Jan and early Feb. As for the difference, the sun angle during the highest part of the day is only 43 degrees at 32N on Feb. 10th versus 36 1/2 degrees on January 10th. Those numbers are for when the sun is at its absolute peak during the day. The difference in solar radiation intensity at the time of maximum sun angle between the two dates is only about 15%. I've seen snow-packed roads in Central Texas in April and in North Texas in March


Sun angle rubbish---whatever...Sun is 10-15% stronger now vs late Dec. That is enough.
If it was 28-30F and snowing it would be a much different picture across the cement.

Most of the cement pictures I have seen show SLUSH. But I am not in Dallas so I can't see.

The effect of the angle of the rays striking the snow is different than the the ambient temperature.

[HockeyTx82]

ECMWF 216 hours (8-9 days)---snow again.

Is that the model that sniffed out this storm a few days back? If so do you think we have another shot as this stuff?

[txagwxman]

Most of the cement pictures I have seen show SLUSH. But I am not in Dallas so I can't see.

Either slush, or just wet with water. When the snow slacked up earlier, most of the slush on the roads I drove on melted.

Yes, just like I thought it would be. Tonight it will refreeze on the overpasses

Austin isn't going to see anything...

[Ntxw]

That is twice this winter we have had snow with a south\southeast wind. The one time we had a north wind, blizzard conditions.

The last band brought my total up to almost 7 on a flat surface.

[gboudx]

I've never seen whiteout conditions, but looking out the window, visibility is less than 0.25 mile right now. Awesome.

[brewskymc]

PLEASE POST PICS OF SAID SNOWSTORM!!! I'm dying a slow death down here in the rain. stupid weather.

Don't lose hope yet... Looks like the rain/snow line is getting closer to you guys. You may still get a taste before it's all over with.

[Texas Snowman]

I've never seen whiteout conditions, but looking out the window, visibility is less than 0.25 mile right now. Awesome.

I have in Colorado skiing a few times...pretty disorienting and I'd rather not see it on the roads here!

It's cranking here in Sherman/Denison with about 3-4" on the ground. Roads are beginning to get slush/snow-packed...

[katheria]

more pics later

[Tireman4]

ECMWF 216 hours (8-9 days)---snow again.

Houston Metro? How has the GFS and the ECMWF done on these latest snows? ( December 4, December 24-25 and now). Are they really starting to get it right?

[TeamPlayersBlue]

I'm just outside Tyler headed to Dallas....I 20 conditions? Haven't even seen frz mark yet