Ntxw wrote:We need some meteograms for the 12z GfS
Here you go. GFS has dropped the forecast of freezing temps across NE & SE TX for this weekend in favor of lows in the 40s to near 50. However, that Arctic front around the middle of next week looks rather potent. Good thing that the core of Arctic air isn't coming straight down the Plains. Note the forecast of teens down to the FL Panhandle next Thursday and a freeze down to Ft. Myers. Tampa will likely be colder than Dallas with this front. We're getting a small piece of the Arctic air in Texas. Not enough for any significant winter weather, most likely.
The long-range GFS still keeps that low in the Gulf of Alaska through 384hrs. The pattern isn't yet there that would drive these Arctic fronts straight south to Texas. It's quite possible that could change over the next 2-4 weeks, of course.
Just looked at the 12Z Euro - it's warmer (less cold) than the 12Z GFS for next week. Light freeze to Dallas on Wednesday then mid 30s for a low on Thursday there. It has snow in east-central OK eastward through central Arkansas next Monday night/Tuesday and again next Thursday night. Nothing anywhere near the D-FW area. Close but no cigar once again. I'd tend to buy the Euro's temperatures more than the GFS' for next week.
And, just saw the 12Z Canadian. It's vastly different from both the GFS & Euro, taking more cold air south down the Plains a day or two earlier than the GFS or Euro. Temps below freezing up in Dallas next Tuesday & very cold next Wed. Freeze down to the TX/LA coasts Thursday morning. I think it's not handling the fast-moving upper flow well and is probably wrong. At least I hope so...
DFW - a little cool rain on Tuesday morning followed by a freeze on Wed & Thu mornings:

Houston - light freeze maybe next Thursday? We'll see...

Arctic air centered over the Ohio Valley next Wednesday:

SE U.S. Temperatures next Thursday from the 12Z GFS:

Cold air building in Canada by 384hrs.

However, my friend, the big low in the Gulf of Alaska remains there at 384hrs, likely shunting the cold air in Canada southeastward rather than south down the Plains:
