Area Forecast Discussion
Issued by NWS
Issued by NWS
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
692 FXUS64 KLUB 091124 AFDLUB Area Forecast Discussion National Weather Service Lubbock TX 624 AM CDT Thu May 9 2024 ...New AVIATION... .SHORT TERM... (Today and tonight) Issued at 208 AM CDT Thu May 9 2024 Light northeast winds behind a weak and shallow cold front early this morning as a surface low moves into the Permian Basin. Low temperatures will remain similar to yesterday morning with temperatures in the mid 40s to 50s. The cold front will stall for a bit this afternoon across the far southwest South Plains and into the Permian Basin. Breezy east northeast surface winds today across the area with an increase in the pressure gradient directly behind the boundary. Temperatures are expected to be about 5 to 10 degrees cooler today in the mid 70s to lower 80s due to weak CAA and upslope flow. Meanwhile, the pattern aloft will begin to change today as the upper low that was spinning over the Northern Plains becomes absorbed into the base of a positively tilted trough across the Great Lakes with a cutoff low retrograding westward toward the Great Basin region. A weak and shallow secondary cold front will push south through the forecast area this afternoon, which will push the stationary (original) front southward towards the Texas/Mexico state line. Winds will remain out of the northeast and weaken this evening with low temperatures to be similar to this morning in the mid 40s to 50s. && .LONG TERM... (Friday through Wednesday) Issued at 208 AM CDT Thu May 9 2024 A weekend will start out with a rex block from the eastern Pacific into the western CONUS and slowly break down through the weekend in response to a trough moving into the Pacific Northwest. The trough from the rex block will slowly progress across the southwestern US this weekend providing increased precipitation chances through early next week. Models have come into better agreement in moving this upper trough onto the Plains late in the weekend. Therefore, forcing for ascent will be fairly weak on Saturday. Lift on Saturday will primarily be driven by moist isentropic ascent. There may be some minor short waves moving through the southwest flow aloft but are too minute for models to resolve at this time scale. Precipitation may therefore be on the light side on Saturday. Increased chances for precipitation will emerge on Sunday as the upper trough moves east of the four-corners. Improved large scale ascent will move overhead with the approach of this trough and will complement the lower level isentropic ascent. The warm air advection will bring unexceptional amounts of elevated instability overhead. Sunday may see improved instability but most likely less than sufficient for severe weather. Mostly cloudy and easterly flow will keep temperatures below seasonal averages through at least Sunday. Temperatures will then warm to more seasonal levels through mid- week. && .AVIATION... (12Z TAFS) Issued at 621 AM CDT Thu May 9 2024 Surface winds are expected to increase after sunrise following a cold front that passed through the region. Winds will decrease late this evening at all TAF sites. There is a low chance of low CIGS entering the terminals from the southeast early Friday morning but chances are too low to mention in the TAF at the moment. && .LUB WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...11 LONG TERM....01 AVIATION...01