Area Forecast Discussion
Issued by NWS Dallas/Fort Worth, TX
Issued by NWS Dallas/Fort Worth, TX
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
070 FXUS64 KFWD 251746 AFDFWD Area Forecast Discussion National Weather Service Fort Worth TX 1246 PM CDT Tue Jun 25 2024 ...New Short Term, Aviation... .SHORT TERM... /NEW/ /Through Wednesday Night/ The continuation of this prolonged period of heat remains the primary weather concern through the short-term forecast period as strong mid-/upper ridging remains anchored over the Desert Southwest. Expect afternoon highs in the mid- to upper 90s this afternoon across much of the area, with a few locations across the Big Country and the DFW Metroplex peaking near/at 100 degrees. The spatial coverage of 100-degree temperatures may increase on Wednesday, especially across portions of North Texas as 24-26 degreeC 850mb temperatures sprawl overhead the region. A steady influx of moist, southerly low-level flow will keep humidity on the higher end and heat index values in the 102-108 range this afternoon and 105-110 range Wednesday afternoon. Warm overnight lows in the upper 70s to low 80s will also add onto the heat stress. There is some uncertainty with how convection during the midweek period unfolds across North Texas (discussed below) and how it impacts temperatures. Nonetheless, we have extended the Heat Advisory through Wednesday afternoon. Continue to take all of the necessary precautions to ensure you, your loved ones, and your pets stay safe in the heat! North-northwesterly flow aloft on the eastern periphery of the aforementioned ridge will increase the potential for a couple thunderstorm complexes to move out of the Plains and toward North Texas during the midweek period. Convective initiation is expected to take place later this afternoon/evening across portions of southern Iowa/northern Missouri/southeastern Nebraska in the vicinity of a cold front extending out of surface low pressure centered over southeastern Ontario. Rapid upscale growth into a south-southeastward propagating MCS is expected during the overnight hours. High-resolution guidance has continued to downtrend in the thunderstorm potential for our forecast area during the overnight hours. It is looking more likely that this MCS or remnants of the complex will approach our northeastern zones later Wednesday morning into early Wednesday afternoon. Additional thunderstorms may develop along this system`s outflow or in the vicinity of the cold front across Central Oklahoma late Wednesday afternoon into Wednesday evening. Northerly mean flow and 15-20 kt 850mb winds would support south-southwesterly propagating clusters/complexes of thunderstorms into North Texas late Wednesday. However, with a loss of daytime heating Wednesday evening and these systems being so tied to mesoscale processes, it is uncertain how far these storms will maintain into our forecast area. Nonetheless, the environment will support strong wind gusts and isolated small hail, so make sure to keep updated with the forecast over the next couple of days. Langfeld && .LONG TERM... /Issued 320 AM CDT Tue Jun 25 2024/ /Wednesday Night through Monday/ In a nutshell, it will remain hot and humid from mid-week through early next week. If isolated storms do manage to develop Wednesday afternoon near any outflow boundaries, they should dissipate quickly Wednesday night with the loss of surface heating. The mid-level ridge axis will shift eastward at the end of the week, remaining centered around the ArkLaTex region through early next week. Subsidence under the ridge will yield plenty of sun and eliminate any appreciable chances for precipitation. Temperatures Thursday through Monday will not vary much day to day with highs mainly in the upper 90s to around 100 and lows from the mid 70s to around 80. Southerly low level flow will also supply a constant feed of Gulf moisture, keeping humidity and afternoon heat index values high. The current Heat Advisory will more than likely continue for most if not all of the forecast area this weekend through early next week. The good news is that it looks like we will stay below Excessive Heat Warning criteria. 79 && .AVIATION... /NEW/ /18Z TAFs/ VFR conditions with SCT to BKN 035-050 cigs will persist through the remainder of this afternoon and into this evening. Persistent moist, southerly low-level flow will likely bring about another period of MVFR cigs to KACT and the D10 terminals Wednesday morning. Southerly surface winds generally between 10-20 kts will continue through the TAF period. Looking just beyond this TAF period, low chances for thunderstorms will exist near the DFW Metroplex late Wednesday afternoon into Wednesday evening. A VCTS inclusion will be decided in later TAF updates. Langfeld && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 99 81 99 81 100 / 0 5 10 10 0 Waco 96 79 96 78 99 / 5 5 5 5 0 Paris 98 78 97 75 96 / 10 10 20 20 0 Denton 99 81 101 78 100 / 5 5 10 20 0 McKinney 98 80 99 78 99 / 0 10 10 20 0 Dallas 98 81 99 80 101 / 0 5 10 20 0 Terrell 97 78 96 77 97 / 0 5 10 20 0 Corsicana 97 80 97 80 99 / 0 5 10 10 0 Temple 96 78 97 76 99 / 5 5 5 5 0 Mineral Wells 98 80 100 77 101 / 0 5 5 5 0 && .FWD WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 7 PM CDT Wednesday for TXZ091>095-100>107- 115>123-129>135-141>148-156>162-174-175. && $$