Area Forecast Discussion
Issued by NWS Shreveport, LA
Issued by NWS Shreveport, LA
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653 FXUS64 KSHV 040024 AFDSHV Area Forecast Discussion National Weather Service Shreveport LA 724 PM CDT Wed Jul 3 2024 ...New AVIATION... .UPDATE... Issued at 602 PM CDT Wed Jul 3 2024 We have lifted northward, the slight chance for showers and thunderstorms, up across the northern parishes, into our E TX counties up to I-20 and Union in S AR. The current sea breeze still has wheels up I-49 toward the Shreveport Bossier metro area. Update to zones available. /24/ && .SHORT TERM... (This evening through Thursday Night) Issued at 301 PM CDT Wed Jul 3 2024 In short, Independence Day continues to look very hot for the ArkLaTex, with perhaps the most apt descriptor of our outdoor conditions being a "sauna-oven." Over the next day or so, the area of high pressure aloft will finally start to flatten out as an upper level low over the Midwest begins to deepen. However, before the heat finally breaks, we have another afternoon of hot temperatures to deal with, as the ridge continues its influence on this streak of above average temperatures through the short term forecast period. Tonight`s low temperatures look to once again drop into the upper 70s to lower 80s, with stubborn surface level moisture yielding very little if at all by daybreak. As the upper level ridge continues to hold sway, tomorrow looks to be the warmest day of the week, as temperatures soar back into the upper 90s, with a few sites possibly hitting the century mark again. As with this afternoon, stubborn humidity will continue, resulting in heat index values between 105 to 115 through the early evening, before temperatures back into the upper 70-s to lower 80s by daybreak Thursday. Given that tomorrow is the 4th of July, and in light of all the outdoor festivities being enjoyed for the holiday, precautions are advised to prevent heat-related illnesses, including but not limited to wearing loose-fitting, light-colored clothing, wearing hats and making use of sunscreen, drinking plenty of water, and above all, limiting outdoor exposure as much as possible, with frequent breaks in shaded or air-conditioned spaces. Meanwhile, the much-anticipated fireworks forecast is shaping up to be mostly favorable, with a slight chance of sea breeze type convection across portions of deep east Texas, extending into central Louisiana and southern Arkansas, which may put a damper on mid-afternoon events but should largely come to an end before dark Thursday evening, allowing fireworks shows to hopefully continue as planned. However, the smoke from the last of the fireworks may barely have had time to settle before rainfall chances resume. Influenced by the aforementioned upper level trough and attendant surface boundary, storms look poised to enter the ArkLaTex from the northwest overnight Thursday into Friday morning, becoming more widespread into the daytime hours. At this time, the overnight storm activity does not look to become severe, but the development of the latest forecasts will be closely monitored. By daybreak Friday, temperatures will once again fall into the middle 70s to lower 80s. /26/ && .LONG TERM... (Friday through next Tuesday) Issued at 301 PM CDT Wed Jul 3 2024 Thursday night`s storms will only become more widespread Friday morning, moving to cover the entire region into the afternoon hours. At this time, the entire ArkLaTex is highlighted in the general thunder area by the SPC, and careful attention will be given over the next few days to any potential for more organized stronger storms. This will mark the beginning of a more prolonged unsettled pattern for the ArkLaTex, as the upper level ridge which has been locking in our heat all this week finally begins to shift off to the south and east enough to allow the upper level trough digging south over the Plains to swing its associated surface boundary into the region, looking to become stalled here throughout the extended forecast period. This new pattern will be characterized by more seasonable temperatures with highs in the lower 90s and lows in the lower 70s, owing primarily to near daily rainfall chances as several waves of storms keep conditions damp through the weekend and into early next week. Meanwhile, the model guidance consensus continues to track Hurricane Beryl on its westerly course, potentially bringing impacts to southern Texas. While impacts to the ArkLaTex do not likely as of this writing, we will of course be monitoring the latest forecast updates attentively. /26/ && .AVIATION... (00Z TAFS) Issued at 704 PM CDT Wed Jul 3 2024 For the 04/00Z TAF period, outflow driven convection has pushed as far north as the I-20 corridor early this evening with brief impacts at SHV in the form of heavy downpours and gusty winds. This isolated convection will diminish with the setting sun in the next few hours with limited convective debris clouds lingering overnight. However, VFR conditions are expected to prevail although patchy low stratus may become scattered closer to daybreak along and south of I-20. Otherwise, look for a similar trend of expanding cu field Thursday with S/SW winds averaging between 5-10 kts. /19/ && .PRELIMINARY POINT TEMPS/POPS... SHV 82 100 81 98 / 20 10 10 40 MLU 79 97 79 95 / 20 20 10 60 DEQ 76 97 74 91 / 10 10 30 40 TXK 80 99 78 96 / 10 10 20 40 ELD 77 97 75 94 / 20 20 20 60 TYR 80 99 78 96 / 0 0 10 30 GGG 79 98 78 96 / 20 10 10 40 LFK 77 97 77 97 / 20 10 0 30 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...Excessive Heat Warning until 8 PM CDT Thursday for ARZ050-051- 059>061-070>073. LA...Excessive Heat Warning until 8 PM CDT Thursday for LAZ001>006- 010>014-017>022. OK...Heat Advisory until 8 PM CDT Thursday for OKZ077. TX...Excessive Heat Warning until 8 PM CDT Thursday for TXZ097-112- 126-138-150>153-165>167. Heat Advisory until 8 PM CDT Thursday for TXZ096-108>111-124-125- 136-137-149. && $$ SHORT TERM...24 LONG TERM....26 AVIATION...19