Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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204 FXUS64 KEWX 141721 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 1221 PM CDT Tue May 14 2024 ...New AVIATION... .SHORT TERM... (Today through Wednesday) Issued at 240 AM CDT Tue May 14 2024 An upper level trough is moving across TX this morning and the flow is becoming west-northwesterly. At the surface, high pressure is moving over the region and winds are light and variable. A cooler, drier airmass has moved over our CWA. Temperatures and dewpoints are five to 15 degrees cooler than 24 hours ago. Some patchy fog has developed over the Coastal Plains and I-35 Corridor. The patchy fog will spread across more of the area before sunrise and then burn off quickly. High pressure will move across our CWA today with quiet weather expected. Skies will be mostly sunny and temperatures will warm. Highs will range from the upper 90s over the Rio Grande Plains to the upper 80s over the eastern zones. Tonight winds will turn back to the south or southeast and increase in speed. Temperatures will be warmer again with lows about five degrees warmer than this morning. Southeasterly flow will continue Wednesday. High temperatures will be about the same as today. A dryline will move toward our northwestern area and may generate showers and thunderstorms near the Big Bend region. Some of these storms could move into Val Verde County Wednesday afternoon, but chances are low. && .LONG TERM... (Wednesday night through Monday) Issued at 240 AM CDT Tue May 14 2024 A trough will be located over the northern Baja Peninsula Wednesday night, expected to progress east towards the Plains through late week. An impulse ahead of this system will bring precipitation chances in the west as early as Wednesday night, although the better precipitation chances arrive on Thursday. The best chances for showers and thunderstorms this day resides over the eastern two thirds of the area. High PWATS from 1.5 to over 2 inches will bring the potential for heavy rain, especially over the far northeastern portion of the CWA. WPC highlights a level 2 of 4 risk for excessive rainfall for this area. Ample low level moisture and high CAPE values are expected by the afternoon. Any thunderstorms that develop will be capable of producing large to very large hail this day and a level 2 of 5 for severe weather has been introduced by SPC over portions of the Hill Country, I-35 corridor and Coastal Plains. Some precipitation may linger into Friday as the trough moves across the Central Plains into the middle Mississippi Valley, although chances are lesser this day. Dry weather, clear skies, and warm to hot temperatures are expected this weekend into early next week. Widespread highs in the 90s and or low triple digits are expected Sunday into next week. && .AVIATION... (18Z TAFS) Issued at 1218 PM CDT Tue May 14 2024 VFR flight conditions prevail through the period. Some high clouds return and increase overnight into Wednesday across the area. Winds will trend mainly light and variable at times from this afternoon into tonight. KDRT will be the exception with moderate speeds from the east-southeast. The winds turn and increase from out of the southeast to east-southeast for each TAF site entering Wednesday afternoon. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 66 91 69 83 / 0 0 10 70 Austin Bergstrom Intl Airport 63 91 68 83 / 0 0 10 70 New Braunfels Muni Airport 64 92 70 86 / 0 0 10 60 Burnet Muni Airport 65 89 68 80 / 0 0 10 70 Del Rio Intl Airport 71 99 76 98 / 0 10 20 10 Georgetown Muni Airport 64 89 67 80 / 0 0 10 80 Hondo Muni Airport 65 93 71 88 / 0 0 10 40 San Marcos Muni Airport 63 91 68 84 / 0 0 10 70 La Grange - Fayette Regional 63 90 69 84 / 0 0 10 70 San Antonio Intl Airport 66 92 71 86 / 0 0 10 50 Stinson Muni Airport 66 93 72 87 / 0 0 10 50 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...05 Long-Term...27 Aviation...Brady