864 FXUS63 KGID 261922 AFDGID Area Forecast Discussion National Weather Service Hastings NE 222 PM CDT Sat Jul 26 2025 .KEY MESSAGES... - Weakening thunderstorms approach the area from the west this evening. Most areas remain dry. - Dangerous heat Sunday and Monday. - A bit less warm on Tuesday, then significantly cooler for the middle to end of next week. - A more active pattern returns for the middle to end of next week, bringing daily thunderstorm chances to the area. && .DISCUSSION... Issued at 147 PM CDT Sat Jul 26 2025 Thunderstorms are just beginning to develop over CO, WY, and the Neb panhandle. This scattered activity will approach the area late this evening (9pm-12am), but is expected to be on a weakening trend as it does so. If these storms can persist long enough, areas west of Highway 283 could see a brief thunderstorm and perhaps some gusty winds as they dissipate. For Sunday and Monday, the main story is the heat as upper level ridging builds over the central CONUS. Widespread temperatures in the 90s and low 100s will combine with dewpoints in the 60s/70s to result in widespread heat index values in the 100-110 range...and possibly as high as 115 in eastern areas that maintain higher dewpoints on Monday. As such, a Heat Advisory and Extreme Heat Warning are now in effect for Sunday and Monday. The ridge begins to break down on Tuesday, although high temperatures are still expected to reach the 90s for most of the area. Heat index values could even approach advisory criteria (105) in some localized areas. Tuesday night, the arrival of a shortwave brings a good chance (40-70%) for thunderstorms to the area, and this fairly active pattern will persist through much of next week. Overall, convective details remain quite uncertain at this range, but the best threats for severe weather would be Tuesday and Wednesday. Beyond that, significantly cooler air will lead to limited instability. In fact, HIGH temperatures on Friday (Aug 1) are forecast to only be in the low to mid 70s...which is similar to our forecast LOW temperatures for tonight! && .AVIATION /18Z TAFS THROUGH 18Z SUNDAY/... Issued at 1147 AM CDT Sat Jul 26 2025 For KGRI/KEAR Airports: VFR conditions are expected through the period, with only a low (10-20%) chance for MVFR fog Sunday morning. Winds remain out of the south-southeast through tonight, becoming more southerly and increasing on Sunday. && .GID WATCHES/WARNINGS/ADVISORIES... NE...Heat Advisory from noon Sunday to 8 PM CDT Monday for NEZ060- 072>074-082>085. Extreme Heat Warning from noon Sunday to 8 PM CDT Monday for NEZ039>041-046>049-062>064. Heat Advisory from noon Sunday to noon CDT Monday for NEZ061- 075>077-086-087. Extreme Heat Warning from noon to 8 PM CDT Monday for NEZ061- 075>077-086-087. KS...Heat Advisory from noon Sunday to 8 PM CDT Monday for KSZ005>007-017>019. && $$ DISCUSSION...Mangels AVIATION...Mangels