


Area Forecast Discussion
Issued by NWS Grand Junction, CO
Issued by NWS Grand Junction, CO
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094 FXUS65 KGJT 101752 AFDGJT Area Forecast Discussion National Weather Service Grand Junction CO 1152 AM MDT Thu Jul 10 2025 .KEY MESSAGES... - Showers and thunderstorms will continue drifting eastward as a weak disturbance moves through this morning. Afternoon convection will favor the Continental Divide. - Red Flag Warnings remain in place today as dry, hot, and windy conditions occur this afternoon. - Temperatures will remain 5-10 degrees above normal through mid next week. && .SHORT TERM /THROUGH FRIDAY/... Issued at 233 AM MDT Thu Jul 10 2025 The weak shortwave currently moving across the CWA is producing quite a bit of lightning this morning so if you thought you heard thunder last night, there`s a good chance you did. Currently, the I-70 corridor and the Uncompahgre Plateau are seeing the strongest convection which the CAMs have picked up on quite well. The current convection will continue to track eastward this morning. Once the wave pushes to the Front Range, a weak cold front will start dropping down from Wyoming and daytime heating and moisture should keep some convection going through the afternoon hours, mostly along the Continental Divide. Wouldn`t be surprised to see some development over the higher terrain north of the I-70 corridor as well. The main concern from storms will be some gusty outflow winds of 40 to possibly 50 mph...maybe some small hail as well. Deep mixing will allow some stronger winds aloft to mix to the surface, outside of convection, and with low humidities still in place, critical fire weather conditions are expected as described below. Friday, another weak wave will move across the CWA bringing another round of convection to the region. Most convection will be confined to the Continental Divide and like today, the main concern will be some gusty outflow winds. High temperatures will be several degrees cooler than yesterday with similar high temps expected on Friday. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... Issued at 233 AM MDT Thu Jul 10 2025 Things moisten up some throughout the weekend, though PWAT`s should stay below normal. Should we see any notable showers or thunderstorms on Saturday and Sunday, they`ll likely develop over the San Juans where the NBM has consistently shown a 40-60% probability of wetting rain. As of now, Sunday looks to be the more promising day of the two. High pressure extends back eastwards towards the Rockies early in the work week while another broad trough develops to our north. Ensembles are hinting that next week could receive a moderate boost in moisture, partially coming from the Pacific through the trough and partially from the Gulf through the shifting high pressure pattern. The exact details on this setup will vary depending on the exact location of low and high pressure centers across the CONUS, but trends are indicating a heightened chance for showers and thunderstorms across the region through portions of next week. Otherwise, valley high temperatures will stay 5-10 degrees above normal throughout the long-term period, though higher elevations may drop to near-normal. && .AVIATION /18Z TAFS THROUGH 18Z FRIDAY/... Issued at 1141 AM MDT Thu Jul 10 2025 A passing disturbance will bring increased afternoon wind gusts and isolated showers and thunderstorms to the region. Gusts of 20 to 30 mph are possible at TAF sites this afternoon. Stronger gusts may be possible near showers and thunderstorms. Most of the precipitation will be along the Continental Divide, although PROB30 has been included for KVEL due to showers developing nearby. VFR conditions are expected to prevail, and winds should become light overnight as the passing disturbance leaves our area. && .FIRE WEATHER... Issued at 521 AM MDT Thu Jul 10 2025 Wind gusts of 25-35 mph with RH in the teens and single digits will occur along and south of I-70 this afternoon. These conditions along with critical fuels will create critical fire weather conditions so the Red Flag Warnings remain in place today. Winds decrease on Friday through the weekend although temperatures stay above normal. The chance of wetting rain in the coming days is low. Lightning starts will be a concern with the warm and dry conditions given there is a chance for showers and storms each afternoon into next week. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...Red Flag Warning until 8 PM MDT this evening for COZ203-205- 207-290>294. UT...Red Flag Warning until 8 PM MDT this evening for UTZ487-490- 491. && $$ SHORT TERM...TGR LONG TERM...BW AVIATION...TGJT FIRE WEATHER...TGJT