Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
742 FNUS75 KTFX 301145 FWSTFX Spot Forecast for Two Calf RX...BLM National Weather Service Great Falls MT 545 AM MDT Thu May 30 2024 Forecast is based on ignition time of 0700 MDT on May 30. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... A disturbance in the moderate northwesterly flow aloft will bring gusty westerly surface winds by afternoon, along with a chance of light showers and possibly a thunderstorm. The main threat from these storms will be erratic wind gusts up to 45 mph. The probability for 0.10 inches or more of precipitation from the showers is 10 percent or less. Weak high pressure aloft will then start to move into the area tonight into Friday, for decreasing clouds and wind. Although temperatures today will be below seasonal averages, afternoon humidity will likely fall below 30 percent, and slight warming on Friday will likely lower afternoon humidity to near 20 percent. .REST OF TODAY... Sky/weather.........Mostly sunny (30-40 percent). Chance of showers in the afternoon with a slight chance of thunderstorms. CWR.................10 percent. LAL.................1 until 1200, then 2. Max temperature.....61-66. Min humidity........23-28 percent. Wind (20 ft)........ Slope/valley.......Breezy. West winds 20 to 25 mph. Gusts to 35 mph possible in the afternoon. Erratic wind gusts to 45 mph possible near thunderstorms in the afternoon. Mixing height.......11500 ft AGL. Transport winds.....West around 30 mph. Haines Index........6 or high potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly clear (20-30 percent). CWR.................0 percent. LAL.................1. Min temperature.....41-46. Max humidity........51-56 percent. Wind (20 ft)........ Slope/valley.......West winds 10 to 20 mph. Gusts to 30 mph in the evening. Mixing height.......500 ft AGL. Transport winds.....West around 20 mph. Haines Index........ .FRIDAY... Sky/weather.........Sunny (10-20 percent). CWR.................0 percent. LAL.................1. Max temperature.....65-70. Min humidity........18-23 percent. Wind (20 ft)........ Slope/valley.......West winds 10 to 15 mph. Gusts to 25 mph in the afternoon. Mixing height.......10000 ft AGL increasing to 11000 ft AGL late in the afternoon. Transport winds.....West around 20 mph. Haines Index........6 or high potential for large plume dominated fire growth. $$ Forecaster...Coulston Requested by...Jay Peterman Type of request...PRESCRIBED .TAG 2415143.2/TFX .DELDT 05/30/24 .FormatterVersion 2.0.0 .EMAIL jpeterman@blm.gov, tfx.ops@noaa.gov