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Scattered thunderstorms tonight and Tuesday

7 19 2021
KIFI WX 7 19 2021

Increased moisture from the south will up the thunderstorm risk. We'll look for daytime highs down slightly with the cloud cover and thunderstorm threat.

Overnight, a chance of showers and thunderstorms with gusty winds and lows into the 60's.

Tuesday, chance of showers and thunderstorms for the afternoon and evening. Highs into the upper 80's with gusty winds from the thunder clouds.

RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 11 PM MDT
TUESDAY FOR ISOLATED TO SCATTERED THUNDERSTORMS FOR FIRE WEATHER
ZONES 410, 422, 425, 475 AND 476…

The National Weather Service in Pocatello has issued a Red Flag
Warning for isolated to scattered thunderstorms, which is in
effect from noon today to 11 PM MDT Tuesday.

  • AFFECTED AREA…Fire Weather Zone 410 Upper Snake River
    Valley/Idaho Falls BLM, Fire Weather Zone 422 Sawtooth
    Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake
    River Valley/Twin Falls BLM north of the Snake River, Fire
    Weather Zone 475 East Salmon River Mountains/Salmon NF and
    Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF.
  • IMPACTS…Lightning and or strong outflow winds could create
    critical fire conditions.
  • THUNDERSTORMS…Today, a mix of wet and dry isolated
    thunderstorms with some rainfall over one tenth of an inch
    possible. Isolated thunderstorms are expected overnight and
    Tuesday morning, before becoming scattered in the afternoon with
    increasing potential of heavier rainfall tomorrow.
  • OUTFLOW WINDS…Winds over 35 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A red flag warning means that critical fire weather conditions
are either occurring now, or will shortly based on these criteria
for Southeastern Idaho:

  • Relative humidity at or below 15 percent and wind gusts of at
    least 25 mph in the mountains, or 30 mph in the Snake Plain.
  • Thunderstorm coverage of 25 percent, without specific rainfall
    criteria.
  • Other high impact events deemed critical by the National
    Weather Service and area fire management agencies.
Article Topic Follows: Local Forecast

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Michael Coats

Michael is Chief Meteorologist for Local News 8 and Eyewitness News 3.

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