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Active official alertUpdated

Extreme Heat Warning for Cascade County below 5000ft; Judith Basin County and Judith Gap; Madison River Valley +1 more

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What you need to know

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Likely

What is happening

What: Dangerously hot conditions. High temperatures between 100 and 105 degrees expected. Impacts: Heat related illnesses increase significantly during extreme heat. Where: Cascade County below 5000ft, Judith Basin County and Judith Gap, Gallatin Valley, and Madison River Valley. When: Until 3 AM MDT Sunday.

What the bulletin says to do

Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. If you must spend time outdoors, wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Full official description

Bulletin details

* WHAT...Dangerously hot conditions. High temperatures between 100 and 105 degrees expected. * WHERE...Cascade County below 5000ft, Judith Basin County and Judith Gap, Gallatin Valley, and Madison River Valley. * WHEN...Until 3 AM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

9 captured
  1. Update

    Extreme Heat Warning issued August 1 at 2:32PM MDT until August 2 at 12:00PM MDT by NWS Great Falls MT

    Official revision
  2. Update

    Extreme Heat Warning issued August 1 at 2:32PM MDT until August 2 at 3:00AM MDT by NWS Great Falls MT

    Official revision
  3. Update

    Extreme Heat Warning issued August 1 at 9:00AM MDT until August 2 at 3:00AM MDT by NWS Great Falls MT

    Official revision
  4. Update

    Extreme Heat Warning issued August 1 at 9:00AM MDT until August 2 at 12:00PM MDT by NWS Great Falls MT

    Official revision
  5. Update

    Extreme Heat Warning issued August 1 at 12:03AM MDT until August 2 at 3:00AM MDT by NWS Great Falls MT

    Official revision
  6. Update

    Extreme Heat Warning issued August 1 at 12:03AM MDT until August 2 at 12:00PM MDT by NWS Great Falls MT

    Official revision
  7. Alert

    Extreme Heat Warning issued July 31 at 12:06PM MDT until August 2 at 3:00AM MDT by NWS Great Falls MT

    Official revision
  8. Alert

    Extreme Heat Warning issued July 31 at 12:06PM MDT until August 2 at 3:00AM MDT by NWS Great Falls MT

    Official revision
  9. Alert

    Extreme Heat Warning issued July 31 at 12:06PM MDT until August 2 at 12:00PM MDT by NWS Great Falls MT

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Great Falls MT. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Update
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Methodology and corrections