National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Caribou, ME

Weather Forecast Office

Baxter State Park and Katahdin Woods and Waters Forecast Graphics

Weather.gov > Caribou, ME > Baxter State Park and Katahdin Woods and Waters Forecast Graphics

Other Domains: Acadia N.P. | Marine/Coast | Northern/Eastern Maine

High Temperature
Minimum Wind Chill
Maximum Wet Bulb Globe Temperature
Wind
Sky
Precipitation Chance
Lightning

Wet Bulb Globe Temperature (WBGT) is a measure of the heat stress in direct sunlight, which takes into account: temperature, humidity, wind speed, sun angle and cloud cover (solar radiation). This differs from the heat index, which takes into consideration temperature and humidity and is calculated for shady areas. For more background info on WBGT, click here.


 

 
  • 101% means summit in and out of clouds
  • 102% means summit obscured
 

 

 

 

 
Lightning Threat represents thunderstorm coverage at any one time in the forecast period.

 

 

 

Lightning Legend         Lightning Safety Tips
 
Risk Level
Definition
None
No lightning risk
Limited
Thunderstorms expected to be isolated in coverage. 
Atmospheric conditions support cloud to ground lightning strikes in and near thunderstorms.
Be aware for thunderstorms in your area.
Elevated
Thunderstorms expected to be scattered in coverage.
  Atmospheric conditions support cloud to ground lightning strikes in and near thunderstorms.
Be prepared to take immediate shelter from thunderstorms and lightning.
Significant
Numerous thunderstorms are expected.
  Atmospheric conditions support cloud to ground lightning strikes in and near thunderstorms.
Plan to take immediate shelter from thunderstorms and lightning.
Extreme
Widespread thunderstorms are expected.
  Atmospheric conditions support cloud to ground lightning strikes in and near thunderstorms.
Plan to take immediate shelter from thunderstorms and lightning.

 

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