A dangerously cold period will develop Friday morning, with an extended period of frigid temperatures through Saturday. Daytime temperatures will fall below 0 and bottom out below -20 in most locations. Breezy northwest winds will result in wind chill readings between -30 and -45 Friday afternoon into Saturday morning, which can cause frostbite to exposed skin within 10 minutes. Read More >
Choose Element: | Click here for element descriptions |
Sustained Wind Speed | Descriptive Term |
---|---|
40 mph or greater | Strong, dangerous, or damaging |
30-40 mph | Very Windy |
20-30 mph | Windy |
15-25 mph | Breezy, Brisk, or Blustery |
5-15 mph or 10-20 mph | None |
0-5 mph | Light or light and variable wind |
Category | Classification | Heat Index/Apparent Temperature (°F) | General Affect on People in High Risk Groups |
---|---|---|---|
IV | Extremely Hot | 130°F or Higher | Heat/Sunstroke HIGHLY LIKELY with continued exposure |
III | Very Hot | 105°F - 130°F | Sunstroke, heat cramps, or heat exhaustion LIKELY, and heatstroke POSSIBLE with prolonged exposure and/or physical activity |
II | Hot | 90°F - 105°F | Sunstroke, heat cramps, or heat exhaustion POSSIBLE with prolonged exposure and/or physical activity |
I | Very Warm | 80°F - 90°F | Fatigue POSSIBLE with prolonged exposure and/or physical activity |
Lifted Index (LI) | Thunderstorm Indication |
---|---|
< -5 | Very Unstable, Heavy/strong thunderstorm potential |
-3 to -5 | Unstable, Thunderstorms probable |
0 to -2 | Marginally Unstable, Thunderstorms possible |