In southeast Texas, the coastal Carolinas, and much of New Mexico today, showers and thunderstorms may bring excessive rainfall which could lead to areas of flooding. Dry, gusty winds will contribute to scattered areas of elevated to critical fire weather today in the western U.S. Wildfire smoke is causing unhealthy air quality today in parts of the Pacific Northwest and central Plains. 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 |