Heavy Rainfall in South Texas; Pacific Storm Moves into the Pacific Northwest

Thunderstorms may bring heavy to excessive rainfall and the potential for flooding over South Texas late Wednesday through Friday. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued for portions of South Texas. A Pacific storm will begin to impact the Pacific Northwest Wednesday, bringing strong winds, heavy showers and the potential for severe thunderstorms. Read More >

Fire Weather Watch/Red Flag Warning Criteria

Specific conditions must be met for a Fire Weather Watch and/or a Red Flag Warning to be issued. These conditions are as follows:

1. KBDI greater that or equal to 600, and

2. Two minute ASOS winds greater than or equal to 17 kts (20 mph), or 20 foot winds greater than or equal to 14 kts (16 mph), and

3. Minimum relative humidity of less than 60% in one or more observations, and

4. Low 10-hr fuel moisture, typical less than 13.

5. Monthly precipitation less than two inches with a decrease and/or cessations of percolation (dew)can signal the onset of the fire season. Forecaster judgment must be used in the watch/warning decision making process.