開始于: 2026-03-20, 12:09
到: 2026-03-21, 03:15

...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY FOR MUCH OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA...

.Well above average temperatures through Saturday with a very dry airmass in place and breezy winds will support critical fire weather conditions. The lowest RH and breeziest winds are expected along and south of I90, especially on the Plains. Poor RH recovery tonight many areas with even warmer conditions Saturday. The red flag warning has been extended through Saturday south of I90, with the addition of south central SD for Saturday. A cold front will move through Saturday evening with breezy northerly winds expected and rising RH.

The National Weather Service in Rapid City has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from noon to 10 PM CDT Saturday.

* AFFECTED AREA...Fire Weather Zones 334 Mellette and Todd Counties and 335 Tripp County.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 9 percent.

* IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions.