9/29 – Brittany’s “Friday-Eve” Thursday Night Forecast
The pleasant, calm, and chilly conditions continue this evening.
It has been breezy and dry with the min RH dropping from near 40% to as low as 25%. Lowest RH and strongest winds have been across coastal MS and that fit with the Red Flag Warning. Ian moved back offshore into the Atlantic and is expected to continue to slow down and turn more due north with a 2nd landfall forecast by NHC along the SC coast sometime during the day tomorrow. While west of Ian the sky couldn`t be clearer. A very broad area of high pressure at the sfc is in control from the Great Lakes south-southwest into eastern Mexico. The combination of that sfc high and Ian is continuing to lead to the gusty northeast winds over the region but as Ian pulls north into SC and NC the sfc high will weaken and slide north in response. That will lead to the pressure gradient relaxing and that should help to relieve some of the fire weather concerns as winds lighten over the land areas. Temperatures should be a touch warmer tomorrow and with dewpoints expected to remain relatively unchanged min RH values could be just a tad lower but given the lower winds tomorrow dangerous fire weather conditions should remain in check. Again it will still be rather dry and with no rain recently the fuel is there for fires to quickly develop and spread, so if any burning is done do so with extreme caution.