12/02 – Brantly’s “Frosty Morning, Mild Afternoon” Wednesday Forecast
We should have one more good weather day today before things begin to change on Thursday. Mostly clear skies continue through this morning, but later in the day mid to high level clouds will likely be on the increase, moving in from the west. No rain is expected as the lower levels of the airmass remains very dry with low dewpoints. It still remains rather cool with temperatures remaining below normal. Highs are expected to primarily be in the mid/upper 50s today, with the exception of lower 60s at the beaches. Low afternoon relative humidity values in the mid to upper 20 percentile range will also occur. Warmer temperatures are expected across the region tonight due to greatly increased cloud cover over the region. Lows tonight are expected to range from the mid to upper 30s over inland areas to around 40s along and just south of the I-10 corridor. Along the beaches upper 40s and even some lower 50s expected.
On Thursday, the weather pattern begins to change as the mid/upper closed low over Oklahoma shifts slightly eastward, with a positively tilted trough extending to the southwest. Meanwhile, moisture will increase along with a southeast wind flow ahead of a low pressure system advancing from the western Gulf of Mexico eastward to the central Gulf. Rain will gradually develop and move into our area from the west as well. The bulk of the associated rain is expected to move east across our area Thursday afternoon into Friday night. Most of the precipitation on Thursday will be on the lighter side, with rainfall totals generally no more than about a quarter inch. It will be a little warmer on Thursday than the past few days, with highs ranging from the mid and upper 50s over interior northwest zones to the mid and upper 60s down toward the coastal counties.
Winds will shift southwesterly on Friday, and then northwesterly Friday night with the passage of the surface trough, followed by a light to moderate northwesterly flow through the weekend.