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Area Forecast Discussion (AFD)

Issued by Huntsville, AL (HUN)

                            
000
FXUS64 KHUN 201932
AFDHUN

Area Forecast Discussion
National Weather Service Huntsville AL
232 PM CDT Fri Sep 20 2019

.NEAR TERM...(Tonight)
Issued at 225 PM CDT Fri Sep 20 2019

Temperatures have climbed into the upper 80s in the normal hot spots
such as the Huntsville International Airport and the Muscle Shoals
Regional Airport. Could see the Quad-cities area still reach 90 
degrees. A very dry airmass remains in place with dewpoints in the 
lower to mid 50s in most locations. Winds are primarily between 5 and
10 mph. However, there are a few gusts to between 15 and 20 mph 
still occurring. 

These winds should diminish this evening to around 5 mph. Sheltered
valley locations could be light and variable. Despite clear skies,
the airmass looks too dry even for some isolated fog development. 
Tweaked lows slightly lower into the mid 50s to around 60 degrees in
many locations. The exceptions should be where warmer highs were
reached this afternoon and near the AL/MS border, where lows could 
only drop into the lower 60s.

.SHORT TERM...(Saturday through Sunday)
Issued at 225 PM CDT Fri Sep 20 2019

Not much change in the forecast over the weekend, as high pressure
remains entrenched over Alabama and Georgia as a cold front 
approaches the area from the northwest. Slightly more moist air is 
slowly advected into the region ahead of it this weekend. Highs 
should be slightly higher reaching the upper 80s to lower 90s across 
northern Alabama and southern Tennessee. Lows should slowly climb 
into the upper 50s to mid 60s. 

.LONG TERM...(Sunday night through Thursday)
Issued at 225 PM CDT Fri Sep 20 2019

These trends will continue into Sunday night. There continues to be
uncertainty how much rainfall will occur as this front tries to push
south into northern Alabama on Monday. Fairly high relative humidity
values around 850 mb and weak lift should provide some mostly cloudy
conditions and should keep highs around 90 or 91 degrees. Then high
pressure builds back over the area behind the front Tuesday. 

There may be another very low chance of showers or thunderstorms on 
Wednesday if this front moves back to the northeast over the area. 
At this point, only including a 20 percent chance of showers and 
thunderstorms. Highs should remain in the lower 90s primarily through
Wednesday. However, models do suggest another mini-heat wave may 
develop during the end of the week as the upper ridge builds 
significantly over the area. For now guidance is only showing highs 
in the lower 90s. However, 925 mb temperatures hint we may be back in
the mid 90s Thursday and Friday of next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1214 AM CDT Fri Sep 20 2019

VFR conditions are expected throughout the TAF period. Southeast
winds around 10 knots with gusts to around 16 knots will become 
light this evening and overnight. No fog formation is expected.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

$$

NEAR TERM...KTW
SHORT TERM...KTW
LONG TERM...KTW
AVIATION...KTW


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