Area Forecast Discussion
Issued by NWS Tucson, AZ

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FXUS65 KTWC 192111
AFDTWC

Area Forecast Discussion
National Weather Service Tucson AZ
211 PM MST Mon Apr 19 2021

.SYNOPSIS...Dry conditions this week with a return to above normal
temperatures Tuesday and Wednesday with some increase in afternoon
winds by Wednesday and Thursday. Slightly cooler temperatures are
expected for the end of the work week before heating up next weekend.

&&

.DISCUSSION...The area will be in between weather systems tomorrow
before the next one passes through the region on Wednesday. This
will be a dry weather system, so just looking at strong and gusty
winds developing across the state. These projected wind speeds
combined with very low humidity values and a high to very high
danger rating had prompted the issuance of the Fire Weather Watch of
mainly Wednesday afternoon and early evening. A weaker secondary
system will bring another round of breezy to windy conditions on
Thursday. These wind speeds could result in some areas of blowing
dust, especially in dust prone locations both Wednesday and
Thursday. Otherwise, both systems will result in slightly cooler
daytime temperatures Thursday and Friday after a brief warm up
compared to today on Tuesday and Wednesday.

&&

.AVIATION...Valid through 21/00Z.
Expect FEW cumulus clouds 10k-15k MSL this afternoon mainly hugging
the mountains , then SKC for the rest of the period. SFC winds
westerly to northwesterly 8-12 kts this afternoon becoming variable
less than 8 kts after 20/03Z. Tuesday afternoon winds pick up again
out of the west/southwest at 8-12 kts. Aviation discussion not
updated for TAF amendments.

&&

.FIRE WEATHER...Expect dry conditions this week with just a slight
chance of showers in the White Mountains Friday. Winds Wednesday and
Thursday are expected to be strong and gusty with speeds 15-25 mph
area wide. Speeds Wednesday will be on the higher end of that range.
Because of the winds, low RH values, and high fire danger a Fire
Weather Watch has been issued Wednesday from central Pima County
eastward starting late morning into the early evening. Thursday will
see elevated fire weather conditions with isolated critical fire
weather conditions possible for areas south and east of Tucson.
Otherwise expect normal afternoon breeziness with minimum RH values
ranging from 5-15 percent.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...None.

&&

$$

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