Area Forecast Discussion
Issued by NWS Tucson, AZ

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

000
FXUS65 KTWC 090938
AFDTWC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
235 AM MST WED APR 9 2014

.SYNOPSIS...STRONG HIGH PRESSURE ALOFT WILL RESULT IN MUCH WARMER
AFTERNOON HIGHS AGAIN TODAY. DRY CONDITIONS WILL CONTINUE DURING THE
LATTER PART OF THE WEEK. COOLER TEMPERATURES EXPECTED BY THE WEEKEND.

&&

.DISCUSSION...A RIDGE OF HIGH PRESSURE ALOFT WILL BRING ANOTHER WARM
DAY TO SOUTHEAST ARIZONA TODAY. THEREAFTER...MODELS SHOWED THIS
RIDGE BREAKING DOWN AS A LOW PRESSURE SYSTEM APPROACHES THE SOUTHERN
CALIFORNIA COAST BY LATE FRIDAY. THIS WILL LEAD TO SLIGHTLY COOLER
TEMPERATURES ON FRIDAY WITH SUBSEQUENTLY COOLER READINGS THIS
WEEKEND AS THE SYSTEM TRACKS THROUGH ARIZONA. LATEST MODELS SHOWED
SOME MOISTURE BEING PULLED INTO ARIZONA AS THE SYSTEM MOVES THROUGH
THE STATE ON SATURDAY. THE BEST CHANCE FOR SHOWERS WILL BE ACROSS
NORTHERN ARIZONA INTO THE WHITE MOUNTAINS. OTHERWISE...JUST
EXPECTING AN INCREASE IN CLOUDS AND SOME WIND FRIDAY AND SATURDAY.
THIS SYSTEM WILL BE FOLLOWED BY ANOTHER RIDGE OF HIGH PRESSURE THAT
WILL RESULT IN DAYTIME TEMPERATURES REBOUNDING EARLY NEXT WEEK.

&&

.AVIATION...VFR. HIGH CLOUDS HAVE BEGUN TO ROUND THE RIDGE OVER BAJA
AND SLIDE INTO THE FORECAST AREA. THIS TREND WILL CONTINUE
THROUGHOUT THE PERIOD. SURFACE WINDS ARE EXPECTED TO GENERALLY
REMAIN LIGHT AND DIURNALLY DRIVEN. AVIATION DISCUSSION NOT UPDATED
FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...DRY CONDITIONS WILL PREVAIL INTO THIS WEEKEND. A
STRONG WARMING TREND WILL OCCUR THROUGH TODAY...WHEN HIGH
TEMPERATURES WILL AVERAGE NEARLY 10 TO 15 DEGREES ABOVE NORMAL.
COOLER DAYTIME TEMPERATURES WILL THEN OCCUR BY THIS WEEKEND. DAYTIME
MINIMUM RELATIVE HUMIDITIES THROUGH FRIDAY WILL BE IN THE SINGLE
DIGITS TO LOWER TEENS WITH FAIR TO POOR NIGHTTIME RECOVERY. DAYTIME
MINIMUM RELATIVE HUMIDITIES THIS WEEKEND WILL BE IN THE TEENS AT
LOWER ELEVATIONS TO THE 20S ACROSS THE MOUNTAINS. EXPECT NORMAL
DIURNAL WIND TRENDS DURING MUCH OF THIS WEEK...WITH OCCASIONAL GUSTS
DURING THE AFTERNOON AND EARLY EVENING HOURS DUE TO STRONG DAYTIME
HEATING. A WEAK LOW PRESSURE SYSTEM WILL MOVE EASTWARD ACROSS THE
AREA THIS WEEKEND. ANY MEASURABLE RAINFALL WITH THIS SYSTEM SHOULD
REMAIN ACROSS NORTHERN ARIZONA. SOME GUSTY WINDS MAY OCCUR WITH THIS
SYSTEM.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON








USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.