Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:22AM||Sunset 5:48PM||Tuesday January 21, 2020 6:35 AM MST (13:35 UTC)||Moonrise 4:41AM||Moonset 3:05PM||Illumination 14%|
7 Day Forecast for Marine Location Near Tucson Estates CDP, AZHourly EDIT Help
Area Discussion for - Tucson, AZ  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KTWC 211041 AFDTWC
Area Forecast Discussion National Weather Service Tucson AZ 341 AM MST Tue Jan 21 2020
SYNOPSIS. Cooler today with isolated to scattered showers persisting into Wednesday as a storm system moves across the area. Dry conditions return Thursday as temperatures warm back up to seasonable levels and continue through the upcoming weekend.
DISCUSSION. Satellite imagery indicated overcast conditions across the state the morning, with surface observations reporting temperatures and dewpoints around 5 to 10 degrees warmer than 24 hours ago. This was due to an influx of moisture into the region ahead of an upper trough which was beginning to generate a few showers across the area. Satellite PWAT estimates valid 21/09Z near the AZ/NM border were approximately 0.6", with values increasing toward the west and approaching 0.9" near Ajo.
Expect shower activity to continue to increase across the region as this morning as the upper trough moves through. Various hi-res CAM solutions along with the GFS/ECMWF solutions agree that the trough axis and bulk of precipitation should push through the Tucson area late this morning. We could also see patchy fog develop in some areas due to rather low dewpoint depressions associated with areas of precip. We'll look for some quick clearing behind the main area of precip this afternoon, but lingering showers may continue into this evening, particularly across the higher elevations east of Tucson. Another quick-hitting shortwave is progged to move through late tonight into Wednesday morning. Instability associated with this wave may then work on the existing atmospheric moisture to generate a few rain and snow showers mainly across the higher elevations north and east of Tucson through Wednesday morning. Any rain and/or snow showers should end area-wide Wednesday afternoon.
Storm total QPF amounts (through Wednesday morning) should be fairly light, generally less than 0.15" in valley locations with locally higher amounts up to 0.50" in the mountains. Snow levels as of 21/10z are still above the mountain tops, but are expected to decrease throughout the day today, and especially tonight into early Wednesday. In general, expect storm total snowfall accumulations in the 1"-4" range above 8000 ft, with the highest totals across Mt. Graham and the White Mountains. Afternoon highs today will be much cooler with values 7 to 15 degrees cooler than Monday. Temperatures on Wednesday will rebound to within a few degrees of normal as ridging begins to build over the area from the west.
Thursday into the weekend, dry conditions return with seasonable temperatures under upper level ridging. A weak disturbance may undercut the ridge on Saturday, but moisture should remain well south of the area.
Early next week, deterministic and ensemble model solutions are suggesting some general troughiness and another weather system passing through the southwest states. Details to be ironed out with subsequent forecast packages.
AVIATION. Valid through 22/12Z. FEW-SCT clouds at 6k-10k ft MSL and BKN-OVC clouds at 11k-15k ft MSL this morning with some clearing late in the valid period. Isolated to scattered -SHRA continue to develop from west to east, with numerous -SHRA between 21/15Z and 21/21Z especially from KTUS eastward. Patchy BR possible with areas of heavier pcpn and brief MVFR cigs/vsbys. -SHRA decreasing from west to east this afternoon and this evening, with isolated -SHRA vicinity KTUS eastward tonight into Wednesday morning. SFC wind variable at generally less than 12 kts through the forecast period. Aviation discussion not updated for TAF amendments.
FIRE WEATHER. Scattered to numerous valley rain/mountain snow showers today. Lingering showers will continue Wednesday morning, mainly across the higher elevations east to northeast of Tucson. Dry conditions return area-wide Wednesday evening and continue through the upcoming weekend. 20-ft winds will mainly be terrain driven and less than 15 mph this week.
TWC WATCHES/WARNINGS/ADVISORIES. None.
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Tucson Ryan Field Airport, AZ||6 mi||50 min||W 5||10.00 mi||Fair||54°F||46°F||77%||1019.3 hPa|
|Tucson, Tucson International Airport, AZ||16 mi||42 min||NNW 8||10.00 mi||Overcast||56°F||41°F||57%||1016.7 hPa|
|Davis-Monthan Air Force Base, AZ||18 mi||97 min||NW 9||10.00 mi||Overcast||56°F||43°F||63%||1015.4 hPa|
Link to 5 minute data for KTUS
Wind History from TUS (wind in knots)
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GEOS Local Image of Southwest EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Tucson, AZ (8,2,3,4)(on/off)  Help
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