Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.
|Sunrise 5:33AM||Sunset 7:26PM||Monday July 26, 2021 11:56 PM MST (06:56 UTC)||Moonrise 9:42PM||Moonset 8:10AM||Illumination 91%|
7 Day Forecast for Marine Location Near Flowing Wells, AZHourly EDIT Help
Area Discussion for - Tucson, AZ  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KTWC 262202 AFDTWC
Area Forecast Discussion National Weather Service Tucson AZ 302 PM MST Mon Jul 26 2021
SYNOPSIS. After record rainfall across much of the area over the past few days, we'll see fewer storms to start the work week. Conditions look favorable for another increase in storm coverage later in the week. Temperatures will climb back into the 90s for most locations.
DISCUSSION. A modest southerly flow is back in place across southeast Arizona, in between a low pushing into the Pacific and high pressure to our northeast and east. We'll largely rely on recirculating our moisture over the next couple of days with only direct outflow from thunderstorm complexes south of the border to reinforce moisture fields for now. Lower deserts to our west are continuing to see a bit deeper lower level moisture transport to help counter a mid level dry slot wrapping around the low from the south. That means we will tend to steadily lose moisture as daily convection draws fuel from boundary layer remnants. PW was around 1.5 inches on the morning sounding, but has likely dropped below 1.2 inches this afternoon. Surface dew points are generally in the 50s, down 4 to 8 degrees over the past 24 hours. As such we are struggling with storm coverage today as expected.
Tomorrow afternoon was looking similar, however conditions are favorable for a large thunderstorm complex near the Sonora/Chihuahua border just southeast of Douglas later this afternoon. We'll have to watch for any subsequent outflows tonight helping things along for us tomorrow. We pushed the forecast back into the climo range for afternoon thunderstorms Tuesday.
Another strong easterly wave currently visible on satellite is setting up to push over from the northern Gulf of Mexico. Ensemble means are still bringing this one across northern to central Mexico and through southern Chihuahua and Sonora by Thursday. Expect deep surge activity the second half of the week and enhanced storm coverage as the impulse rotates up from the south on the western flank of the high. Friday through Sunday are looking interesting again, but not as much of a forecast slam dunk as the last storm. If the ridge ends up a little further west than currently planned, it might make it more of a Yuma/Phoenix thing with only a 12 hour period or so where dynamics associated with the system help organize SE AZ storms.
AVIATION. Valid through 28/00Z. FEW-SCT clouds at 7k-11k ft MSL (locally BKN), with ISOLD -SHRA/- TSRA thru 27/04Z. Slowly clearing skies overnight. FEW-SCT clouds at 7k-11k ft MSL developing aft 27/17Z and ISOLD-SCT -SHRA/-TSRA between 27/19Z and 28/00Z. SFC wind less than 12 kts, except near TSRA where wind gusts to near 35 kts will be possible. Aviation discussion not updated for TAF amendments.
FIRE WEATHER. Isolated to scattered showers and thunderstorms will be possible each afternoon and evening through Wednesday. Precipitation chances then increase going into the upcoming weekend. Gusty, erratic winds and locally heavy rainfall will accompany any storms that do develop. High temperatures will be near normal to slightly below normal through Friday, lowering to below normal levels this weekend. 20-foot winds will generally be less than 15 mph when not influenced by thunderstorms.
TWC WATCHES/WARNINGS/ADVISORIES. None.
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|Davis-Monthan Air Force Base, AZ||9 mi||2 hrs||N 0||10.00 mi||Fair||82°F||65°F||57%||1012.5 hPa|
|Tucson, Tucson International Airport, AZ||12 mi||64 min||N 0||10.00 mi||Fair||83°F||65°F||55%||1012.3 hPa|
|Tucson Ryan Field Airport, AZ||16 mi||4.2 hrs||no data||10.00 mi||Clear||88°F||57°F||35%||1016.6 hPa|
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Wind History from DMA (wind in knots)
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|2 days ago||E||E||E||SE||Calm||Calm||Calm||SE||SE||Calm||E||Calm||E |
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