Wednesday, January 20, 2010

Third Period of Rain Sweeps Through


After only 0.02" from the rain band yesterday morning, a strong line of showers and rain came through last night with 30 to 40 mph winds. Above photo shows the snow-line came down to about 4000 ft MSL. Here at house we had 0.52" during the night and the 24-hour total was the most rainfall since July 3-4, last summer.
All but one of the Pima County ALERT gauges had measurable rainfall during past 24 hours and the one that didn't is probably out of service. Amounts at low elevations here in the city were generally 1/10 to 1/2 inch with higher elevation stations reporting mostly 1/2 to 3/4". Highest amount I saw in eastern pima County was 0.91" at Coronado Camp in the Catalinas. Note that amounts up in the mountains were likely higher since the snowfall was not captured in the ALERT gauges. Higher amounts occurred to the north with Luke AFB reporting 1.61" and Flagstaff over an inch of water equivalent from snowfall.
The forecast by the NWS of 100% POPs last night, made more than 48 hours in advance, was excellent and very gutsy - one of the best NWS forecasts since I moved out here. The models still indicate the main event will be tomorrow and into Friday; so all eyes are now turned toward the Pacific!

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