Tuesday, August 18, 2026

Heat Continues

View of the Catalinas at 7:30 am MST this morning.


There were isolated showers in the northern portion of the ALERT Network yesterday - above plot for 24-hours ending at 8:00 am this morning. There was thunder and a sprinkle, with estimated east wind gusts of 30 to 35 mph, here after 5:00 pm. The airport reported thunder with gusts to 38 mph and no rainfall; while DM had thunder with gusts to 41 mph and a Trace.


GEFS plumes for QPF at airport (above) indicate an active week beginning tomorrow evening. The POPs for TUS from same runs are shown below.

NWS extreme heat graphic this morning is shown at bottom.


Saturday, August 15, 2026

Another Dry Day Here

View of the Rincons a bit before 6:00 am MST this morning.


Isolated reports of rain yesterday afternoon some parts of ALERT Network (above), generally avoiding the main metro area. However, TUS reported 0.19" and DM had a Trace, but nothing here or at Atmo.

 Current forecast from NWS (below) is calling for extreme heat first part of next week.

Friday, August 14, 2026

Showers Yesterday But Not Here

Dreary skies this morning at 8:30 am MST, with a few cumulus already over the Catalinas.


Plot of detected CG flashes through 0203 am this morning (above) shows a Tucson donut hole. However, showers were observed across parts of the ALERT Network (below). It was dry here, but note the heavy amounts in the southern portion of the Network.



Plumes for QPF from the 06 UTC GEFS runs (above) indicate a quiet period until late next week. The current NWS forecast through the weekend is shown below.

Thursday, August 13, 2026

Stormy Evening And Night

Thunderstorms started here at house around 6:15 pm MST yesterday and continued well into the night. Bright CG flash above, looking toward the Catalinas at about 2:45 am, produced a long rumble of thunder here.


Rainfall was widespread across the ALERT Network (above and below) for 24-hours ending at 8:00 am this morning. Note the many reports of an inch or more (35 sites) and several sites with two inches or more (6 sites). Here at house we had only 0.49". That was still the second highest single event of the entire year, exceeded only by the 0.79" that fell on January 8th. DM reported 1.01"; TUS had 0.78" and Atmo logged in with 0.36".


Current morning forecast for TUS (below) calls for another stormy day.

Wednesday, August 12, 2026

Dry Here

Heavy cloud cover over our area at 6:45 am MST this morning.


Plot of detected CG flashes for 24-hours ending at 1403 UTC (0703 am) this morning shows that thunderstorms mostly avoided our area. However, the ALERT data ending at 7:00 am (below) shows rainfall scattered around the area, but again mostly avoiding the Tucson metro area. TUS and DM reported a Trace of rain, but there was none here or at Atmo.



Graphic from NWS this morning (above) shows chances for rain tonight. The current morning forecast for the airport through Friday is shown below.

Tuesday, August 11, 2026

Thunder Here Yesterday Evening


Nice color over the Rincons at 5:40 am MST this morning.


Plot of detected CG flashes (above) indicates that the activity was scattered around the network yesterday afternoon. As confirmed by reports from the ALERT Network (below) for 24-hours ending at 8:00 am this morning. We had thunder here around 7:00 pm but only a Trace of rain. DM AFB reported thunder and a Trace, but with a severe gust to 59 mph; Tucson had thunder but no rain; and Atmo reported 0.03" of rain, probably with thunder.



The 06 UTC GEFS plumes for QPF at the airport (above) indicate a significant rain event beginning this evening. The POPs from same runs for TUS (below) are very high this evening and tomorrow evening.
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Current NWS forecast (below) for the airport continues the Flash Flood Watch and indicates highest POPs for rain tomorrow night.

Monday, August 10, 2026

More Storms

Heavy storm coming off Catalinas at 530 pm MST yesterday afternoon.

There were scattered reports of rain around the ALERT network yesterday (below). We had thunder and 0.01" here, as did TUS. A trace was reported by DM and Atmo had no rain.



Graphics from the NWS (above and below) re thunderstorms today and a Flash Flood Watch.



Plumes from the 06 UTC GEFS runs (above) indicate an active several days this week. The POPs for TUS (from same runs - below) are running 70 to 50 percent for next 4 days.


Forecast for total rainfall through 12 UTC on Thursday is shown below from the 12 UTC runs of NBM.