Tag Archives: Arizona sunset

Why the Catalinas glow pink at sunset

Amazing atmospheric optics in action.

Often times during the year, the peaks of the Santa Catalina Mountains glow during dusk and dawn. It’s a phenomenon known as “alpenglow”. Here’s how it works.

Continue reading Why the Catalinas glow pink at sunset

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Why the sky looked like this Friday night

Thanks to a unique-looking sunset, social media was buzzing Friday night.

Many News 4 Tucson viewers posted pictures of the eastern sky around sunset, which showed different colored rays of light. What appeared over the Old Pueblo is called anti-crepuscular rays. Here’s how they form.

As the sun was setting, the sunlight was being blocked by cloud cover in the western sky. This cloud cover created shadows, which were cast in the eastern horizon. Because sunlight appears to converges as it gets lower in the horizon, these parallel shafts of light took on the look of the Arizona state flag.

When these shadows appear in the same horizon as the sunrise or sunset, they are labeled crepuscular rays. Because Friday night’s shadows were showing in the opposite horizon as the sunset, they take on the anti-crepuscular labeling.

Thursday’s Tucson Forecast: Winter without the chill

TODAY’S BEAMISH BLOGCAST

THE CLIFF NOTES

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Today – Mostly sunny. 69°, north wind 5 MPH.

Tonight – Mostly clear. 44°, southeast wind 5-10 MPH.

Tomorrow – Mostly sunny. 73°, north wind 5 MPH.

FORECAST DISCUSSION

A Winter warming trend is underway.

Highs peak in the upper 60s today. Southern Arizona should see more sunshine than yesterday as temps run 2-4° above average. Nighttime lows bottom out in the mid 40s for Metro Tucson, while freezing temps are likely in eastern Cochise County.

As high pressure approaches from the west, temperatures climb into the 70s starting tomorrow. Models indicate a jet stream propped well north of the state for the foreseeable future, keeping any weather of significance well away from the Sonoran Desert. Highs early next week may run up to 10° above average for mid-December standards.

SKY CANDY OF THE DAY

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Decorative dusk, captured Wednesday night by John Lansdale.

Friday’s Tucson Forecast: Storm chances ramping up

TODAY’S BEAMISH BLOGCAST

THE CLIFF NOTES

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Today – 10% chance of storms. 102°, west-southwest wind 10-15 MPH.

Tonight – 10% chance of showers. 79°, southeast wind 5-10 MPH.

Tomorrow – 20% chance of storms. 100°, west wind 10 MPH.

FORECAST DISCUSSION

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A slight thunder threat to wrap up the work week, but early next week may be a different story.

Metro rain chances sit at 10% today. While a stray storm can’t be ruled out in Tucson, areas along the International Border are favored for scattered storm development. Highs Friday likely reach the 100s, with nighttime lows drop to the upper 70s.

The weekend starts with isolated storm chances in the Old Pueblo. High pressure drifts toward the Four Corners early next week, allowing a mid level disturbance to approach from the southeast. This feature brings a better shot at scattered storms for Tucson Expect a 30% chance of storms Sunday and Monday for eastern Pima County.

Models indicate enough moisture to warrant slight storm chances through the middle to latter portion of next week. Mountains and the International Border may be the favored areas for storm development starting Tuesday. Metro highs remain in the 100s over the next several days.

SKY CANDY OF THE DAY

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Early Monsoon sunset, captured Thursday by Michael Vo in Marana. Lovely pic!

Wednesday’s Tucson Forecast: From Ice Break to record swelter

TODAY’S BEAMISH BLOGCAST

THE CLIFF NOTES

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Today – Partly cloudy. 96°, west-northwest wind 10 MPH.

Tonight – Gradual clearing. 67°, southeast wind 5 MPH.

Tomorrow – Sunny & hot. 101°, west-northwest wind 10-15 MPH.

FORECAST DISCUSSION

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One more day with below average high temperatures.

A departing low pressure trough keeps today’s highs in the mid 90s for Tucson. Areas south and east of the metro stand a chance of isolated storms this afternoon. Little rainfall is anticipated & dry lightning will increase the wildfire threat. Gradual clearing is expected overnight.

High pressure takes full control over the forecast starting tomorrow, supplying the first significant heat wave of the Summer. Tucson finally breaks the ice & hits triple digits for the first time this year Thursday afternoon. Temperatures skyrocket to the 107-110° range Friday through the weekend, threatening record highs. An Excessive Heat Warning is in effect this weekend for much of Pima, Pinal, Santa Cruz and Graham Counties.

Summer’s swelter continues early next week with temperatures in the afternoon hours around 106-110°.

SKY CANDY OF THE DAY

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Colorful way to end May, captured Tuesday by Randall Kayfes in Marana.

Friday’s Tucson Forecast: Atmospheric perfection for the holiday weekend!

TODAY’S BEAMISH BLOGCAAST

THE CLIFF NOTES

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Today – Sunny. 88°, west wind 5-10 MPH.

Tonight – Clear. 60°, southeast wind 5-10 MPH.

Tomorrow – Sunny. 93°, southwest wind 10-15 MPH.

FORECAST DISCUSSION

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The best weather in the country for Memorial Day weekend may reside in southern Arizona.

Daytime highs run 6-8° below average this afternoon, according to 4WARN Meteorologist Jeff Beamish. The Old Pueblo peaks in the upper 80s today under sunny skies. Memorial Day weekend features light winds and highs in the low 90s. Tucson’s average high for late May is around 95°.

Overnight lows the next several nights drop to the low 60s for the lower elevations of eastern Pima County.

High pressure builds over the west coast early next week, driving a strong warming trend to start June. Models indicate this ridge settling over the southwest next Thursday, potentially bringing the first 100° day of 2016 to Tucson.

SKY CANDY OF THE DAY

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Soaring through a Sonoran sunset, captured Thursday by Claudia Brelaz Burnett. Will this take the Sky Candy of the Week honors? Find out later today on the blog!

Monday’s Tucson Forecast: Breezes & below normal temps

TODAY’S BEAMISH BLOGCAST

THE CLIFF NOTES

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Today – Sunny, breezy. 91°, west-southwest wind 15-25 MPH.

Tonight – Clear. 61°, southeast wind 5 MPH.

Tomorrow – Sunny, breezy. 90°, west-southwest wind 15-25 MPH.

FORECAST DISCUSSION

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Another week with gusty winds & below average high temps.

This afternoon features west-southwest winds gusting as high as 25 MPH. Metro Tucson reaches the low 90s for daytime highs, running 2-4° below average for late May. Much like the last few days, gusty winds decrease around 7-8 PM. Nighttime lows bottom out in the upper 50s to low 60s.

A very similar forecast plays out Tuesday and Wednesday. Sustained 20 MPH winds combine with low relative humidity to increase the wildfire danger by mid-week. For that reason, a Fire Weather Watch is in effect Wednesday for Metro Tucson and points east.

By late week, a low pressure trough stuck to our north finally moves away. Breezes relax Thursday afternoon, but may return by Saturday. Highs for Memorial Day weekend peak in the low 90s under sunny skies.

SKY CANDY OF THE DAY

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Blaze of cirrus, captured Sunday evening by Barb Mathers on Tucson’s northwest side. Strong start to the week’s weather photos!