Discover and read the best of Twitter Threads about #AZwx

Most recents (6)

Recent rain and snowmelt has contributed to considerable rises in flow in some of the creeks/streams/rivers, as well as reservoirs and lakes, in Arizona. This thread shows off changes that have occurred. Images from Sentinel-2 🛰️satellite from the European Space Agency. #azwx
The Lower Salt River, between Granite Reef Dam and Tempe Town Lake, has seen elevated flow since releases from Granite Reef Dam began back at the beginning of March. Gilbert and McKellips Roads remain closed due to the elevated flow. #azwx
With the Granite Reef Dam releases, Tempe Town Lake filled up with additional water. Water began spilling downstream from Tempe Town Lake back on on March 8th, leading to a few road closures. #azwx
Read 5 tweets
Latest seasonal predictions from NMME/IMME ensembles out today. Overall North Pacific pattern still looks very #LaNina-like: unusually wet PacNW and BC; unusually dry in SoCal & Lower Colorado Basin due to persistent NE Pacific ridging. HOWEVER... #WAwx #CAwx #AZwx (1/4) Maps of seasonal prediction...Image
...However, exact position of N. Pac. ridge is key. Too far east, & CA stays dry, but far enough west & Sierra benefits from cold storms diving south. High confidence in winter ridge, but CA will be on razor's edge--exact position will dictate dry vs wet overall. (2/4)#CAwx
This is why seasonal prediction is hard. It's quite likely models are correct about strong, anomalous North Pacific ridge signal (mainly due to #LaNina). But that doesn't directly translate to CA precip--it only offers a modest tilt in odds toward dry winter. #CAwx #CAwater (3/4)
Read 6 tweets
Watch as fire retardant is dropped on the #piplelinefire just six miles north of Flagstaff. Spokesperson with U.S. Forest Service Coconino National Forest tells me there should be up to 200 firefighters here by tonight. 1K+ acres burning at last check. #azwx #fox10phoenix
Video courtesy: Patrick Sweetser
Here on Schultz Pass Road, only residents are being allowed in. You can see the smoke spreading from the #PipelineFire. #fox10phoenix
Read 4 tweets
Wow....where is the high elevation smoke moving into the Western United States from? The smoke is the hazy slow moving mass moving in from the W/NW This will be a thread explaining what is happening. #azwx #smoke #wildfires2022Russia
This is an image from April 19th, 2022 of large wildfires/other fires from Siberia/Russia. The red dots show hot spots, with at least one large wildfire on the left side of the image. (courtesy of Fire Info for Resource Management System). #azwx #smoke #wildfires2022Russia
Here is a zoomed in image of one of the larger fires from the same day with significant smoke production moving east. #smoke #weather
Read 7 tweets
1/ Like Anthropocene risk specialist Mike Tyson said - Everyone has a plan until they get punched in the face.

2020 would be a blaring climate emergency if it weren't for the pandemic. Nature does not stay at home. All in one week in the US. ⬇️
2/ 10+ day long heatwave predicted in California & Western US states. Heat+humidity kills elderly ppl; It's as dangerous as the virus & requires cooling & social care. Already, wildfires & electricity blackouts for millions. weatherwest.com/archives/7427
3/ A straight ~400kms wall of hurricane speed wind suddenly formed (too numerically unstable to be predictable on models) and just mowed down farms & cities in midwest.
Read 6 tweets
New work led by @SciGibson @NASAJPL! We take a deep dive into northeastern Pacific high pressure ridging, including trends, implications for California drought, #AtmosphericRiver activity, and possible underlying physical mechanisms. (1/6) #CAwx #CAwater journals.ametsoc.org/doi/full/10.11…
We find several distinct "flavors" of high pressure ridging that tend to recur historically. Each spatial configuration affects atmospheric river activity & western U.S. precipitation in a distinct manner. (2/6) #CAwx #CAwater #AZwx #ORwx #WAwx journals.ametsoc.org/doi/full/10.11…
All three ridge types (north, west, and south-centered) are associated with drought in California and the Colorado River basin, but only "north-type" ridges are associated with drought in the Pacific Northwest. #CAwx #ORwx #WAwx #AZwx #UTwx #CAwater journals.ametsoc.org/doi/full/10.11… (3/6)
Read 6 tweets

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