#HurricaneHilary is making landfall on Mexico's Baja California Peninsula with Category 1 force. Clouds and rain associated with the elongated system extend into the U.S. where #Hilary is headed today with accelerated forward speed, high winds, and heavy rains. #CAwx #AZwx #NVwx

UW-Madison CIMSS

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RT @NWSTucson: Today's #GOESWest 🛰️ satellite picture features broad low pressure rotating over the Pacific. This will move over the western United States and bring gradually cooler temperatures and chances for showers Wednesday night through the weekend. #azwx

NOAA Satellites

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RT @NWSTucson: We're getting a good view today of where the snow is (green) compared to bare ground (blue) from this color enhanced product from a @JPSSProgram satellite pass. #azwx

Source: @CIRA_CSU

Satellite imagery this morning shows the residual low level clouds/fog dissipating with areas of snow cover clearly visible in both the mountains and some valley locations. Enjoy the snow while it lasts, melting will be quick in valley and sun exposed locations! #azwx - NWS Tucson

CIRA

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RT @NWSTucson: Our weather-maker this week is this cut-off low system! A cut-off low references to when a closed circulation low has been "cut off" from the main flow pattern. You can see in the loop below how the low is more separated from the main upper level pattern. 🧵 #azwx https://t.co/lLJrUvOGJH

NOAA Satellites

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RT @NWSTucson: Interesting feature on satellite imagery!

This is called a Mesoscale Convective Vortex (MCV). It is an area of showers / tstorms that rotates counterclockwise around a low-pressure center.

While it may look like a hurricane🌀, it does not have near the strength of one! #azwx https://t.co/UOiYxwYZ26

NOAA Satellites

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True Color RGB images from @NOAASatellites #GOESEast highlighted a plume of blowing dust - originating from areas west of the Salton Sea in Southern California - moving eastward across Arizona: https://t.co/SDU5eypVMe#playing:true...; #CAwx #AZwx https://t.co/rRVOd9kRQw

UW-Madison CIMSS

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In a comparison of @NOAASatellites #GOESWest and #GOESEast Visible images with an overlay of the Fire Mask derived product, there was a #GOESEast fire detection nearly 4 hours before #GOESWest (due to topography blocking a direct view from #GOESWest). @NWSFlagstaff #AZwx https://t.co/MwYpwzKLrG

UW-Madison CIMSS

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RT @UWCIMSS: In a comparison of @NOAASatellites #GOESWest and #GOESEast Visible images with an overlay of the Fire Mask derived product, there was a #GOESEast fire detection nearly 4 hours before #GOESWest (due to topography blocking a direct view from #GOESWest). @NWSFlagstaff #AZwx https://t.co/MwYpwzKLrG

NOAA Satellites

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1-minute @NOAASatellites #GOES18/#GOESWest Infrared (+ the Fire Mask derived product) & Visible images showed that the #DragonBravoFire in Arizona produced 3 #pyrocumulonimbus clouds (shades of blue in the Infrared images) late in the day on 27 July. @NWSFlagstaff #AZwx https://t.co/DbFltCd8vO

UW-Madison CIMSS

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5-minute @NOAASatellites #GOES18/#GOESWest Infrared & Visible images (+ the Fire Mask derived product) showed that the #BroncoFire in Arizona produced a #pyrocumulonimbus cloud (shades of blues to reds on Infrared imagery). @NWSPhoenix #AZwx https://t.co/L4xGsKN3pC

UW-Madison CIMSS

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