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January 2023 Discobs


George BM
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15 minutes ago, Stormfly said:

Record high minimums?

A record is just about certain at IAD (51F is the record high min for 1/4 there). 

DCA RHM (1/4): 60F (slight chance)

BWI RHM (1/4): 61F (non-zero chance)

Just wonder exactly when tomorrow nights cold front moves through.

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22 minutes ago, Terpeast said:

My car thermometer usually has a warm bias, but it read 48 this morning. 

IAD went down to 55, and a local weather station nearest me in Ashburn said 54. 

We had 50.2 in Great Falls, so your car’s 48 seems reasonable. 

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2 hours ago, Terpeast said:

My car thermometer usually has a warm bias, but it read 48 this morning. 

IAD went down to 55, and a local weather station nearest me in Ashburn said 54. 

We have shaved a few degrees off the max.

Car thermometers are going to read closest to actual outdoor air temperature when the car is moving over the highway for a while.  In the dead of winter at ignition on too, the reading should be accurate.  Some just may have a bias (offset) too. 

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A Vibrant Sunset Advisory has been issued for the Greater Baltimore/DC Metropolitan region in effect from 4:50pm until 5:30pm est Wednesday, January 4, 2023. 

High clouds are clearing out to the west of the Blue Ridge Mountains with limited lower-level clouds to the WSW into southern WV. As sunlight reflects off of the base of the high clouds vibrant sunset colors may appear. The most vibrant part of the sunset will be between 5:00pm and 5:15pm.

Forecaster Wannabe: George BM

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