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Clear Sky Clocks
 

 

 

 

 

 

CHR

C. M. Crockett Park, Va

Savage

Mason Neck SP, Va

Centerville, Va

Leesburg, Va

Sky Meadows, Va

Big Meadows, Va

Little Bennett Regional Park, Md

Tuckahoe State Park, Md

Washington D.C.

Laurel Highlands, WV

Spruce Knob, WV

Cherry Springs, Pa

Each image has two rows. The top row is cloud cover and the bottom is transparency. The first red line is tonight at midnight and the second is tomorrow at midnight. Click on any image to go to the full clock.

Current GOES Satellite Imagery

High Resolution Infrared Satellite

IR Image Loop/Quickloop

High Resolution Visible Satellite

Visible Image Loop/Quickloop

Select on thumbnail images for most recent high res image, select loop to animate the last ten images. Counties can be toggled on or off. Questions and problems with these images go to Bob Bunge at bbunge at ladyandtramp dot com.

National Weather Service Forecasts

NWS Model Output Statistical (MOS) graphics (Learn more)

NWS Gridded MOS graphics. DC Area Zoom, WVa (goes out seven days)

NWS mid-range model for probability of clear skies. (goes out four days)

NWS mid-range model for probability of sky cover. (goes out four days)

NWS longer-range model for probabililty of mostly clear skies. (goes out eight days)

NWS Digital Forecasts

NWS Experimental Cloud Cover Graphical Forecasts (Northeast Metro Area)

Forecasts from local NWS forecast offices

NWS Sterling Weather Office (Virginia/Maryland)

Text Forecasts  NWS Forecast Discussion  Experimental Digital Forecast  Experimental Forecast Images
 Text                     Discussion            Tabular                Graphical

NWS Charleston Weather Office (West Virginia)

Graphical Forecasts: http://www.erh.noaa.gov/ndfd/graphical/sectors/lwx.php

Bob Bunge's Seven Day Cloud Cover Plots from NWS digital forecasts

Dulles Upper Air Sounding Plot (Java applet)

Upper air soundings plot temperature and dew point of the atmosphere as collected by a weather balloon. A tutorial for reading these is available. For astronomers, these can provide clues as to the stablity of the air - how good will the seeing be? These are normally updated every 12 hours.

Real-time Observation Monitor and Analysis Network (ROMAN). Locate weather stations near a location and see the most recent data. A map of the region showing available stations is available.

Quick links to stations in:
Virginia
Maryland
West Virginia

NWS Experimental Smoke and Ozone Forecasts - Might be usable to guage impact forest fires will have on transparency.

The Spruce Knob weather page. Contains weather info specific to the Spruce Knob observating sites.

If you are LOST in all this data, perhaps the best single source is the NWS forecast discussion. Here, the duty forecaster at the NWS office in Sterling puts down their thinking process behind the current forecast. Find it here. A glossary is available here.

Astronomy Weather Sites

Intellicast - Has stargazing section showing sky conditions throughout the day and night

Wunderground - Shows sun and moon rise/set times and has an interactive star chart

 

 

 

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