Weather Alert in Maryland
Flood Warning issued May 15 at 5:17AM EDT until May 15 at 9:17PM EDT by NWS Baltimore MD/Washington DC
AREAS AFFECTED: Washington, MD; Jefferson, WV
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Maryland...West Virginia...Virginia... Potomac River at Hancock affecting Morgan and Washington Counties. Potomac River at Little Falls affecting Montgomery and Fairfax Counties. ...The Flood Warning continues for the following rivers in Maryland...West Virginia...Virginia... Potomac River at Shepherdstown affecting Berkeley, Jefferson and Washington Counties. Potomac River at Harpers Ferry affecting Jefferson and Washington Counties. Potomac River at Edwards Ferry affecting Montgomery and Loudoun Counties. Potomac River at Point of Rocks affecting Frederick and Loudoun Counties. For the Potomac River...including Paw Paw, Hancock, Shepherdstown, Harpers Ferry, Point of Rocks, Edwards Ferry, Little Falls... Moderate flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Potomac River at Harpers Ferry. * WHEN...Until late this evening. * IMPACTS...At 19.5 feet, Floodwaters begin to cover the old federal armory site at historic Harpers Ferry. Backwater from the Shenandoah covers most areas between the normal river channel and the elevated Winchester & Potomac Railroad tracks. * ADDITIONAL DETAILS... - At 4:45 AM EDT Thursday the stage was 19.1 feet, or 1.1 feet above flood stage. - Recent Activity...The maximum river stage in the 24 hours ending at 4:45 AM EDT Thursday was 19.1 feet. - Forecast...The river is expected to rise to a crest of 19.1 feet this morning. It will then fall below flood stage late this afternoon. - Flood stage is 18.0 feet. - Flood History...This crest compares to a previous crest of 19.1 feet on 05/19/2011. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov/washington or www.weather.gov/baltimore. The next statement will be issued this afternoon at 130 PM EDT.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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