Weather Alert in Indiana

Recent Locations: Questa, NM Bloomington, IL Romney, IN

Current Alerts for Romney, IN: Dense Fog Advisory Special Weather Statement

Dense Fog Advisory issued February 16 at 2:25AM EST until February 16 at 11:00AM EST by NWS Wilmington OH

AREAS AFFECTED: Wayne; Fayette; Union; Franklin; Ripley; Dearborn; Ohio; Switzerland; Carroll; Gallatin; Boone; Kenton; Campbell; Owen; Grant; Pendleton; Bracken; Robertson; Mason; Lewis; Hardin; Mercer; Auglaize; Darke; Shelby; Logan; Union; Delaware; Miami; Champaign; Clark; Madison; Franklin; Licking; Preble; Montgomery; Greene; Fayette; Pickaway; Fairfield; Butler; Warren; Clinton; Ross; Hocking; Hamilton; Clermont; Brown; Highland; Adams; Pike; Scioto

DESCRIPTION: * WHAT...Visibility near zero at times in dense fog. Some patchy freezing fog through daybreak is possible on bridges and elevated roadways. * WHERE...Area-wide. * WHEN...Until 11 AM EST this morning. * IMPACTS...Significant visibility reductions to near zero at times will necessitate extra caution for commuters through late morning. Temperatures below freezing in many areas will increase the threat for icy patches on elevated roadways.

INSTRUCTION: Maintain safe distance between vehicles and keep an eye on your external temperature sensor. Slow down. Maintain a steady speed on elevated roads with temperatures below freezing - do not accelerate or stop quickly if at all possible.

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Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

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