RSS feed source: US National Weather Service

* WHAT…Sub-freezing temperatures as low as 30. * WHERE…Central and Southeast Howard and Central and Southeast Montgomery Counties. * WHEN…Until 8 AM EST this morning. * IMPACTS…Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

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RSS feed source: US National Weather Service

* WHAT…Temperatures as low as 33 will result in frost formation. * WHERE…In DC, District of Columbia. In Maryland, Anne Arundel, Prince Georges, Southeast Harford, Southern Baltimore, Calvert, and St. Marys Counties. In Virginia, King George County, and Arlington/Falls Church/Alexandria. * WHEN…Until 8 AM EST this morning. * IMPACTS…Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

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RSS feed source: US National Weather Service

* WHAT…Visibility one quarter mile or less in dense fog. * WHERE…Austin, Colorado, Montgomery, San Jacinto, and Waller Counties. * WHEN…Until 9 AM CST this morning. * IMPACTS…Low visibility could make driving conditions hazardous.

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