Frost Advisory from the National Weather Service:
URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTHERN INDIANA
356 PM EDT SUN APR 18 2010…FROST ADVISORY EARLY MONDAY MORNING…
.HIGH PRESSURE ACROSS LAKE SUPERIOR WILL SLOWLY BUILD INTO THE REGION OVERNIGHT. LIGHT WINDS COMBINED WITH MOSTLY CLEAR SKIES WILL PROVIDE FOR MARKED COOLING…WITH AREAS OF FROST LIKELY
EARLY MONDAY MORNING. THE FROST WILL QUICKLY MELT SHORTLY AFTER SUNRISE.[…] …FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EDT MONDAY…
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A FROST ADVISORY…WHICH IS IN EFFECT FROM 4 AM EDT /3 AM CDT/ TO 8 AM EDT /7 AM CDT/ MONDAY.
- TEMPERATURE…MORNING LOW TEMPERATURES GENERALLY IN THE MID 30S UNDER LIGHT WINDS AND MOSTLY CLEAR SKIES WILL FAVOR PATCHY FROST TO DEVELOP.
- IMPACTS…THE COLD TEMPERATURES COMBINED WITH AN EARLY START TO THE GROWING SEASON MAY RESULT IN DAMAGE TO SENSITIVE VEGETATION.PRECAUTIONARY/PREPAREDNESS ACTIONS…
A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.