Alert archive / Virginia / Frost Advisories in 2006

Frost Advisory 2, NWS Wakefield, VA

October 14, 200621 counties in Virginia; 4 counties in North Carolina; Somerset County, Worcester County, Maryland

NWS Wakefield, VA issued this frost advisory at Oct 14, 2006, 4:30 AM EDT for 21 counties in Virginia; 4 counties in North Carolina; Somerset County, Worcester County, Maryland. It took effect at Oct 15, 2006, 3:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 14, 2006, 4:30 AM EDT (08:30 UTC)
In effect from
Oct 15, 2006, 3:00 AM EDT
Expired
Oct 15, 2006, 8:00 AM EDT
In force
5 hr
Issued by
NWS Wakefield, VA
All 27 counties

Somerset County, MD, Worcester County, MD, Bertie County, NC, Gates County, NC, Hertford County, NC, Northampton County, NC, Brunswick County, VA, Caroline County, VA, Charles City County, VA, City of Emporia, VA, City of Franklin, VA, City of Hopewell, VA, City of Petersburg, VA, City of Williamsburg, VA, Dinwiddie County, VA, Greensville County, VA, James City County, VA, Lunenburg County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA

The radar

The Norfolk radar (KAKQ), 19 km from the middle of the area, began a volume at 08:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 8.5 hours before the alert went out and 203 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2006-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2006-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2044 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 14, 4:30 AM EDTFreeze WarningAKQAmelia, Caroline, Cumberland, Fluvanna, Goochland, Nottoway and 2 more28 hr

Nearby

Frost Advisories in Virginia, 2006Frost Advisories in North Carolina, 2006Frost Advisories in Maryland, 2006Every frost advisory in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.