Alert archive / North Carolina / Excessive Heat Warnings in 2012

Excessive Heat Warning 3, NWS Wakefield, VA

July 27, 2012City of Chesapeake, City of Virginia Beach, Virginia; 8 counties in North Carolina

NWS Wakefield, VA issued this excessive heat warning at Jul 27, 2012, 2:05 AM EDT for City of Chesapeake, City of Virginia Beach, Virginia; 8 counties in North Carolina. It took effect at Jul 27, 2012, 12:00 PM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 27, 2012, 2:05 AM EDT (06:05 UTC)
In effect from: Jul 27, 2012, 12:00 PM EDT
Expired: Jul 27, 2012, 6:25 PM EDT
In force: 6 hr
Issued by: NWS Wakefield, VA

Counties Bertie County, NC, Camden County, NC, Chowan County, NC, Currituck County, NC, Gates County, NC, Hertford County, NC, Pasquotank County, NC, Perquimans County, NC, City of Chesapeake, VA, City of Virginia Beach, VA

The radar

The Norfolk radar (KAKQ), 87 km from the middle of the area, began a volume at 06:09 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 6.1 hours before the alert went out and 197 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3064 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1175 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this excessive heat warning went out at Jul 27, 1:36 AM EDT, 29 minutes earlier.

Area forecast discussion, Jul 27, 1:36 AM EDT, 29 minutes before

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Hazardous weather outlook, Jul 26, 10:54 PM EDT, 3 hours 11 minutes before

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In the hours before

Special weather statement, Jul 26, 10:57 PM EDT, 3 hours 8 minutes before

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Special weather statement, Jul 26, 11:29 PM EDT, 2 hours 36 minutes before

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Special weather statement, Jul 27, 12:02 AM EDT, 2 hours 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 9:31 PM EDT	Heat Advisory	AKQ	Accomack, Amelia, Brunswick, Caroline, Charles City, Cumberland and 30 more	21 hr
Jul 27, 3:29 PM EDT	Special Weather Statement	AKQ	Lunenburg, Mecklenburg	61 min
Jul 27, 3:59 PM EDT	Special Weather Statement	AKQ	Charles City, King and Queen, New Kent	46 min
Jul 27, 4:07 PM EDT	Special Weather Statement	AKQ	Chesterfield, Dinwiddie, Henrico, Nottoway, City of Colonial Heights, City of Hopewell and 1 more	53 min
Jul 27, 4:31 PM EDT	Special Marine Warning	AKQ		119 min
Jul 27, 4:35 PM EDT	Special Weather Statement	AKQ	Brunswick, Mecklenburg	40 min
Jul 27, 4:39 PM EDT	Special Weather Statement	AKQ	Lunenburg, Nottoway	36 min
Jul 27, 4:43 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Gloucester, James City, King and Queen, Mathews, Middlesex and 2 more	47 min
Jul 27, 5:03 PM EDT	Special Weather Statement	AKQ	Dinwiddie, Nottoway, Prince George, City of Hopewell, City of Petersburg	42 min
Jul 27, 5:12 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Dinwiddie, Prince George, Surry, Sussex, City of Petersburg	33 min
Jul 27, 5:20 PM EDT	Special Weather Statement	AKQ	Mecklenburg	40 min
Jul 27, 5:23 PM EDT	Special Weather Statement	AKQ	Greensville, Sussex, City of Emporia	37 min
Jul 27, 5:35 PM EDT	Severe Thunderstorm Warning	AKQ	Greensville, Southampton, Sussex	40 min
Jul 27, 5:48 PM EDT	Severe Thunderstorm Warning	AKQ	Gloucester, York, City of Hampton, City of Newport News, City of Poquoson	27 min
Jul 27, 5:49 PM EDT	Special Marine Warning	AKQ		101 min
Jul 27, 5:55 PM EDT	Special Weather Statement	AKQ	Surry	35 min
Jul 27, 6:02 PM EDT	Special Weather Statement	AKQ	Amelia, Chesterfield, Cumberland, Fluvanna, Goochland, Hanover and 1 more	58 min
Jul 27, 6:04 PM EDT	Severe Thunderstorm Warning	AKQ	Gloucester, Isle of Wight, James City, Surry, York, City of Hampton and 2 more	41 min
Jul 27, 6:17 PM EDT	Special Weather Statement	AKQ	Northampton	58 min
Jul 27, 6:26 PM EDT	Special Weather Statement	AKQ	Greensville, Isle of Wight, Southampton, Surry, City of Emporia, City of Franklin and 1 more	64 min
Jul 27, 6:45 PM EDT	Special Weather Statement	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	60 min
Jul 27, 6:48 PM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, Southampton, City of Franklin, City of Suffolk	42 min
Jul 27, 7:05 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth, City of Virginia Beach	55 min
Jul 27, 7:16 PM EDT	Special Marine Warning	AKQ		119 min
Jul 27, 7:39 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	66 min
Jul 27, 3:03 PM EDT	Special Weather Statement	AKQ	Northampton	42 min
Jul 27, 3:44 PM EDT	Special Weather Statement	AKQ	Northampton	61 min
Jul 27, 7:54 PM EDT	Special Weather Statement	AKQ	Hertford, Northampton	66 min
Jul 26, 10:57 PM EDT	Special Weather Statement	AKQ	Dorchester	33 min
Jul 26, 11:29 PM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico	31 min
Jul 27, 12:02 AM EDT	Special Weather Statement	AKQ	Somerset, Wicomico, Worcester	58 min

Nearby

Excessive Heat Warnings in North Carolina, 2012 Excessive Heat Warnings in Virginia, 2012 Every excessive heat warning in 2012

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.