Alert archive / North Carolina / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 910

October 1, 200841 counties in North Carolina; 8 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Oct 1, 2008, 1:40 PM EDT for 41 counties in North Carolina; 8 counties in Virginia. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Oct 1, 2008, 1:40 PM EDT (17:40 UTC)
Expired: Oct 1, 2008, 9:00 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 49 counties

Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, City of Chesapeake, VA, City of Franklin, VA, City of Norfolk, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Isle of Wight County, VA, Southampton County, VA

The radar

The Morehead City radar (KMHX), 109 km from the middle of the area, began a volume at 17:43 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Oct 1, 2:00 PM EDT	Severe Thunderstorm Warning	MHX	Craven, Jones, Lenoir, Pitt	45 min
Oct 1, 2:07 PM EDT	Severe Thunderstorm Warning	AKQ	City of Chesapeake, City of Virginia Beach	36 min
Oct 1, 2:18 PM EDT	Severe Thunderstorm Warning	MHX	Lenoir, Pitt	27 min
Oct 1, 2:20 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Johnston, Sampson	40 min
Oct 1, 2:25 PM EDT	Tornado Warning	RAH	Cumberland, Harnett, Sampson	35 min
Oct 1, 2:28 PM EDT	Severe Thunderstorm Warning	MHX	Jones, Lenoir	23 min
Oct 1, 2:37 PM EDT	Severe Thunderstorm Warning	MHX	Beaufort	38 min
Oct 1, 2:42 PM EDT	Severe Thunderstorm Warning	AKQ	Currituck	33 min
Oct 1, 2:42 PM EDT	Tornado Warning	MHX	Craven, Jones, Lenoir	22 min
Oct 1, 2:45 PM EDT	Severe Thunderstorm Warning	MHX	Tyrrell, Washington	45 min
Oct 1, 2:59 PM EDT	Tornado Warning	MHX	Beaufort	31 min
Oct 1, 2:59 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Sampson, Wayne	34 min
Oct 1, 3:05 PM EDT	Severe Thunderstorm Warning	AKQ	Camden, Currituck	29 min
Oct 1, 3:08 PM EDT	Tornado Warning	RAH	Johnston, Sampson, Wayne	52 min
Oct 1, 3:10 PM EDT	Severe Thunderstorm Warning	MHX	Craven, Lenoir, Pitt	27 min
Oct 1, 3:26 PM EDT	Severe Thunderstorm Warning	ILM	Robeson	49 min
Oct 1, 3:26 PM EDT	Severe Thunderstorm Warning	MHX	Duplin, Jones, Lenoir	34 min
Oct 1, 3:30 PM EDT	Severe Thunderstorm Warning	MHX	Beaufort, Hyde	45 min
Oct 1, 3:31 PM EDT	Severe Thunderstorm Warning	MHX	Tyrrell, Washington	44 min
Oct 1, 3:45 PM EDT	Tornado Warning	RAH	Wayne	18 min
Oct 1, 3:51 PM EDT	Tornado Warning	MHX	Lenoir	23 min
Oct 1, 4:01 PM EDT	Severe Thunderstorm Warning	MHX	Onslow	44 min
Oct 1, 4:05 PM EDT	Severe Thunderstorm Warning	MHX	Craven	40 min
Oct 1, 4:16 PM EDT	Severe Thunderstorm Warning	MHX	Hyde	44 min
Oct 1, 4:18 PM EDT	Severe Thunderstorm Warning	MHX	Greene, Lenoir, Pitt	42 min
Oct 1, 4:36 PM EDT	Severe Thunderstorm Warning	MHX	Jones	39 min
Oct 1, 4:42 PM EDT	Severe Thunderstorm Warning	MHX	Beaufort	48 min
Oct 1, 4:46 PM EDT	Severe Thunderstorm Warning	MHX	Craven, Jones, Pamlico	44 min
Oct 1, 4:47 PM EDT	Severe Thunderstorm Warning	MHX	Dare	43 min
Oct 1, 4:53 PM EDT	Severe Thunderstorm Warning	MHX	Onslow	27 min
Oct 1, 5:01 PM EDT	Severe Thunderstorm Warning	MHX	Duplin	44 min
Oct 1, 5:12 PM EDT	Tornado Warning	MHX	Martin	23 min
Oct 1, 5:18 PM EDT	Tornado Warning	MHX	Beaufort, Martin, Pitt	23 min
Oct 1, 5:19 PM EDT	Severe Thunderstorm Warning	MHX	Craven, Pamlico	41 min
Oct 1, 5:50 PM EDT	Tornado Warning	AKQ	Bertie, Chowan	25 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 5.7 hours before the alert went out and 108 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: 413 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 1, 3:54 AM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 23 more	96 min
Oct 1, 12:28 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 32 more	3 hr
Oct 1, 4:24 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 28 more	96 min
Oct 1, 7:06 PM EDT	Mesoscale Discussion	SPC	Carteret, Craven, Dare, Hyde, Onslow, Pamlico and 1 more	114 min

Nearby

Severe Thunderstorm Watches in North Carolina, 2008 Severe Thunderstorm Watches in Virginia, 2008 Every severe thunderstorm watch in 2008

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.