Alert archive / North Carolina / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 54, NWS Raleigh, NC

April 19, 2008Forsyth County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Apr 19, 2008, 10:28 PM EDT for Forsyth County, North Carolina. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 19, 2008, 10:28 PM EDT (02:28 UTC)
Expired: Apr 19, 2008, 10:54 PM EDT
In force: 26 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon

County Forsyth County, NC

The radar

The Roanoke radar (KFCX), 99 km from the middle of the area, began a volume at 02:31 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.5 hours before the alert went out and 32 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: 40 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1047 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 166 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 19, 8:47 PM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Apr 19, 8:47 PM EDT, 1 hour 41 minutes before

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Hazardous weather outlook, Apr 19, 9:18 AM EDT, 13 hours 10 minutes before

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In the hours before

Special weather statement, Apr 19, 8:29 PM EDT, 1 hour 59 minutes before

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Special weather statement, Apr 19, 9:12 PM EDT, 1 hour 16 minutes before

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Special weather statement, Apr 19, 9:24 PM EDT, 1 hour 4 minutes before

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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 1:08 PM EDT	Severe Thunderstorm Warning	RAH	Stanly	52 min
Apr 20, 1:19 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Wilson	41 min
Apr 20, 1:42 PM EDT	Severe Thunderstorm Warning	RAH	Guilford, Randolph	48 min
Apr 20, 1:54 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Nash	51 min
Apr 20, 2:31 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	29 min
Apr 20, 2:34 PM EDT	Severe Thunderstorm Warning	RAH	Guilford, Randolph	41 min
Apr 20, 2:47 PM EDT	Severe Thunderstorm Warning	RAH	Guilford	43 min
Apr 20, 2:54 PM EDT	Tornado Warning	RAH	Randolph	16 min
Apr 20, 2:57 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	33 min
Apr 20, 3:11 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Warren	23 min
Apr 20, 3:19 PM EDT	Flash Flood Warning	RAH	Halifax	116 min
Apr 20, 3:23 PM EDT	Severe Thunderstorm Warning	RAH	Chatham	52 min
Apr 20, 3:24 PM EDT	Severe Thunderstorm Warning	RAH	Lee	51 min
Apr 20, 4:00 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax	45 min
Apr 20, 4:01 PM EDT	Severe Thunderstorm Warning	RAH	Chatham	29 min
Apr 20, 4:22 PM EDT	Severe Thunderstorm Warning	RAH	Lee	23 min
Apr 20, 4:49 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	41 min
Apr 20, 5:12 PM EDT	Flash Flood Warning	RAH	Halifax	2 hr
Apr 20, 5:26 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	49 min
Apr 20, 6:04 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Wake	41 min
Apr 20, 6:24 PM EDT	Severe Thunderstorm Warning	RAH	Warren	26 min
Apr 20, 6:57 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Sampson	46 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2008 Every severe thunderstorm warning 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.