Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 140, NWS Raleigh, NC

July 27, 2018Vance County, Warren County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 27, 2018, 6:58 PM EDT for Vance County, Warren County, North Carolina. It was in force for 47 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: Jul 27, 2018, 6:58 PM EDT (22:58 UTC)
Expired: Jul 27, 2018, 7:45 PM EDT
In force: 47 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Vance County, NC, Warren County, NC

The radar

The Raleigh/Durham radar (KRAX), 82 km from the middle of the area, began a volume at 23:01 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

Roanoke, VA (KRNK), launched 12:00Z, 11.0 hours before the alert went out and 143 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: 83 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 72 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 Jul 27, 4:15 PM EDT, 2 hours 43 minutes earlier.

Area forecast discussion, Jul 27, 4:15 PM EDT, 2 hours 43 minutes before

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Hazardous weather outlook, Jul 27, 2:56 PM EDT, 4 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Raleigh NC
256 PM EDT Fri Jul 27 2018

NCZ007>011-021>028-038>043-073>078-083>086-088-089-281900-
Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance-
Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham-Wake-
Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Wayne-Anson-
Richmond-Scotland-Hoke-Cumberland-Sampson-
256 PM EDT Fri Jul 27 2018

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This Afternoon and Tonight.

Hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

An unsettled and wetter than average pattern over the Appalachians
and eastern U.S. may result in episodes of heavy rainfall and
flooding in central NC by early to mid next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 27, 3:15 PM EDT, 3 hours 43 minutes before

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Special weather statement, Jul 27, 3:29 PM EDT, 3 hours 29 minutes before

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Special weather statement, Jul 27, 5:35 PM EDT, 1 hour 23 minutes before

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Special weather statement, Jul 27, 6:40 PM EDT, 18 minutes before

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Special weather statement, Jul 27, 6:45 PM EDT, 13 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
Jul 27, 3:15 PM EDT	Special Weather Statement	RAH	Wayne	30 min
Jul 27, 3:29 PM EDT	Special Weather Statement	RAH	Wake	31 min
Jul 27, 5:35 PM EDT	Special Weather Statement	RAH	Hoke	40 min
Jul 27, 6:16 PM EDT	Areal Flood Advisory	RAH	Hoke, Scotland	54 min
Jul 27, 6:40 PM EDT	Special Weather Statement	RAH	Warren	65 min
Jul 27, 6:45 PM EDT	Special Weather Statement	RAH	Scotland	45 min
Jul 27, 7:07 PM EDT	Areal Flood Advisory	RAH	Vance, Warren	113 min
Jul 27, 7:08 PM EDT	Special Weather Statement	RAH	Harnett	52 min
Jul 27, 7:27 PM EDT	Severe Thunderstorm Warning	RAH	Harnett	35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2018 Every severe thunderstorm warning in 2018

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.