Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 141, NWS Raleigh, NC

July 27, 2018Harnett County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 27, 2018, 7:27 PM EDT for Harnett County, North Carolina. It was in force for 35 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, 7:27 PM EDT (23:27 UTC)
Expired
Jul 27, 2018, 8:02 PM EDT
In force
35 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Harnett County, NC

The radar

The Raleigh/Durham radar (KRAX), 48 km from the middle of the area, began a volume at 23:30 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

Newport, NC (KMHX), launched 12:00Z, 11.5 hours before the alert went out and 192 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, Newport, NC at 12:00Z on 2018-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2236 joules per kilogram.LCLEL10008507005003002001001 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, Newport, NC at 12:00Z on 2018-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939Sfc1 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
2236 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
55 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, 3 hours 12 minutes earlier.

Area forecast discussion, Jul 27, 4:15 PM EDT, 3 hours 12 minutes before
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Hazardous weather outlook, Jul 27, 2:56 PM EDT, 4 hours 31 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, 4 hours 12 minutes before
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Special weather statement, Jul 27, 3:29 PM EDT, 3 hours 58 minutes before
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Special weather statement, Jul 27, 5:35 PM EDT, 1 hour 52 minutes before
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Special weather statement, Jul 27, 6:40 PM EDT, 47 minutes before
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Special weather statement, Jul 27, 6:45 PM EDT, 42 minutes before
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Special weather statement, Jul 27, 7:08 PM EDT, 19 minutes before
Special Weather Statement
National Weather Service Raleigh NC
708 PM EDT FRI JUL 27 2018

NCZ077-088-280000-
Harnett NC-Cumberland NC-
708 PM EDT FRI JUL 27 2018

...A STRONG THUNDERSTORM WILL AFFECT EASTERN HARNETT AND NORTH
CENTRAL CUMBERLAND COUNTIES UNTIL 800 PM EDT...

At 707 PM EDT, Doppler radar was tracking a strong thunderstorm near
Godwin, or 9 miles southeast of Lillington, moving north at 10 mph.

Pea size hail and wind gusts up to 40 mph will be possible with this
storm.

Heavy rain and minor flooding will also be possible with this storm.

Locations impacted include...
Lillington, Dunn, Angier, Godwin, Erwin, Coats, Falcon, Linden,
Anderson Creek and Buies Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3522 7899 3553 7873 3552 7869 3550 7868
      3549 7866 3547 7865 3543 7861 3540 7860
      3534 7853 3532 7854 3530 7858 3527 7858
      3525 7861 3521 7863 3520 7863 3520 7864
      3517 7864
TIME...MOT...LOC 2307Z 186DEG 10KT 3528 7874

23

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 3:15 PM EDTSpecial Weather StatementRAHWayne30 min
Jul 27, 3:29 PM EDTSpecial Weather StatementRAHWake31 min
Jul 27, 5:35 PM EDTSpecial Weather StatementRAHHoke40 min
Jul 27, 6:16 PM EDTAreal Flood AdvisoryRAHHoke, Scotland54 min
Jul 27, 6:40 PM EDTSpecial Weather StatementRAHWarren65 min
Jul 27, 6:45 PM EDTSpecial Weather StatementRAHScotland45 min
Jul 27, 6:58 PM EDTSevere Thunderstorm WarningRAHVance, Warren47 min
Jul 27, 7:07 PM EDTAreal Flood AdvisoryRAHVance, Warren113 min
Jul 27, 7:08 PM EDTSpecial Weather StatementRAHHarnett52 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2018Every 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.