Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 88, NWS Raleigh, NC

June 30, 2020Franklin County, Granville County, Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jun 30, 2020, 2:53 PM EDT for Franklin County, Granville County, Wake County, North Carolina. It was in force for 52 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: Jun 30, 2020, 2:53 PM EDT (18:53 UTC)
Expired: Jun 30, 2020, 3:45 PM EDT
In force: 52 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Franklin County, NC, Granville County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 44 km from the middle of the area, began a volume at 18:54 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 12:00Z, 6.9 hours before the alert went out and 123 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: 2 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1659 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 36 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 Jun 30, 1:00 PM EDT, 1 hour 53 minutes earlier.

Area forecast discussion, Jun 30, 1:00 PM EDT, 1 hour 53 minutes before

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Hazardous weather outlook, Jun 30, 4:14 AM EDT, 10 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Raleigh NC
414 AM EDT Tue Jun 30 2020

NCZ007>011-021>028-043-010930-
Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance-
Orange-Durham-Franklin-Nash-Edgecombe-Wilson-
414 AM EDT Tue Jun 30 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ038>042-073>078-083>086-088-089-010930-
Davidson-Randolph-Chatham-Wake-Johnston-Stanly-Montgomery-Moore-Lee-
Harnett-Wayne-Anson-Richmond-Scotland-Hoke-Cumberland-Sampson-
414 AM EDT Tue Jun 30 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...Today and tonight.

A few strong to severe storms are possible today across south central
North Carolina, mainly along and south of Highway 64. Damaging wind
gusts over 60 mph are the primary threat, mainly between 3 pm and 8
pm.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

In the hours before

Special weather statement, Jun 30, 12:47 PM EDT, 2 hours 6 minutes before

Special Weather Statement
National Weather Service Raleigh NC
1247 PM EDT Tue Jun 30 2020

NCZ089-301745-
Sampson NC-
1247 PM EDT Tue Jun 30 2020

...A STRONG THUNDERSTORM WILL AFFECT EASTERN SAMPSON COUNTY UNTIL 145
PM EDT...

At 1246 PM EDT, Doppler radar was tracking a strong thunderstorm near
Bowdens, or 9 miles northeast of Clinton, moving south at 25 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Clinton, Harrells and Turkey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3514 7834 3517 7816 3509 7817 3508 7816
      3490 7815 3474 7820 3471 7813 3472 7811
      3471 7811 3468 7816 3461 7821 3460 7826
TIME...MOT...LOC 1646Z 348DEG 22KT 3509 7822

Green

Special weather statement, Jun 30, 1:11 PM EDT, 1 hour 42 minutes before

Special Weather Statement
National Weather Service Raleigh NC
111 PM EDT Tue Jun 30 2020

NCZ089-301745-
Sampson NC-
111 PM EDT Tue Jun 30 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN SAMPSON COUNTY
UNTIL 145 PM EDT...

At 110 PM EDT, Doppler radar was tracking a strong thunderstorm near
Godwin, or 19 miles southeast of Lillington, moving east at 15 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Newton Grove, Hobbton and Spivey's Corner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3513 7864 3517 7864 3517 7863 3520 7864
      3520 7863 3521 7863 3523 7862 3525 7862
      3527 7858 3530 7858 3530 7853 3526 7848
      3526 7841 3528 7832 3528 7830 3526 7828
      3502 7836
TIME...MOT...LOC 1710Z 285DEG 13KT 3521 7857

Green

Special weather statement, Jun 30, 2:43 PM EDT, 10 minutes before

Special Weather Statement
National Weather Service Raleigh NC
243 PM EDT Tue Jun 30 2020

NCZ026-041-301915-
Franklin NC-Wake NC-
243 PM EDT Tue Jun 30 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WAKE AND CENTRAL
FRANKLIN COUNTIES UNTIL 315 PM EDT...

At 243 PM EDT, Doppler radar was tracking a strong thunderstorm near
Wake Forest, or 13 miles southwest of Louisburg, moving northeast at
10 mph.

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

Locations impacted include...
Wake Forest, Bunn, Rolesville and Youngsville.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3594 7818 3591 7820 3582 7843 3597 7857
      3614 7837
TIME...MOT...LOC 1843Z 233DEG 7KT 3594 7843

Green

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:29 AM EDT	Special Weather Statement	RAH	Edgecombe	61 min
Jun 30, 12:47 PM EDT	Special Weather Statement	RAH	Sampson	58 min
Jun 30, 1:11 PM EDT	Special Weather Statement	RAH	Sampson	34 min
Jun 30, 2:43 PM EDT	Special Weather Statement	RAH	Franklin	32 min
Jun 30, 3:29 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Johnston, Wake	31 min
Jun 30, 3:52 PM EDT	Special Weather Statement	RAH	Wilson	38 min
Jun 30, 4:09 PM EDT	Special Weather Statement	RAH	Johnston	51 min
Jun 30, 4:35 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wayne	40 min
Jun 30, 5:01 PM EDT	Special Weather Statement	RAH	Person	44 min
Jun 30, 5:31 PM EDT	Special Weather Statement	RAH	Durham	44 min
Jun 30, 5:53 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Person	52 min
Jun 30, 6:43 PM EDT	Special Weather Statement	RAH	Wake	47 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020 Every severe thunderstorm warning in 2020

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.