Alert archive / North Carolina / Heat Advisories in 2015

Heat Advisory 4, NWS Raleigh, NC

June 17, 201520 counties in North Carolina

NWS Raleigh, NC issued this heat advisory at Jun 17, 2015, 3:40 PM EDT for 20 counties in North Carolina. It took effect at Jun 18, 2015, 12:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jun 17, 2015, 3:40 PM EDT (19:40 UTC)
In effect from: Jun 18, 2015, 12:00 PM EDT
Expired: Jun 18, 2015, 7:00 PM EDT
In force: 7 hr
Issued by: NWS Raleigh, NC

Counties Anson County, NC, Chatham County, NC, Cumberland County, NC, Edgecombe County, NC, Franklin County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 41 km from the middle of the area, began a volume at 19:42 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, 7.7 hours before the alert went out and 117 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: 67 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1372 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: 4 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 heat advisory 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 heat advisory went out at Jun 17, 3:30 PM EDT, 10 minutes earlier.

Area forecast discussion, Jun 17, 3:30 PM EDT, 10 minutes before

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Hazardous weather outlook, Jun 17, 3:43 AM EDT, 11 hours 57 minutes before

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In the hours before

Special weather statement, Jun 17, 3:19 PM EDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
319 PM EDT WED JUN 17 2015

NCZ086-088-172015-
CUMBERLAND NC-HOKE NC-
319 PM EDT WED JUN 17 2015

...SCATTERED STRONG THUNDERSTORMS WILL CONTINUE TO DEVELOP AND
AFFECT PORTIONS OF SOUTHERN CUMBERLAND AND SOUTHEASTERN HOKE
COUNTIES UNTIL 415 PM EDT...

AT 317 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
DEVELOPING STRONG THUNDERSTORMS FROM NEAR ANTIOCH AND RAEFORD
TO HOPE MILLS...MOVING EAST AT 15 MPH.

WIND GUSTS UP TO 45 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
RAEFORD...ANTIOCH...HOPE MILLS...STEDMAN...AUTRYVILLE...ROCKFISH...
CEDAR CREEK...BOWMORE...SILVER CITY AND BUSHY LAKE NATURAL AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. WIND GUSTS AS HIGH AS
45 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 3484 7935 3500 7929 3502 7866 3496 7861
      3491 7854 3490 7855 3486 7849 3485 7851
      3485 7883 3483 7890 3490 7894 3495 7904
      3483 7919
TIME...MOT...LOC 1917Z 289DEG 14KT 3490 7925

26

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 3:34 AM EDT	Heat Advisory	RAH	Anson, Cumberland, Harnett, Hoke, Lee, Montgomery and 5 more	16 hr
Jun 17, 3:19 PM EDT	Special Weather Statement	RAH	Cumberland	56 min
Jun 17, 7:26 PM EDT	Special Weather Statement	RAH	Person	34 min
Jun 17, 7:41 PM EDT	Severe Thunderstorm Warning	RAH	Granville, Person	49 min
Jun 17, 7:56 PM EDT	Special Weather Statement	RAH	Johnston	64 min

Nearby

Heat Advisories in North Carolina, 2015 Every heat advisory in 2015

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.