Alert archive / North Carolina / Heat Advisories in 2017

Heat Advisory 1, NWS Raleigh, NC

July 7, 20175 counties in North Carolina

NWS Raleigh, NC issued this heat advisory at Jul 7, 2017, 12:38 PM EDT for 5 counties in North Carolina. It took effect at Jul 7, 2017, 1:00 PM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Jul 7, 2017, 12:38 PM EDT (16:38 UTC)
In effect from: Jul 7, 2017, 1:00 PM EDT
Expired: Jul 7, 2017, 6:00 PM EDT
In force: 5 hr
Issued by: NWS Raleigh, NC

Counties Cumberland County, NC, Hoke County, NC, Sampson County, NC, Scotland County, NC, Wayne County, NC

The radar

The Raleigh/Durham radar (KRAX), 73 km from the middle of the area, began a volume at 16:44 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, 4.6 hours before the alert went out and 152 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: 226 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Jul 7, 12:25 PM EDT, 13 minutes earlier.

Area forecast discussion, Jul 7, 12:25 PM EDT, 13 minutes before

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Hazardous weather outlook, Jul 7, 4:32 AM EDT, 8 hours 6 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 6, 8:04 PM EDT	Special Weather Statement	RAH	Chatham	41 min
Jul 6, 8:12 PM EDT	Severe Thunderstorm Warning	RAH	Harnett	36 min
Jul 6, 8:21 PM EDT	Severe Thunderstorm Warning	RAH	Harnett	39 min
Jul 6, 8:22 PM EDT	Special Weather Statement	RAH	Cumberland, Hoke	38 min
Jul 6, 8:41 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Hoke	64 min
Jul 6, 9:00 PM EDT	Special Weather Statement	RAH	Person	45 min
Jul 6, 9:10 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Sampson, Wayne	52 min
Jul 7, 2:24 PM EDT	Special Weather Statement	RAH	Edgecombe	21 min
Jul 7, 2:30 PM EDT	Special Weather Statement	RAH	Montgomery, Stanly	45 min
Jul 7, 6:40 PM EDT	Special Weather Statement	RAH	Bladen	20 min
Jul 7, 7:03 PM EDT	Special Weather Statement	RAH	Cumberland	57 min
Jul 7, 7:43 PM EDT	Special Weather Statement	RAH	Sampson	32 min

Nearby

Heat Advisories in North Carolina, 2017 Every heat advisory in 2017

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.