Alert archive / North Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Raleigh, NC

July 23, 2017Halifax County, North Carolina

NWS Raleigh, NC issued this special weather statement at Jul 23, 2017, 12:39 PM EDT for Halifax County, North Carolina. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 23, 2017, 12:39 PM EDT (16:39 UTC)
Expired: Jul 23, 2017, 1:30 PM EDT
In force: 51 min
Issued by: NWS Raleigh, NC

County Halifax County, NC

The radar

The Norfolk radar (KAKQ), 94 km from the middle of the area, began a volume at 16:39 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, 4.7 hours before the alert went out and 170 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: 1870 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -1 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

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 23, 11:28 AM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jul 23, 11:28 AM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, Jul 23, 11:55 AM EDT, 44 minutes before

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In the hours before

Local storm report, Jul 23, 10:47 AM EDT, 1 hour 52 minutes before

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Special weather statement, Jul 23, 12:39 PM EDT, 0 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 23, 2:00 PM EDT	Special Weather Statement	RAH	Moore	30 min
Jul 23, 2:06 PM EDT	Special Weather Statement	RAH	Stanly	39 min
Jul 23, 2:20 PM EDT	Areal Flood Advisory	RAH	Stanly	115 min
Jul 23, 2:32 PM EDT	Special Weather Statement	RAH	Stanly	43 min
Jul 23, 2:44 PM EDT	Special Weather Statement	RAH	Montgomery	46 min
Jul 23, 2:50 PM EDT	Special Weather Statement	RAH	Cumberland	40 min
Jul 23, 3:14 PM EDT	Special Weather Statement	RAH	Moore	46 min
Jul 23, 3:21 PM EDT	Special Weather Statement	RAH	Richmond	39 min
Jul 23, 3:24 PM EDT	Special Weather Statement	RAH	Harnett	51 min
Jul 23, 3:43 PM EDT	Severe Thunderstorm Warning	RAH	Montgomery, Moore, Richmond	77 min
Jul 23, 3:47 PM EDT	Special Weather Statement	RAH	Anson	43 min
Jul 23, 3:49 PM EDT	Special Weather Statement	RAH	Hoke	41 min
Jul 23, 3:55 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Moore, Richmond, Scotland	65 min
Jul 23, 4:02 PM EDT	Special Weather Statement	RAH	Cumberland	58 min
Jul 23, 4:13 PM EDT	Special Weather Statement	RAH	Johnston	62 min
Jul 23, 4:14 PM EDT	Areal Flood Advisory	RAH	Hoke, Moore, Richmond, Scotland	3 hr
Jul 23, 4:21 PM EDT	Special Weather Statement	RAH	Anson, Stanly	54 min
Jul 23, 4:25 PM EDT	Special Weather Statement	RAH	Forsyth	50 min
Jul 23, 4:27 PM EDT	Special Weather Statement	RAH	Davidson	48 min
Jul 23, 4:35 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Hoke	70 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	52 min
Jul 23, 4:49 PM EDT	Flash Flood Warning	RAH	Hoke, Moore, Richmond, Scotland	3 hr
Jul 23, 4:57 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Moore, Richmond, Scotland	66 min
Jul 23, 5:09 PM EDT	Special Weather Statement	RAH	Chatham	51 min
Jul 23, 5:25 PM EDT	Severe Thunderstorm Warning	RAH	Guilford	49 min
Jul 23, 5:26 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Chatham, Durham, Orange, Wake	64 min
Jul 23, 5:31 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	18 min
Jul 23, 5:46 PM EDT	Special Weather Statement	RAH	Nash	44 min
Jul 23, 5:54 PM EDT	Special Weather Statement	RAH	Cumberland	66 min
Jul 23, 5:55 PM EDT	Special Weather Statement	RAH	Sampson	65 min
Jul 23, 6:11 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Franklin, Granville, Halifax, Nash, Wake and 1 more	79 min
Jul 23, 6:23 PM EDT	Areal Flood Advisory	RAH	Alamance, Chatham, Durham, Orange, Wake	3 hr
Jul 23, 6:34 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Durham, Wake	56 min
Jul 23, 6:56 PM EDT	Severe Thunderstorm Warning	RAH	Wake	44 min
Jul 23, 7:24 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Franklin, Halifax, Johnston, Nash, Wilson	81 min
Jul 23, 7:39 PM EDT	Special Weather Statement	RAH	Johnston	66 min

Nearby

Special Weather Statements in North Carolina, 2017 Every special weather statement 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.