Alert archive / North Carolina / Areal Flood Advisories in 2018

Areal Flood Advisory 21, NWS Newport/Morehead City, NC

July 21, 2018Dare County, Hyde County, North Carolina

NWS Newport/Morehead City, NC issued this areal flood advisory at Jul 21, 2018, 6:24 AM EDT for Dare County, Hyde County, North Carolina. It was in force for 111 min.

The area

The counties it named.

The facts

Issued: Jul 21, 2018, 6:24 AM EDT (10:24 UTC)
Expired: Jul 21, 2018, 8:15 AM EDT
In force: 111 min
Issued by: NWS Newport/Morehead City, NC
Area: Storm-based polygon

Counties Dare County, NC, Hyde County, NC

The radar

The Morehead City radar (KMHX), 123 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 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: 258 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 95 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 areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Newport/Morehead City, NC wrote its last area forecast discussion before this areal flood advisory went out at Jul 21, 4:28 AM EDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jul 21, 4:28 AM EDT, 1 hour 56 minutes before

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Hazardous weather outlook, Jul 21, 5:15 AM EDT, 1 hour 9 minutes before

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In the hours before

Special weather statement, Jul 21, 12:46 AM EDT, 5 hours 38 minutes before

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Special weather statement, Jul 21, 3:09 AM EDT, 3 hours 15 minutes before

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The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 21, 12:46 AM EDT	Special Weather Statement	MHX	Carteret, Pamlico	44 min
Jul 21, 3:09 AM EDT	Special Weather Statement	MHX	Hyde	36 min
Jul 21, 4:54 AM EDT	Special Marine Warning	MHX		36 min
Jul 21, 8:17 AM EDT	Areal Flood Advisory	MHX	Dare, Hyde	118 min
Jul 21, 8:24 AM EDT	Special Marine Warning	MHX		96 min
Jul 21, 8:29 AM EDT	Special Weather Statement	MHX	Dare	61 min
Jul 21, 10:02 AM EDT	Special Marine Warning	MHX		43 min
Jul 21, 10:04 AM EDT	Special Weather Statement	MHX	Dare	41 min

Nearby

Areal Flood Advisories in North Carolina, 2018 Every areal flood advisory 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.