Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 16, NWS Newport/Morehead City, NC

April 18, 20204 counties in North Carolina

NWS Newport/Morehead City, NC issued this severe thunderstorm warning at Apr 18, 2020, 11:56 AM EDT for 4 counties in North Carolina. It was in force for 49 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: Apr 18, 2020, 11:56 AM EDT (15:56 UTC)
Expired: Apr 18, 2020, 12:45 PM EDT
In force: 49 min
Issued by: NWS Newport/Morehead City, NC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Beaufort County, NC, Craven County, NC, Hyde County, NC, Pamlico County, NC

The radar

The Morehead City radar (KMHX), 60 km from the middle of the area, began a volume at 16:00 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, 3.9 hours before the alert went out and 60 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: 539 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 278 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.3

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 Newport/Morehead City, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 10:23 AM EDT, 1 hour 33 minutes earlier.

Area forecast discussion, Apr 18, 10:23 AM EDT, 1 hour 33 minutes before

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Hazardous weather outlook, Apr 18, 3:48 AM EDT, 8 hours 8 minutes before

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In the hours before

Special weather statement, Apr 18, 11:01 AM EDT, 55 minutes before

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Special weather statement, Apr 18, 11:25 AM EDT, 31 minutes before

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Special weather statement, Apr 18, 11:32 AM EDT, 24 minutes before

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Special weather statement, Apr 18, 11:34 AM EDT, 22 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
Apr 18, 10:55 AM EDT	Special Marine Warning	MHX		95 min
Apr 18, 11:01 AM EDT	Special Weather Statement	MHX	Greene, Martin, Pitt	29 min
Apr 18, 11:25 AM EDT	Special Weather Statement	MHX	Tyrrell, Washington	35 min
Apr 18, 11:31 AM EDT	Special Marine Warning	MHX		59 min
Apr 18, 11:32 AM EDT	Special Weather Statement	MHX	Duplin, Lenoir	28 min
Apr 18, 11:34 AM EDT	Special Weather Statement	MHX	Beaufort, Pitt	41 min
Apr 18, 11:48 AM EDT	Severe Thunderstorm Warning	MHX	Craven, Duplin, Jones, Lenoir, Onslow	42 min
Apr 18, 12:02 PM EDT	Special Marine Warning	MHX		58 min
Apr 18, 12:15 PM EDT	Special Marine Warning	MHX		60 min
Apr 18, 12:21 PM EDT	Severe Thunderstorm Warning	MHX	Carteret, Craven, Pamlico	24 min
Apr 18, 12:23 PM EDT	Special Marine Warning	MHX		67 min
Apr 18, 12:30 PM EDT	Special Weather Statement	MHX	Hyde	15 min
Apr 18, 12:33 PM EDT	Special Weather Statement	MHX	Carteret	42 min
Apr 18, 12:43 PM EDT	Severe Thunderstorm Warning	MHX	Dare, Hyde	47 min
Apr 18, 12:52 PM EDT	Severe Thunderstorm Warning	MHX	Carteret	38 min
Apr 18, 12:57 PM EDT	Special Marine Warning	MHX		33 min
Apr 18, 1:14 PM EDT	Special Marine Warning	MHX		61 min
Apr 18, 1:16 PM EDT	Special Marine Warning	MHX		59 min
Apr 18, 1:22 PM EDT	Special Marine Warning	MHX		23 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.