Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Newport/Morehead City, NC

August 23, 2012Onslow County, North Carolina

NWS Newport/Morehead City, NC issued this special weather statement at Aug 23, 2012, 4:04 PM EDT for Onslow County, North Carolina. It was in force for 56 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
Aug 23, 2012, 4:04 PM EDT (20:04 UTC)
Expired
Aug 23, 2012, 5:00 PM EDT
In force
56 min
Issued by
NWS Newport/Morehead City, NC

County Onslow County, NC

The radar

The Morehead City radar (KMHX), 39 km from the middle of the area, began a volume at 20:05 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.1 hours before the alert went out and 320 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2012-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1061 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2012-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1061 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Newport/Morehead City, NC wrote its last area forecast discussion before this special weather statement went out at Aug 23, 2:39 PM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Aug 23, 2:39 PM EDT, 1 hour 25 minutes before
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Hazardous weather outlook, Aug 23, 9:53 AM EDT, 6 hours 11 minutes before
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In the hours before

Special weather statement, Aug 23, 10:56 AM EDT, 5 hours 8 minutes before
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Special weather statement, Aug 23, 2:49 PM EDT, 1 hour 15 minutes before
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Special weather statement, Aug 23, 3:52 PM EDT, 12 minutes before
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Special weather statement, Aug 23, 3:58 PM EDT, 6 minutes before
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Special weather statement, Aug 23, 4:04 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 10:56 AM EDTSpecial Weather StatementMHXDare94 min
Aug 23, 1:39 PM EDTSpecial Marine WarningMHX21 min
Aug 23, 2:49 PM EDTSpecial Weather StatementMHXOnslow56 min
Aug 23, 3:52 PM EDTSpecial Weather StatementMHXHyde53 min
Aug 23, 3:58 PM EDTSpecial Weather StatementMHXDuplin62 min
Aug 23, 5:06 PM EDTSpecial Weather StatementMHXBeaufort54 min
Aug 23, 5:09 PM EDTSpecial Weather StatementMHXDuplin, Lenoir66 min

Nearby

Special Weather Statements in North Carolina, 2012Every special weather statement in 2012

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.