Alert archive / North Carolina / Mesoscale Discussions in 2007

Mesoscale Discussion 2137

October 25, 20079 counties in North Carolina

The Storm Prediction Center issued this mesoscale discussion at Oct 25, 2007, 3:38 PM EDT for 9 counties in North Carolina. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued
Oct 25, 2007, 3:38 PM EDT (19:38 UTC)
Expired
Oct 25, 2007, 5:15 PM EDT
In force
97 min
Issued by
the Storm Prediction Center

Counties Beaufort County, NC, Bladen County, NC, Craven County, NC, Duplin County, NC, Jones County, NC, Lenoir County, NC, Onslow County, NC, Pender County, NC, Pitt County, NC

The radar

The Morehead City radar (KMHX), 63 km from the middle of the area, began a volume at 19:41 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, 7.6 hours before the alert went out and 62 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, Newport, NC at 12:00Z on 2007-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1137 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, Newport, NC at 12:00Z on 2007-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1137 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
679 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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Nearby

Mesoscale Discussions in North Carolina, 2007Every mesoscale discussion in 2007

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.