Alert archive / North Carolina / Areal Flood Advisories in 2011

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

August 14, 2011Beaufort County, Hyde County, North Carolina

NWS Newport/Morehead City, NC issued this areal flood advisory at Aug 14, 2011, 6:49 PM EDT for Beaufort County, Hyde County, North Carolina. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Aug 14, 2011, 6:49 PM EDT (22:49 UTC)
Expired
Aug 14, 2011, 7:46 PM EDT
In force
57 min
Issued by
NWS Newport/Morehead City, NC
Area
Storm-based polygon

Counties Beaufort County, NC, Hyde County, NC

The radar

The Morehead City radar (KMHX), 82 km from the middle of the area, began a volume at 22:50 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.8 hours before the alert went out and 293 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, Wallops Is Stn, VA at 12:00Z on 2011-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 341 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, Wallops Is Stn, VA at 12:00Z on 2011-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.19395878Sfc1 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
341 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 3:05 PM EDTSpecial Weather StatementMHXTyrrell55 min
Aug 14, 3:43 PM EDTSpecial Weather StatementMHXWashington62 min
Aug 14, 4:20 PM EDTSpecial Weather StatementMHXBeaufort55 min
Aug 14, 4:22 PM EDTSpecial Weather StatementMHXOnslow53 min
Aug 14, 4:42 PM EDTSpecial Weather StatementMHXWashington63 min
Aug 14, 4:44 PM EDTSpecial Weather StatementMHXPamlico61 min
Aug 14, 5:00 PM EDTSpecial Weather StatementMHXCraven45 min
Aug 14, 5:42 PM EDTSpecial Weather StatementMHXDare63 min
Aug 14, 6:21 PM EDTAreal Flood AdvisoryMHXOnslow84 min

Nearby

Areal Flood Advisories in North Carolina, 2011Every areal flood advisory in 2011

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.