Alert archive / North Carolina / Flash Flood Warnings in 2010

Flash Flood Warning 44, NWS Raleigh, NC

July 27, 2010Chatham County, Lee County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jul 27, 2010, 1:50 PM EDT for Chatham County, Lee County, North Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 27, 2010, 1:50 PM EDT (17:50 UTC)
Expired
Jul 27, 2010, 4:45 PM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Flood severity
None

Counties Chatham County, NC, Lee County, NC

The radar

The Raleigh/Durham radar (KRAX), 66 km from the middle of the area, began a volume at 17:50 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.8 hours before the alert went out and 83 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, Greensboro/Hi Pt, NC at 12:00Z on 2010-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1083 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, Greensboro/Hi Pt, NC at 12:00Z on 2010-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
1083 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 9:24 PM EDTSpecial Weather StatementRAHRichmond51 min
Jul 26, 9:43 PM EDTSpecial Weather StatementRAHAnson47 min
Jul 26, 10:03 PM EDTAreal Flood AdvisoryRAHAnson62 min
Jul 26, 10:13 PM EDTSpecial Weather StatementRAHStanly62 min
Jul 26, 10:26 PM EDTSpecial Weather StatementRAHMontgomery64 min
Jul 26, 11:49 PM EDTSpecial Weather StatementRAHDavidson, Forsyth, Guilford, Randolph71 min
Jul 27, 12:28 AM EDTAreal Flood AdvisoryRAHWarren2 hr
Jul 27, 12:37 AM EDTSpecial Weather StatementRAHDavidson, Forsyth, Guilford, Randolph83 min
Jul 27, 9:20 AM EDTSpecial Weather StatementRAHCumberland, Hoke25 min
Jul 27, 9:40 AM EDTAreal Flood AdvisoryRAHHoke3 hr
Jul 27, 10:30 AM EDTSpecial Weather StatementRAHHoke, Scotland60 min
Jul 27, 12:18 PM EDTAreal Flood AdvisoryRAHWake3 hr
Jul 27, 12:46 PM EDTFlash Flood WarningRAHWake2 hr
Jul 27, 1:35 PM EDTAreal Flood AdvisoryRAHChatham, Harnett, Lee2 hr
Jul 27, 2:13 PM EDTSpecial Weather StatementRAHDavidson, Forsyth, Guilford, Randolph62 min
Jul 27, 2:20 PM EDTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford55 min
Jul 27, 2:33 PM EDTSpecial Weather StatementRAHAlamance57 min
Jul 27, 2:42 PM EDTFlash Flood WatchRAHAlamance, Anson, Chatham, Cumberland, Durham, Edgecombe and 20 more8 hr
Jul 27, 2:48 PM EDTAreal Flood AdvisoryRAHDavidson, Forsyth, Guilford, Randolph2 hr
Jul 27, 2:51 PM EDTFlash Flood WarningRAHGuilford114 min
Jul 27, 3:12 PM EDTSpecial Weather StatementRAHChatham63 min
Jul 27, 3:38 PM EDTAreal Flood AdvisoryRAHChatham, Randolph3 hr
Jul 27, 5:25 PM EDTSpecial Weather StatementRAHRichmond65 min

Nearby

Flash Flood Warnings in North Carolina, 2010Every flash flood warning in 2010

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.