Alert archive / North Carolina / Flash Flood Warnings in 2010

Flash Flood Warning 30, NWS Raleigh, NC

June 25, 2010Sampson County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jun 25, 2010, 7:26 PM EDT for Sampson County, North Carolina. It was in force for 2 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: Jun 25, 2010, 7:26 PM EDT (23:26 UTC)
Expired: Jun 25, 2010, 9:51 PM EDT
In force: 2 hr
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

County Sampson County, NC

The radar

The Raleigh/Durham radar (KRAX), 76 km from the middle of the area, began a volume at 23:30 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, 11.4 hours before the alert went out and 138 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: 2740 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 731 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this flash flood warning went out at Jun 25, 2:50 PM EDT, 4 hours 36 minutes earlier.

Area forecast discussion, Jun 25, 2:50 PM EDT, 4 hours 36 minutes before

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Hazardous weather outlook, Jun 25, 10:37 AM EDT, 8 hours 49 minutes before

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In the hours before

Special weather statement, Jun 25, 6:17 PM EDT, 1 hour 9 minutes before

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Special weather statement, Jun 25, 7:20 PM EDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 8:03 PM EDT	Special Weather Statement	RAH	Forsyth, Guilford	57 min
Jun 24, 8:20 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	40 min
Jun 24, 9:02 PM EDT	Special Weather Statement	RAH	Guilford	58 min
Jun 25, 3:23 AM EDT	Heat Advisory	RAH	Cumberland, Harnett, Hoke, Johnston, Sampson, Scotland and 2 more	16 hr
Jun 25, 6:17 PM EDT	Special Weather Statement	RAH	Bladen	58 min
Jun 25, 6:25 PM EDT	Severe Thunderstorm Warning	RAH	Sampson	65 min
Jun 25, 7:01 PM EDT	Areal Flood Advisory	RAH	Sampson	47 min
Jun 25, 7:20 PM EDT	Special Weather Statement	RAH	Cumberland	40 min
Jun 25, 7:36 PM EDT	Special Weather Statement	RAH	Sampson	39 min
Jun 25, 7:48 PM EDT	Special Weather Statement	RAH	Richmond, Scotland	57 min
Jun 25, 7:56 PM EDT	Severe Thunderstorm Warning	RAH	Sampson	36 min

Nearby

Flash Flood Warnings in North Carolina, 2010 Every 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.