Alert archive / North Carolina / Areal Flood Advisories in 2021

Areal Flood Advisory 9, NWS Raleigh, NC

June 2, 20214 counties in North Carolina

NWS Raleigh, NC issued this areal flood advisory at Jun 2, 2021, 4:11 PM EDT for 4 counties in North Carolina. It was in force for 49 min.

The area

The counties it named.

The facts

Issued: Jun 2, 2021, 4:11 PM EDT (20:11 UTC)
Expired: Jun 2, 2021, 5:00 PM EDT
In force: 49 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon

Counties Chatham County, NC, Durham County, NC, Granville County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 47 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 222 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: 614 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 areal flood advisory went out at Jun 2, 3:30 PM EDT, 41 minutes earlier.

Area forecast discussion, Jun 2, 3:30 PM EDT, 41 minutes before

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Hazardous weather outlook, Jun 2, 3:46 PM EDT, 25 minutes before

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In the hours before

Special weather statement, Jun 2, 2:11 PM EDT, 2 hours before

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Special weather statement, Jun 2, 3:11 PM EDT, 1 hour before

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Special weather statement, Jun 2, 3:14 PM EDT, 57 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 2, 2:11 PM EDT	Special Weather Statement	RAH	Hoke, Moore, Scotland	64 min
Jun 2, 2:34 PM EDT	Areal Flood Advisory	RAH	Cumberland, Harnett, Hoke, Lee, Moore, Richmond and 1 more	56 min
Jun 2, 3:11 PM EDT	Special Weather Statement	RAH	Chatham, Harnett, Lee, Moore	64 min
Jun 2, 3:14 PM EDT	Special Weather Statement	RAH	Wayne	46 min
Jun 2, 5:33 PM EDT	Special Weather Statement	RAH	Edgecombe, Wilson	57 min
Jun 2, 6:04 PM EDT	Special Weather Statement	RAH	Johnston, Sampson	56 min
Jun 2, 6:29 PM EDT	Special Weather Statement	RAH	Edgecombe	76 min
Jun 2, 6:42 PM EDT	Areal Flood Advisory	RAH	Edgecombe	8 hr
Jun 2, 7:08 PM EDT	Special Weather Statement	RAH	Johnston, Wayne, Wilson	82 min
Jun 2, 7:24 PM EDT	Areal Flood Advisory	RAH	Johnston, Wayne, Wilson	7 hr

Nearby

Areal Flood Advisories in North Carolina, 2021 Every areal flood advisory in 2021

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.