Alert archive / North Carolina / Areal Flood Warnings in 2016

Areal Flood Warning 2, NWS Raleigh, NC

July 17, 20167 counties in North Carolina

NWS Raleigh, NC issued this areal flood warning at Jul 17, 2016, 12:19 AM EDT for 7 counties in North Carolina. It was in force for 9 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 17, 2016, 12:19 AM EDT (04:19 UTC)
Expired: Jul 17, 2016, 9:00 AM EDT
In force: 9 hr
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

Counties Chatham County, NC, Durham County, NC, Franklin County, NC, Harnett County, NC, Johnston County, NC, Orange County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 29 km from the middle of the area, began a volume at 04:20 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 00:00Z, 4.3 hours before the alert went out and 106 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: 258 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1119 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood warning went out at Jul 16, 10:20 PM EDT, 1 hour 59 minutes earlier.

Area forecast discussion, Jul 16, 10:20 PM EDT, 1 hour 59 minutes before

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Hazardous weather outlook, Jul 16, 3:47 AM EDT, 20 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
347 AM EDT SAT JUL 16 2016

NCZ007>011-021>028-038>043-073>078-083>086-088-089-170800-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-WAKE-
JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-ANSON-
RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
347 AM EDT SAT JUL 16 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS
AFTERNOON AND EVENING. THE MAIN THREAT WILL BE FROM DAMAGING WIND
GUSTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

STRONG STORMS ARE EXPECTED TUESDAY AND TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jul 16, 11:07 PM EDT, 1 hour 12 minutes before

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Local storm report, Jul 16, 11:22 PM EDT, 57 minutes before

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Local storm report, Jul 16, 11:24 PM EDT, 55 minutes before

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Special weather statement, Jul 16, 11:29 PM EDT, 50 minutes before

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Local storm report, Jul 16, 11:45 PM EDT, 34 minutes before

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Local storm report, Jul 17, 12:02 AM EDT, 17 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
Jul 16, 8:38 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Durham, Wake	52 min
Jul 16, 8:42 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Hoke, Moore, Scotland	64 min
Jul 16, 9:02 PM EDT	Special Weather Statement	RAH	Franklin	43 min
Jul 16, 9:08 PM EDT	Areal Flood Advisory	RAH	Franklin	112 min
Jul 16, 9:19 PM EDT	Flash Flood Warning	RAH	Chatham, Durham, Orange	2 hr
Jul 16, 9:48 PM EDT	Flash Flood Warning	RAH	Wake	3 hr
Jul 16, 9:56 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Johnston, Sampson, Wayne	64 min
Jul 16, 10:14 PM EDT	Flash Flood Warning Emergency	RAH	Durham, Wake	3 hr
Jul 16, 10:37 PM EDT	Special Weather Statement	RAH	Edgecombe, Nash, Wilson	23 min
Jul 16, 10:49 PM EDT	Areal Flood Advisory	RAH	Edgecombe, Franklin, Johnston, Nash, Wayne, Wilson	3 hr
Jul 16, 11:29 PM EDT	Special Weather Statement	RAH	Edgecombe, Wilson	76 min
Jul 16, 11:58 PM EDT	Areal Flood Warning	RAH	Edgecombe, Nash, Wilson	9 hr
Jul 17, 1:09 AM EDT	Special Weather Statement	RAH	Cumberland, Hoke, Sampson, Scotland	81 min
Jul 17, 8:45 AM EDT	Areal Flood Warning	RAH	Edgecombe	9 hr
Jul 17, 9:12 AM EDT	Areal Flood Warning	RAH	Wake	3 hr
Jul 17, 9:40 AM EDT	River Flood Warning	RAH	Johnston	26 hr
Jul 17, 4:19 PM EDT	River Flood Warning	RAH	Johnston	55 hr

Nearby

Areal Flood Warnings in North Carolina, 2016 Every areal flood warning in 2016

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.