Alert archive / North Carolina / Special Weather Statements in 2016

Special Weather Statement, NWS Raleigh, NC

August 5, 2016Durham County, Orange County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 5, 2016, 12:54 AM EDT for Durham County, Orange County, North Carolina. It was in force for 81 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 5, 2016, 12:54 AM EDT (04:54 UTC)
Expired: Aug 5, 2016, 2:15 AM EDT
In force: 81 min
Issued by: NWS Raleigh, NC

Counties Durham County, NC, Orange County, NC

The radar

The Raleigh/Durham radar (KRAX), 58 km from the middle of the area, began a volume at 04:58 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, 4.9 hours before the alert went out and 92 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: 45 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 4, 11:05 PM EDT, 1 hour 49 minutes earlier.

Area forecast discussion, Aug 4, 11:05 PM EDT, 1 hour 49 minutes before

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Hazardous weather outlook, Aug 4, 7:53 PM EDT, 5 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
753 PM EDT THU AUG 4 2016

NCZ007>011-021>028-038>043-073>078-083>086-088-089-060000-
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-
753 PM EDT THU AUG 4 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 4, 10:38 PM EDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1038 PM EDT THU AUG 4 2016

NCZ041-050315-
WAKE NC-
1038 PM EDT THU AUG 4 2016

...SHOWERS AND THUNDERSTORMS WILL PRODUCE TORRENTIAL RAINFALL
OVER CARY AND MORRISVILLE THROUGH 1115 PM EDT...

AT 1035 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY SHOWERS AND THUNDERSTORMS OVER WEST RALEIGH AND
PORTIONS OF CARY...MOVING NORTHWEST AT 10 MPH.

RAINFALL RATES OF ONE TO TWO INCHES PER HOUR CAN BE EXPECTED AS THIS
ACTIVITY MOVES SLOWLY NORTHWEST THROUGH CARY...MORRISVILLE...AND RDU
INTERNATIONAL AIRPORT.

LOCATIONS IMPACTED INCLUDE...
CARY...RDU INTERNATIONAL...MORRISVILLE...AND UMSTEAD STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL WILL SIGNIFICANTLY REDUCE VISIBILITY AND RESULT
IN STANDING WATER ON AREA ROADS. DRIVERS ARE URGED TO SLOW DOWN AND
USE EXTRA CAUTION TO AVOID HYDROPLANING. MINOR FLOODING CAN BE
EXPECTED IN PORTIONS OF CARY AND MORRISVILLE OVER THE NEXT HOUR.

&&

LAT...LON 3574 7862 3567 7882 3583 7891 3587 7891
      3587 7883 3592 7881 3593 7880 3592 7876
      3593 7875 3594 7873 3595 7873
TIME...MOT...LOC 0230Z 155DEG 7KT 3573 7874

VINCENT

Special weather statement, Aug 5, 12:54 AM EDT, 0 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
Aug 4, 10:38 PM EDT	Special Weather Statement	RAH	Wake	37 min
Aug 5, 5:37 PM EDT	Special Weather Statement	RAH	Moore	23 min
Aug 5, 5:40 PM EDT	Special Weather Statement	RAH	Hoke	50 min
Aug 5, 5:44 PM EDT	Special Weather Statement	RAH	Harnett	46 min
Aug 5, 6:05 PM EDT	Special Weather Statement	RAH	Moore	40 min
Aug 5, 6:16 PM EDT	Areal Flood Advisory	RAH	Forsyth	119 min

Nearby

Special Weather Statements in North Carolina, 2016 Every special weather statement 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.