Alert archive / North Carolina / Winter Storm Watches in 2015

Winter Storm Watch 4, NWS Raleigh, NC

February 24, 201531 counties in North Carolina

NWS Raleigh, NC issued this winter storm watch at Feb 24, 2015, 4:38 PM EST for 31 counties in North Carolina. It took effect at Feb 25, 2015, 6:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 24, 2015, 4:38 PM EST (21:38 UTC)
In effect from: Feb 25, 2015, 6:00 PM EST
Expired: Feb 25, 2015, 4:28 AM EST
In force
Issued by: NWS Raleigh, NC

All 31 counties

Alamance County, NC, Anson County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 45 km from the middle of the area, began a volume at 21:39 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, 9.6 hours before the alert went out and 93 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 640 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm watch 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 winter storm watch went out at Feb 24, 3:34 PM EST, 1 hour 4 minutes earlier.

Area forecast discussion, Feb 24, 3:34 PM EST, 1 hour 4 minutes before

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Hazardous weather outlook, Feb 24, 4:11 PM EST, 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
411 PM EST TUE FEB 24 2015

NCZ007>011-021>028-038>043-073>078-083>086-088-089-252115-
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-
411 PM EST TUE FEB 24 2015

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON EST WEDNESDAY...
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.
   WINTER STORM WATCH.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Feb 24, 4:08 PM EST, 30 minutes before

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Local storm report, Feb 24, 4:13 PM EST, 25 minutes before

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Local storm report, Feb 24, 4:14 PM EST, 24 minutes before

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Local storm report, Feb 24, 4:17 PM EST, 21 minutes before

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Local storm report, Feb 24, 4:27 PM EST, 11 minutes before

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Local storm report, Feb 24, 4:34 PM EST, 4 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
Feb 24, 4:22 AM EST	Winter Weather Advisory	RAH	Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more	31 hr
Feb 24, 4:38 PM EST	Winter Weather Advisory	RAH	Alamance, Anson, Davidson, Forsyth, Guilford, Montgomery and 4 more	19 hr

Nearby

Winter Storm Watches in North Carolina, 2015 Every winter storm watch in 2015

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.