Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Raleigh, NC

July 21, 2011Moore County, North Carolina

NWS Raleigh, NC issued this special weather statement at Jul 21, 2011, 2:00 PM EDT for Moore County, North Carolina. It was in force for 60 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: Jul 21, 2011, 2:00 PM EDT (18:00 UTC)
Expired: Jul 21, 2011, 3:00 PM EDT
In force: 60 min
Issued by: NWS Raleigh, NC

County Moore County, NC

The radar

The Raleigh/Durham radar (KRAX), 109 km from the middle of the area, began a volume at 18:01 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, 6.0 hours before the alert went out and 80 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: 1698 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1066 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 21, 1:30 PM EDT, 30 minutes earlier.

Area forecast discussion, Jul 21, 1:30 PM EDT, 30 minutes before

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Hazardous weather outlook, Jul 21, 11:41 AM EDT, 2 hours 19 minutes before

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In the hours before

Special weather statement, Jul 21, 2:00 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
200 PM EDT THU JUL 21 2011

NCZ075-211900-
MOORE-
200 PM EDT THU JUL 21 2011

...A STRONG THUNDERSTORM WITH HEAVY RAINS WEST OF ROBBINS IN MOORE
COUNTY...

AT 157 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM WEST
ROBBINS...OR ABOUT 13 MILES WEST OF CARTHAGE...NEARLY STATIONARY.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...NORTHWEST MOORE
COUNTY

HAZARDS INCLUDE...
HEAVY RAINFALL AND MINOR FLOODING.

MOTORISTS SHOULD BE ON THE ALERT FOR POSSIBLE PONDING OF WATER ON
LOCAL ROADS.

&&

LAT...LON 3549 7962 3536 7948 3526 7968 3533 7972
      3543 7975
TIME...MOT...LOC 1757Z 240DEG 4KT 3538 7964

14

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:04 PM EDT	Special Weather Statement	RAH	Durham	26 min
Jul 20, 8:53 PM EDT	Special Weather Statement	RAH	Wake	22 min
Jul 21, 2:29 PM EDT	Special Weather Statement	RAH	Harnett	31 min
Jul 21, 2:59 PM EDT	Excessive Heat Watch	RAH	Anson, Chatham, Cumberland, Durham, Edgecombe, Franklin and 20 more	7 hr
Jul 21, 2:59 PM EDT	Excessive Heat Warning	RAH	Anson, Chatham, Cumberland, Durham, Edgecombe, Franklin and 19 more	53 hr
Jul 21, 2:59 PM EDT	Heat Advisory	RAH	Alamance, Anson, Chatham, Davidson, Durham, Forsyth and 12 more	29 hr
Jul 21, 3:43 PM EDT	Special Weather Statement	RAH	Stanly	32 min
Jul 21, 3:50 PM EDT	Severe Thunderstorm Warning	RAH	Montgomery, Stanly	40 min
Jul 21, 4:02 PM EDT	Special Weather Statement	RAH	Johnston	28 min
Jul 21, 4:03 PM EDT	Special Weather Statement	RAH	Sampson	27 min
Jul 21, 4:12 PM EDT	Areal Flood Advisory	RAH	Montgomery, Stanly	78 min
Jul 21, 4:30 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Montgomery, Richmond, Stanly	24 min
Jul 21, 4:51 PM EDT	Special Weather Statement	RAH	Wayne	24 min
Jul 21, 4:58 PM EDT	Special Weather Statement	RAH	Cumberland	32 min
Jul 21, 6:18 PM EDT	Special Weather Statement	RAH	Vance	27 min

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.