Alert archive / North Carolina / Special Weather Statements in 2011
Special Weather Statement, NWS Raleigh, NC
NWS Raleigh, NC issued this special weather statement at Jul 30, 2011, 7:44 PM EDT for Granville County, North Carolina. It was in force for 61 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 30, 2011, 7:44 PM EDT (23:44 UTC)
- Expired
- Jul 30, 2011, 8:45 PM EDT
- In force
- 61 min
- Issued by
- NWS Raleigh, NC
County Granville County, NC
The radar
The Raleigh/Durham radar (KRAX), 89 km from the middle of the area, began a volume at 23:44 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
Roanoke, VA (KRNK), launched 12:00Z, 11.7 hours before the alert went out and 114 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.
- Mixed-layer CAPE
- 841 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 30, 3:30 PM EDT, 4 hours 14 minutes earlier.
Area forecast discussion, Jul 30, 3:30 PM EDT, 4 hours 14 minutes before
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</html>Hazardous weather outlook, Jul 30, 4:08 AM EDT, 15 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RALEIGH NC 408 AM EDT SAT JUL 30 2011 NCZ008>011-024>028-040>043-073>078-083>086-088-089-310815- GRANVILLE-VANCE-WARREN-HALIFAX-ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE- CHATHAM-WAKE-JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT- WAYNE-ANSON-RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON- 408 AM EDT SAT JUL 30 2011 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND MAY PERSIST INTO TONIGHT. AN ISOLATED SEVERE THUNDERSTORM IS POSSIBLE WITH A PRIMARY THREAT OF DAMAGING DOWNBURST WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ON SUNDAY AND SUNDAY NIGHT. A FEW OF THESE STORMS MAY PRODUCE STRONG DOWNBURST WINDS AND VERY HEAVY RAIN THAT COULD PRODUCE LOCALIZED FLOODING. NCZ007-021>023-038-039-310815- PERSON-FORSYTH-GUILFORD-ALAMANCE-DAVIDSON-RANDOLPH- 408 AM EDT SAT JUL 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. HIGH TEMPERATURES OF 95 TO 100 DEGREES ARE EXPECTED TODAY. PEOPLE ARE ADVISED TO LIMIT TIME OUTDOORS AND IN THE SUN. SPEND AS MUCH TIME AS POSSIBLE IN AIR CONDITIONING...AND DRINK PLENTY OF WATER. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND MAY PERSIST INTO TONIGHT. AN ISOLATED SEVERE THUNDERSTORM IS POSSIBLE WITH A PRIMARY THREAT OF DAMAGING DOWNBURST WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ON SUNDAY AND SUNDAY NIGHT. A FEW OF THESE STORMS MAY PRODUCE STRONG DOWNBURST WINDS AND VERY HEAVY RAIN THAT COULD PRODUCE LOCALIZED FLOODING. BLAES
In the hours before
Special weather statement, Jul 30, 7:31 PM EDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 731 PM EDT SAT JUL 30 2011 NCZ025-041-310030- DURHAM-WAKE- 731 PM EDT SAT JUL 30 2011 ...A STRONG THUNDERSTORM WILL AFFECT EASTERN DURHAM AND NORTHERN WAKE COUNTIES THROUGH 830 PM... AT 727 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER RDU INTERNATIONAL AIRPORT EXTENDING EAST... ALONG I-540 THROUGH NORTH RALEIGH... AND NORTH ALONG HIGHWAY 50 OR CREEDMOOR ROAD NEAR FALLS LAKE... MOVING SOUTHEAST AT 10 MPH. SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...RDU INTERNATIONAL AIRPORT THROUGH NORTH RALEIGH. VERY HEAVY RAIN WITH RAINFALL RATES IN EXCESS OF 2 INCHES PER HOUR WILL FALL. MOST AREAS WILL SEE RAIN FOR AROUND 30 MINUTES. FREQUENT LIGHTNING AND GUSTY WIND TO 40 MPH WILL OCCUR. SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. IF YOU SEE LIGHTNING OR HEAR THUNDER...YOU ARE AT RISK. TAKE SHELTER INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER IN A BUILDING A VEHICLE PROVIDES SAFETY FROM LIGHTNING. && LAT...LON 3590 7837 3566 7852 3586 7887 3602 7877 TIME...MOT...LOC 2327Z 297DEG 7KT 3590 7872 BADGETT
Special weather statement, Jul 30, 7:44 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
744 PM EDT SAT JUL 30 2011
NCZ007-008-310045-
GRANVILLE-PERSON-
744 PM EDT SAT JUL 30 2011
...A STRONG THUNDERSTORM WILL MOVE ACROSS PERSON AND NORTHERN
GRANVILLE COUNTIES THROUGH 845 PM EDT...
AT 744 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
BETHEL HILL...OR ABOUT OVER VIRGILINA...MOVING SOUTHEAST AT 20 MPH.
SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...OAK HILL...STOVALL...
OXFORD.
HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 40 TO 50 MPH.
HEAVY RAINFALL AND MINOR FLOODING.
SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. STRONG WINDS ARE
CAPABLE OF KNOCKING DOWN SMALL TREES AND BLOWING AROUND TRASH CANS...
POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.
&&
LAT...LON 3654 7845 3653 7845 3652 7849 3649 7851
3623 7851 3631 7881 3644 7893 3655 7888
TIME...MOT...LOC 2344Z 301DEG 16KT 3650 7881
22The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 7:31 PM EDT | Special Weather Statement | RAH | Wake | 59 min |
Nearby
Special Weather Statements in North Carolina, 2011Every 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.