Alert archive / North Carolina / Special Weather Statements in 2013

Special Weather Statement, NWS Raleigh, NC

May 6, 2013Granville County, North Carolina

NWS Raleigh, NC issued this special weather statement at May 6, 2013, 8:49 PM EDT for Granville County, North Carolina. It was in force for 56 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: May 6, 2013, 8:49 PM EDT (00:49 UTC)
Expired: May 6, 2013, 9:45 PM EDT
In force: 56 min
Issued by: NWS Raleigh, NC

County Granville County, NC

The radar

The Raleigh/Durham radar (KRAX), 75 km from the middle of the area, began a volume at 00:51 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, 0.8 hours before the alert went out and 112 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: 887 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

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 May 6, 8:00 PM EDT, 49 minutes earlier.

Area forecast discussion, May 6, 8:00 PM EDT, 49 minutes before

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Hazardous weather outlook, May 6, 8:38 AM EDT, 12 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
838 AM EDT MON MAY 6 2013

NCZ009>011-026>028-042-043-078-089-071245-
VANCE-WARREN-HALIFAX-FRANKLIN-NASH-EDGECOMBE-JOHNSTON-WILSON-WAYNE-
SAMPSON-
838 AM EDT MON MAY 6 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
DEVELOP THIS AFTERNOON...IN ADVANCE OF AN UPPER LEVEL LOW SLOWLY
APPROACHING THE REGION FROM THE WEST. LOCALLY HEAVY RAINFALL AND
ISOLATED URBAN FLOODING WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

NCZ007-008-024-025-040-041-075>077-083>086-088-071245-
PERSON-GRANVILLE-ORANGE-DURHAM-CHATHAM-WAKE-MOORE-LEE-HARNETT-ANSON-
RICHMOND-SCOTLAND-HOKE-CUMBERLAND-
838 AM EDT MON MAY 6 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON...IN ADVANCE OF AN UPPER LEVEL LOW SLOWLY APPROACHING
THE REGION FROM THE WEST. LOCALLY HEAVY RAINFALL AND ISOLATED
URBAN FLOODING WILL BE POSSIBLE.

ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE ALONG AND WEST OF
THE HIGHWAY 1 CORRIDOR THIS AFTERNOON...WITH A PRIMARY THREAT OF
LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

NCZ021>023-038-039-073-074-071245-
FORSYTH-GUILFORD-ALAMANCE-DAVIDSON-RANDOLPH-STANLY-MONTGOMERY-
838 AM EDT MON MAY 6 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
DEVELOP THIS AFTERNOON...IN ADVANCE OF AN UPPER LEVEL LOW SLOWLY
APPROACHING THE REGION FROM THE WEST. LOCALLY HEAVY RAINFALL AND
ISOLATED FLASH FLOODING WILL BE POSSIBLE...ESPECIALLY IN URBAN
AREAS SUCH AS GREENSBORO...WINSTON SALEM...ASHEBORO...AND
LEXINGTON.

ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE ALONG AND WEST OF
THE HIGHWAY 1 CORRIDOR THIS AFTERNOON...WITH A PRIMARY THREAT OF
LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

VINCENT

In the hours before

Special weather statement, May 6, 5:22 PM EDT, 3 hours 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
522 PM EDT MON MAY 6 2013

NCZ042-062145-
JOHNSTON-
522 PM EDT MON MAY 6 2013

...A STRONG THUNDERSTORM WILL MOVE ACROSS JOHNSTON COUNTY THROUGH 545
PM EDT...

AT 522 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
FLOWERS...OR ABOUT 6 MILES NORTH OF SMITHFIELD...MOVING NORTH AT 10
MPH.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...FLOWERS.

HAZARDS INCLUDE...
HALF INCH DIAMETER SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.
DEADLY CLOUD TO GROUND LIGHTNING.
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.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3555 7820 3549 7841 3567 7851 3571 7847
      3575 7838 3578 7825
TIME...MOT...LOC 2122Z 167DEG 7KT 3560 7834

ELLIS

Special weather statement, May 6, 5:29 PM EDT, 3 hours 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
529 PM EDT MON MAY 6 2013

NCZ008-009-026-041-042-062230-
FRANKLIN-GRANVILLE-JOHNSTON-VANCE-WAKE-
529 PM EDT MON MAY 6 2013

...STRONG THUNDERSTORMS WILL MOVE ACROSS JOHNSTON...WAKE...VANCE...
GRANVILLE AND FRANKLIN COUNTIES THROUGH 630 PM EDT...

AT 529 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM KITTRELL TO 7 MILES SOUTH
OF WENDELL...OR ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF
HENDERSON TO 12 MILES NORTH OF SMITHFIELD...MOVING SOUTH AT 10 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...FRANKLINTON...
YOUNGSVILLE...AND...ROLESVILLE...WAKE FOREST.

HAZARDS INCLUDE...
PENNY SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

THIS INCLUDES INTERSTATE 85 BETWEEN EXITS 202 AND 218.
THIS INCLUDES HIGHWAY 264 BETWEEN EXITS 425 AND 429.

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.

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.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3640 7831 3571 7827 3568 7846 3634 7864
TIME...MOT...LOC 2129Z 005DEG 8KT 3626 7849 3567 7837

ELLIS

Special weather statement, May 6, 5:31 PM EDT, 3 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
531 PM EDT MON MAY 6 2013

NCZ008-009-026-041-042-062230-
FRANKLIN-GRANVILLE-JOHNSTON-VANCE-WAKE-
531 PM EDT MON MAY 6 2013

...STRONG THUNDERSTORMS WILL MOVE ACROSS JOHNSTON...WAKE...VANCE...
GRANVILLE AND FRANKLIN COUNTIES THROUGH 630 PM EDT...

AT 529 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM KITTRELL TO 7 MILES SOUTH
OF WENDELL...OR ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF
HENDERSON TO 12 MILES NORTH OF SMITHFIELD...MOVING NORTH AT 10 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...FRANKLINTON...
YOUNGSVILLE...AND...ROLESVILLE...WAKE FOREST.

HAZARDS INCLUDE...
PENNY SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

THIS INCLUDES INTERSTATE 85 BETWEEN EXITS 202 AND 218.
THIS INCLUDES HIGHWAY 264 BETWEEN EXITS 425 AND 429.

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.

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.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3640 7831 3571 7827 3568 7846 3634 7864
TIME...MOT...LOC 2129Z 005DEG 8KT 3626 7849 3567 7837

ELLIS

Special weather statement, May 6, 7:22 PM EDT, 1 hour 27 minutes before

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Special weather statement, May 6, 7:31 PM EDT, 1 hour 18 minutes before

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Special weather statement, May 6, 8:49 PM 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
May 6, 9:22 PM EDT	Special Weather Statement	RAH	Forsyth	53 min
May 6, 10:03 PM EDT	Special Weather Statement	RAH	Randolph	57 min
May 7, 1:24 PM EDT	Special Weather Statement	RAH	Durham	51 min
May 7, 1:41 PM EDT	Areal Flood Advisory	RAH	Guilford	109 min
May 7, 2:09 PM EDT	Special Weather Statement	RAH	Durham	51 min
May 7, 2:12 PM EDT	Special Weather Statement	RAH	Granville	63 min
May 7, 3:52 PM EDT	Special Weather Statement	RAH	Moore	23 min
May 7, 5:02 PM EDT	Special Weather Statement	RAH	Granville	43 min
May 7, 5:30 PM EDT	Special Weather Statement	RAH	Chatham	45 min
May 7, 5:43 PM EDT	Special Weather Statement	RAH	Johnston	47 min
May 7, 6:13 PM EDT	Special Weather Statement	RAH	Wake	62 min
May 7, 6:51 PM EDT	Special Weather Statement	RAH	Stanly	39 min
May 7, 7:00 PM EDT	Special Weather Statement	RAH	Montgomery	45 min
May 7, 7:29 PM EDT	Special Weather Statement	RAH	Stanly	46 min

Nearby

Special Weather Statements in North Carolina, 2013 Every special weather statement in 2013

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.