Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Wilmington, NC

August 20, 2011New Hanover County, North Carolina

NWS Wilmington, NC issued this special weather statement at Aug 20, 2011, 4:04 PM EDT for New Hanover 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: Aug 20, 2011, 4:04 PM EDT (20:04 UTC)
Expired: Aug 20, 2011, 5:00 PM EDT
In force: 56 min
Issued by: NWS Wilmington, NC

County New Hanover County, NC

The radar

The Wilmington radar (KLTX), 48 km from the middle of the area, began a volume at 20:04 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.1 hours before the alert went out and 235 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: 748 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1183 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 41 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 Wilmington, NC wrote its last area forecast discussion before this special weather statement went out at Aug 20, 3:25 PM EDT, 39 minutes earlier.

Area forecast discussion, Aug 20, 3:25 PM EDT, 39 minutes before

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Hazardous weather outlook, Aug 20, 3:47 PM EDT, 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON NC
347 PM EDT SAT AUG 20 2011

AMZ250-252-254-256-NCZ087-096-099-105>107-109-110-SCZ053>056-212000-
SURF CITY TO CAPE FEAR NC OUT 20 NM-
CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20 NM-
LITTLE RIVER INLET TO MURRELLS INLET SC OUT 20 NM-
MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT 20 NM-ROBESON-BLADEN-
COLUMBUS-INLAND PENDER-COASTAL PENDER-INLAND NEW HANOVER-
INLAND BRUNSWICK-COASTAL BRUNSWICK-INLAND HORRY-COASTAL HORRY-
INLAND GEORGETOWN-COASTAL GEORGETOWN-
347 PM EDT SAT AUG 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ADJACENT COASTAL
WATERS...SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ108-212000-
COASTAL NEW HANOVER-
347 PM EDT SAT AUG 20 2011

...MODERATE RISK OF RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

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

   MODERATE RISK OF RIP CURRENTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

SCZ017-023-024-032-033-039-212000-
MARLBORO-DARLINGTON-DILLON-FLORENCE-MARION-WILLIAMSBURG-
347 PM EDT SAT AUG 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SLOW MOVING THUNDERSTORMS WILL BE CAPABLE OF PRODUCING LOCALIZED
STANDING WATER AND MINOR FLOODING OF ROADWAYS...DITCHES AND LOW-
LYING AREAS THROUGH THE EVENING HOURS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

8

In the hours before

Local storm report, Aug 20, 10:37 AM EDT, 5 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
1037 AM EDT SAT AUG 20 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     TSTM WND DMG     5 E KELLY               34.47N  78.23W
08/19/2011                   BLADEN             NC   NWS EMPLOYEE

            LARGE LIMB DOWN ON HWY 210 ONE MILE WEST OF HWY 11.

&&

EVENT NUMBER ILM1100509

43

Special weather statement, Aug 20, 1:25 PM EDT, 2 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
125 PM EDT SAT AUG 20 2011

SCZ039-201830-
WILLIAMSBURG-
125 PM EDT SAT AUG 20 2011

...A STRONG THUNDERSTORM WILL MOVE ACROSS WILLIAMSBURG COUNTY THROUGH
230 PM EDT...

AT 125 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
TRIO...MOVING EAST AT 5 MPH.

SOME LOCATIONS IMPACTED INCLUDE EARLE...TRIO...AND HIGHWAY 521
BETWEEN ANDREWS AND SALTERS.

HAZARDS INCLUDE...
SMALL HAIL.
GUSTY WINDS OF 30 TO 40 MPH.
HEAVY RAINFALL AND MINOR FLOODING.

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 3341 7976 3354 7977 3360 7961 3350 7956
      3346 7957 3345 7959 3343 7959 3340 7962
TIME...MOT...LOC 1725Z 263DEG 4KT 3351 7969

III

Special weather statement, Aug 20, 1:57 PM EDT, 2 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
157 PM EDT SAT AUG 20 2011

SCZ039-201900-
WILLIAMSBURG-
157 PM EDT SAT AUG 20 2011

...STRONG THUNDERSTORMS WILL MOVE ACROSS WILLIAMSBURG COUNTY THROUGH
300 PM EDT...

AT 155 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS NEAR
KINGSTREE...MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS IMPACTED INCLUDE KINGSTREE...SALTERS...
GREELEYVILLE...LANE AND HIGHWAYS 52 AND 521.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.
HEAVY RAINFALL AND MINOR FLOODING.

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 3375 7964 3360 7962 3354 7977 3351 8000
      3364 8001
TIME...MOT...LOC 1755Z 244DEG 11KT 3362 7984

III

Special weather statement, Aug 20, 3:05 PM EDT, 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
305 PM EDT SAT AUG 20 2011

SCZ032-202000-
FLORENCE-
305 PM EDT SAT AUG 20 2011

...A STRONG THUNDERSTORM WILL MOVE ACROSS FLORENCE COUNTY THROUGH 400
PM EDT...

AT 305 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
COWARD...OR ABOUT 7 MILES NORTH OF LAKE CITY...MOVING EAST AT 10 MPH.

SOME LOCATIONS IMPACTED INCLUDE LAKE CITY...EFFINGHAM...EVERGREEN...
FRIENDFIELD...HANNAH...HYMAN...NEW HOPE...PAMPLICO...COWARD AND
SCRANTON.

HAZARDS INCLUDE...
HALF INCH DIAMETER SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

FREQUENT 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 3412 7954 3380 7949 3388 7983 3405 7986
TIME...MOT...LOC 1905Z 266DEG 7KT 3396 7974

WEISS

Special weather statement, Aug 20, 3:33 PM EDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
333 PM EDT SAT AUG 20 2011

SCZ017-023-024-202030-
DARLINGTON-DILLON-MARLBORO-
333 PM EDT SAT AUG 20 2011

...STRONG THUNDERSTORMS WILL MOVE ACROSS DILLON...MARLBORO AND
DARLINGTON COUNTIES THROUGH 430 PM EDT...

AT 332 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
BROWNSVILLE AND MECHANICSVILLE...MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS IMPACTED INCLUDE DILLON...BINGHAM...BROWNSVILLE...
CLIO...DUNBAR...HAMER...LITTLE ROCK...MCCOLL...MECHANICSVILLE...
MINTURN...OAK GROVE AND SOUTH OF THE BORDER.

HAZARDS INCLUDE...
SMALL HAIL.
GUSTY WINDS OF 30 TO 40 MPH.
HEAVY RAINFALL AND MINOR FLOODING.

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 3469 7953 3445 7925 3428 7959 3430 7962
      3430 7963 3431 7967 3429 7968 3429 7970
      3435 7980
TIME...MOT...LOC 1932Z 222DEG 16KT 3435 7965

III

Special weather statement, Aug 20, 4:04 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
404 PM EDT SAT AUG 20 2011

NCZ107>109-202100-
COASTAL NEW HANOVER-INLAND BRUNSWICK-INLAND NEW HANOVER-
404 PM EDT SAT AUG 20 2011

...STRONG THUNDERSTORMS WILL MOVE ACROSS EASTERN BRUNSWICK AND
SOUTHERN NEW HANOVER COUNTIES THROUGH 500 PM EDT...

AT 403 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
SILVER LAKE...OR ABOUT 6 MILES SOUTHWEST OF WILMINGTON...MOVING NORTH
AT 5 MPH.

SOME LOCATIONS IMPACTED INCLUDE
LELAND...WILMINGTON...MASONBORO...MYRTLE GROVE...SILVER
LAKE...WOODBURN...BELVILLE...NAVASSA AND ALONG HIGHWAY 133 BETWEEN
SUNNY POINT AND LELAND.

HAZARDS INCLUDE...
HALF INCH DIAMETER SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.
HEAVY RAINFALL AND MINOR FLOODING.

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 3413 7786 3409 7794 3410 7794 3407 7797
      3409 7804 3428 7808 3423 7786
TIME...MOT...LOC 2003Z 189DEG 4KT 3414 7798

III

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 1:25 PM EDT	Special Weather Statement	ILM	Williamsburg	65 min
Aug 20, 1:57 PM EDT	Special Weather Statement	ILM	Williamsburg	63 min
Aug 20, 3:05 PM EDT	Special Weather Statement	ILM	Florence	55 min
Aug 20, 3:33 PM EDT	Special Weather Statement	ILM	Dillon	57 min
Aug 20, 4:48 PM EDT	Special Weather Statement	ILM	Horry	42 min
Aug 19, 11:01 PM EDT	Special Weather Statement	ILM	Columbus, Robeson	59 min
Aug 19, 11:28 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus, Robeson	42 min
Aug 19, 11:40 PM EDT	Areal Flood Advisory	ILM	Bladen, Columbus, Robeson	2 hr
Aug 20, 12:01 AM EDT	Special Weather Statement	ILM	Bladen, Columbus	59 min
Aug 20, 1:02 AM EDT	Special Weather Statement	ILM	Brunswick, Columbus	58 min
Aug 20, 1:41 AM EDT	Special Weather Statement	ILM	Robeson	94 min
Aug 20, 1:47 AM EDT	Areal Flood Warning	ILM	Robeson	3 hr
Aug 20, 3:14 AM EDT	Areal Flood Warning	ILM	Columbus	103 min
Aug 20, 4:35 PM EDT	Areal Flood Advisory	ILM	Brunswick, New Hanover	85 min
Aug 20, 4:40 PM EDT	Special Weather Statement	ILM	New Hanover	50 min
Aug 20, 5:26 PM EDT	Special Weather Statement	ILM	Brunswick	49 min
Aug 20, 5:48 PM EDT	Special Weather Statement	ILM	Columbus	57 min
Aug 20, 6:50 PM EDT	Areal Flood Advisory	ILM	Brunswick, Columbus	85 min
Aug 20, 6:53 PM EDT	Special Weather Statement	ILM	Columbus	67 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.