Alert archive / North Carolina / Flash Flood Warnings in 2015

Flash Flood Warning 9, NWS Raleigh, NC

June 18, 2015Wake County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jun 18, 2015, 9:54 PM EDT for Wake County, North Carolina. It was in force for 96 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 18, 2015, 9:54 PM EDT (01:54 UTC)
Expired: Jun 18, 2015, 11:30 PM EDT
In force: 96 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

County Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 10 km from the middle of the area, began a volume at 01:56 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.

What was reported inside it

Time	Report	Where	Remark
Jun 18, 10:15 PM EDT	FLASH FLOOD	1 Sse Morrisville, NC	SEVERAL ROADS CLOSED IN THE AREA DUE TO FLOODING.
Jun 18, 10:15 PM EDT	FLASH FLOOD	3 Ne Wendell, NC	4 CARS STUCK IN FLOOD WATERS NEAR ARENDELL AVENUE AND HIGHWAY 64.
Jun 18, 10:30 PM EDT	FLASH FLOOD	5 E Cary, NC	FLOODING ON HILLSBORO STREET AT THE RAILROAD UNDERPASS.
Jun 18, 10:47 PM EDT	FLASH FLOOD	3 Wnw Wendell, NC	TRUCK STRANDED IN FLOOD WATER AT THE WENDELL RD EXIT RAMP OFF U.S. 64.
Jun 18, 10:50 PM EDT	FLASH FLOOD	4 Sw Raleigh, NC	AVENT FERRY RD AT TRAILWOOD FLOODED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 5 storm reports to this flash flood warning; the first came 21 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.9 hours before the alert went out and 126 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: 447 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1993 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

017 
WGUS52 KRAH 190154
FFWRAH
NCC183-190330-
/O.NEW.KRAH.FF.W.0009.150619T0154Z-150619T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
954 PM EDT THU JUN 18 2015

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL WAKE COUNTY IN CENTRAL NORTH CAROLINA...

* UNTIL 1130 PM EDT
    
* AT 953 PM EDT...DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. ONE TO TWO INCHES OF 
  RAIN HAS FALLEN IN LESS THAN AN HOUR. FLASH FLOODING IS EXPECTED 
  TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  RALEIGH...CARY...GARNER...APEX...HOLLY SPRINGS...MORRISVILLE...
  KNIGHTDALE...WENDELL...LAKE BENSON AND NEW HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 3581 7827 3572 7843 3571 7847 3565 7853
      3560 7867 3569 7896 3586 7891

$$

WSS

1 follow-up statement

267 
WGUS72 KRAH 190236
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1036 PM EDT THU JUN 18 2015

NCC183-190330-
/O.CON.KRAH.FF.W.0009.000000T0000Z-150619T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAKE NC-
1036 PM EDT THU JUN 18 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
CENTRAL WAKE COUNTY...

AT 1033 PM EDT...DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS 
PRODUCING FLOODING OVER THE WARNED AREA. BETWEEN ONE AND TWO INCHES 
OF RAIN HAS ALREADY FALLEN. FLASH FLOODING IS OCCURRING ALONG CREEKS 
AND STREAMS...OVERFLOWING ONTO A FEW AREA STREETS.

WHILE THE STORMS WERE WEAKENING AND THE RAIN SLACKENING OFF...WATER 
LEVELS WILL CONTINUE TO RISE ON AREA CREEKS AND STREAMS THROUGH 11 
PM.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
RALEIGH...CARY...GARNER...APEX...HOLLY SPRINGS...MORRISVILLE...
KNIGHTDALE...WENDELL...AND NEW HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.  MOVE TO HIGHER GROUND.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3581 7827 3572 7843 3571 7847 3565 7853
      3560 7867 3569 7896 3586 7891

$$

WSS

What forecasters said that day

The local office's own words before this flash flood warning 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 flash flood warning went out at Jun 18, 4:55 PM EDT, 4 hours 59 minutes earlier.

Area forecast discussion, Jun 18, 4:55 PM EDT, 4 hours 59 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RALEIGH NC
455 PM EDT THU JUN 18 2015

.SYNOPSIS...
STRONG UPPER RIDGE OF HIGH PRESSURE IN PLACE ACROSS THE
SOUTHEAST US WILL WEAKEN OVER THE WEEKEND AS THE REMNANTS OF
TROPICAL CYCLONE BILL APPROACH THE REGION FROM THE WEST LATE
SATURDAY. DURING THE SAME TIME... A WEAK SURFACE BOUNDARY WILL
MEANDER ACROSS THE AREA...BRINGING SMALL CHANCES OF SHOWERS AND
STORMS THE NEXT COUPLE OF DAYS.

&&

.NEAR TERM /THROUGH TONIGHT/...
AS OF 430 PM EDT WEDNESDAY...

A SLOW-MOVING TROPOPAUSE DISTURBANCE OVER EASTERN SC...PER WV
IMAGERY AND MODEL-ANALYZED UPPER LEVEL VORTICITY FIELDS...WILL
DRIFT ESE IN WEAK UPPER LEVEL FLOW ON THE NORTHERN PERIPHERY OF A
STRONG-SUBTROPICAL RIDGE OVER THE SOUTHEASTERN US. THIS FEATURE...
IN CONJUNCTION WITH A THERMAL LOW AND ASSOCIATED LOW LEVEL
CONVERGENCE CENTERED OVER SC...HAS SUPPORTED THE DEVELOPMENT OF
SCATTERED TO NUMEROUS STRONG TO SEVERE STORMS FROM CENTRAL SC TO
SOUTHERN NC...INCLUDING OVER THE RAH COASTAL PLAIN/SANDHILLS/SOUTHERN
PIEDMONT.

MODERATE TO STRONG INSTABILITY HAS DEVELOPED AS TEMPERATURES
HEATED WELL INTO 90S...AND THE COMBINATION OF ASSOCIATED STEEP
LOW LEVEL LAPSE RATES/20-25 DEGREE SFC DEWPOINT DEPRESSIONS/STRONG
DCAPE BETWEEN 1000-1500 J/KG...WILL YIELD A CONTINUED PRIMARY THREAT
OF DAMAGING MICROBURST WINDS FROM PULSE TO MULTICELL-TYPE
STORMS...AND MARGINALLY SEVERE HAIL WITH A FREEZING LEVEL BETWEEN
14-14.5 K FT. THE RELATIVELY MORE ORGANIZED STORMS...OF THE LOOSELY-
ORGANIZED MULTICELL VARIETY...WILL BE NEAR THE VA BORDER OWING TO
THE PROXIMITY OF AN AREA OF STRONGER MID LEVEL FLOW AND
ASSOCIATED EFFECTIVE BULK SHEAR CENTERED OVER THE MIDDLE ATLANTIC
STATES.

NEAR TERM NWP GUIDANCE SUGGESTS AN IMPULSE OR TWO...LIKELY
ORIGINATING FROM UPSTREAM CONVECTION OVER TN AND GA...WILL ROUND
THE RIDGE AND MOVE ACROSS CENTRAL NC BETWEEN 03-09Z. THERE WILL BE
A CONTINUED THREAT OF SHOWERS AND STORMS IN ASSOCIATION WITH ANY
SUCH MCV/S OVERNIGHT...PARTICULARLY IN POCKETS WHERE CONVECTIVE
OVERTURNING DOES NOT OCCUR BEFOREHAND/THIS AFTERNOON AND EVENING.
THE THREAT OF SEVERE STORMS SHOULD GRADUALLY DIMINISH AFTER MID-
EVENING...HOWEVER...AS INSTABILITY LIKEWISE DIMINISHES WITH
NOCTURNAL COOLING.

PERSISTENCE LOWS IN THE LOW TO MID 70S.

&&

.SHORT TERM /FRIDAY AND FRIDAY NIGHT/...
AS OF 450 PM EDT THURSDAY...

ASIDE FROM SLIGHTLY LESS HOT TEMPERAURES OWING TO A SLIGHT
WEAKENING AND SOUTHEASTWARD DRIFT OF THE SUB-TROPCIAL RIDGE OVER
THE SOUTHEASTERN US...A GENERAL PERSISTENCE FORECAST RELATIVE TO
THE HEAT AND PROBABILITY OF AFTERNOON AND EVENING STORMS WILL BE
HARD TO BEAT. CONVECTION WILL AGAIN LIKELY INITIATE ALONG BOTH THE
LEE TROUGH OVER WESTERN NC AND A THERMAL LOW/POCKET OF MAXIMUM
TEMPERATURES FROM CENTRAL SC TO SOUTHERN NC.

MODERATE TO STRONG INSTABILITY AND DCAPE IN EXCESS OF 1000 J/KG
SHOULD AGAIN SUPPORT A CONTINUED PRIMARY THREAT OF DAMAGING
MICROBURST WINDS FROM PULSE TO MULTICELL-TYPE STORMS...AND
MARGINALLY SEVERE HAIL. THE RELATIVELY MORE ORGANIZED STORMS...OF
THE LOOSELY-ORGANIZED MULTICELL VARIETY...SHOULD ALSO AGAIN BE
NEAR THE VA BORDER OWING TO THE PROXIMITY OF LINGERING MODEST MID
LEVEL FLOW AND ASSOCIATED EFFECTIVE BULK SHEAR CENTERED OVER THE
MIDDLE ATLANTIC STATES.

A HEAT ADVISORY HAS BEEN ISSUED/EXTENDED FOR FRI IN AREAS WHERE
IT HAS BEEN IN EFFECT THU; AND BASED ON CRITERIA OF MULTIPLE DAYS
OF 102-105 DEGREE HEAT INDICES...THE ADVISORY MAY NEED TO BE
EXPANDED INTO PORTIONS OF THE SOUTHERN PIEDMONT...THOUGH A MIXING
OUT OF SFC DEWPOINTS INTO THE UPPER 60S AGAIN OVER THE SOUTHERN
AND WESTERN PIEDMONT WILL LIKELY MEAN PEAK HEAT INDICES/ABOVE 102
DEGREES WILL BE SHORT-LIVED THERE.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
AS OF 245 PM THURSDAY...

REMNANTS OF TC BILL WILL BE PICKED UP IN THE WESTERLIES AND SWEPT
EAST ACROSS THE SOUTHERN OHIO VALLEY INTO THE MID ATLANTIC NORTH OF
THE AREA. THE SOUTHERN TAIL OF THE WEAKENING SHEAR AXIS ASSOCIATED
WITH THE SHORT WAVE WILL MOVE ACROSS THE AREA SATURDAY NIGHT INTO
SUNDAY MORNING. NOT QUITE THE MOST FAVORABLE DIURNAL TIMING AS THE
BOUNDARY LAYER WILL STABILIZE OVERNIGHT...BUT THERE WILL BE COPIOUS
CAPE ABOVE THE INVERSION AND WOULD EXPECT A LINE OF CONVECTION TO
ACCOMPANY THE WAVE AND WILL INCREASE POPS ACROSS THE NORTHERN TIER.
SUBSIDENCE BEHIND THE WAVE WILL SUPPRESS CONVECTION ON SUNDAY. HIGHS
SATURDAY WILL BE MAINLY IN THE MID 90S...AND WHILE THERE MAY BE
LINGERING CLOUDINESS TO DECREASE RADIATION EARLY SUNDAY...SUBSIDENCE
WILL ACT AS A COUNTERBALANCE AND LOW LEVEL THICKNESSES RISE 10
METERS SUNDAY...INDICATIVE OF A 2-3 DEGREE RISE...SO WILL BUMP HIGHS
TO THE MID 90S NORTH AND UPPER 90S SOUTH.

INITIAL ZONAL FLOW MONDAY WILL TIP TO THE NORTHWEST AS AN UPPER
RIDGE AMPLIFIES IN THE MIDWEST AND MIGRATES EAST THROUGH THURSDAY.
THIS WILL UNFORTUNATELY PROLONG THE HEAT WAVE AS LOW LEVEL
THICKNESSES BETWEEN 1430-1440 METERS AND H85 TEMPERATURES ARE
EXPECTED TO HOVER AROUND 22C...INDICATIVE OF HIGHS FROM 95 TO 100
EACH DAY. LOWS WILL BE PERSISTENCE...GENERALLY IN THE 72-76 RANGE.
HAVE LOW CONFIDENCE IN FORECASTING MESOSCALE CONVECTIVE TRIGGERS
IN NORTHWEST FLOW AT THIS TIME RANGE...BUT EXPECT STRONG DIURNAL
HEATING TO FIRE CONVECTION IN THE CLIMATOLOGICALLY FAVORED
AREAS...IN THE FAR WEST ALONG THE HIGHER TERRAIN...AND ALONG
COASTAL SECTIONS WITH INLAND PENETRATION OF SEABREEZE.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
AS OF 145 PM THURSDAY...

CONDITIONS WILL REMAIN VFR OUTSIDE OF CONVECTION THIS AFTERNOON INTO
EARLY TONIGHT. ONGOING CONVECTION FIRING IN THE NORTHWEST WILL DRIFT
INTO THE TRIAD BY 19Z. MEANWHILE...MORE WIDELY SCATTERED CONVECTION
IS EXPECTED EAST OF THE TRIAD......WITH ONE CELL ALREADY DEVELOPING
JUST WEST OF FAYETTEVILLE. CONFIDENCE IN TIMING AND LOCATION IS TOO
LOW TO INCLUDE IN THE EASTERN TAFS AT THIS POINT...BUT WILL BE
LARGELY CONFINED TO THE USUAL 20Z-04Z DIURNAL TIME RANGE. WINDS WILL
BE LIGHT...LESS THAN 6 KNOTS...OUTSIDE OF CONVECTION AND VARIABLE IN
DIRECTION.

LOOKING BEYOND THE 24 HOUR TAF PERIOD...PERSISTENT HIGH PRESSURE
WILL GENERALLY CONTROL THE WEATHER INTO EARLY NEXT WEEK WITH HOT
CONDITIONS. VFR CONDITIONS WILL ARE EXPECTED THROUGH MUCH OF THE
PERIOD WITH A THREAT OF SCATTERED AFTERNOON AND EVENING CONVECTION.

&&

.CLIMATE...
REC            HI
DAY       MAX    YR     MIN    YR

RDU RECORDS
06/18 98 1944 75 1935

GSO RECORDS
06/18 100 1944 73 1970

FAY RECORDS
06/18 102 1944 76 2004

&&

.RAH WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR NCZ042-043-077-
078-085-086-088-089.
HEAT ADVISORY FROM NOON TO 7 PM EDT FRIDAY FOR NCZ042-043-077-
078-085-086-088-089.

&&

SYNOPSIS...CBL
NEAR TERM...26
SHORT TERM...26
LONG TERM...MLM
AVIATION...MLM
CLIMATE...RAH

Hazardous weather outlook, Jun 18, 4:15 PM EDT, 5 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
415 PM EDT THU JUN 18 2015

NCZ007>011-021>026-038-039-192015-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-DAVIDSON-RANDOLPH-
415 PM EDT THU JUN 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS THROUGH THIS EVENING...THE
STRONGEST OF WHICH WILL BE CAPABLE OF PRODUCING ISOLATED DAMAGING
WIND GUSTS AND HAIL UP TO THE SIZE OF QUARTERS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

AFTER SLIGHTLY LESS HOT TEMPERATURES IN THE LOWER 90S FRIDAY AND
SATURDAY...A PROLONGED PERIOD OF MIDDLE 90S IS EXPECTED TO RETURN
SUNDAY AND CONTINUE THROUGH AT LEAST THE MIDDLE OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ042-043-077-078-085-086-088-089-192015-
JOHNSTON-WILSON-HARNETT-WAYNE-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
415 PM EDT THU JUN 18 2015

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM EDT FRIDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL 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.

IN ADDITION...SCATTERED THUNDERSTORMS THROUGH THIS EVENING WILL BE
CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND HAIL AROUND THE SIZE
OF QUARTERS.

   HEAT ADVISORY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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

   HEAT ADVISORY.

HOT TEMPERATURES WILL CONTINUE THROUGH NEXT WEEK. ADDITIONAL HEAT
ADVISORIES MAY BE NEEDED.

IN ADDITION...SCATTERED THUNDERSTORMS FRIDAY AFTERNOON AND
EVENING WILL BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND HAIL
AROUND THE SIZE OF QUARTERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ027-028-040-041-073>076-083-084-192015-
NASH-EDGECOMBE-CHATHAM-WAKE-STANLY-MONTGOMERY-MOORE-LEE-ANSON-
RICHMOND-
415 PM EDT THU JUN 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HEAT INDEX VALUES ARE EXPECTED IN THE 100 TO 103 DEGREE RANGE
THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

AFTER SLIGHTLY LESS HOT TEMPERATURES IN THE MIDDLE 90S FRIDAY AND
SATURDAY...A PROLONGED PERIOD OF UPPER 90S HEAT IS EXPECTED TO
RETURN SUNDAY AND CONTINUE THROUGH AT LEAST THE MIDDLE OF NEXT
WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jun 18, 9:01 PM EDT, 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
901 PM EDT THU JUN 18 2015

NCZ008-041-190200-
WAKE NC-GRANVILLE NC-
901 PM EDT THU JUN 18 2015

...A STRONG THUNDERSTORM WILL AFFECT PORTIONS OF NORTHWESTERN WAKE
AND SOUTHEASTERN GRANVILLE COUNTIES UNTIL 1000 PM EDT...

AT 859 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR RDU INTERNATIONAL...OR 7 MILES NORTHWEST OF
RALEIGH...MOVING EAST AT 25 MPH.

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND HEAVY RAINFALL WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
RALEIGH...CARY...CREEDMOOR...WAKE FOREST...RDU INTERNATIONAL...
MORRISVILLE...KNIGHTDALE...PURNELL... UMSTEAD STATE PARK...RESEARCH
TRIANGLE...AND FALLS LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. WIND GUSTS AS HIGH AS
40 MPH ARE CAPABLE OF KNOCKING DOWN TREE LIMBS AND BLOWING AROUND
TRASH CANS...POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR
OBJECTS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
TAKE SHELTER INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER
INDOORS...AN ENCLOSED VEHICLE CAN PROVIDE SAFE SHELTER FROM
LIGHTNING.

&&

LAT...LON 3617 7850 3608 7854 3602 7855 3577 7848
      3581 7892 3587 7891 3587 7883 3592 7881
      3592 7876 3597 7871 3601 7870 3603 7872
      3602 7874 3603 7875 3614 7872
TIME...MOT...LOC 0059Z 278DEG 22KT 3591 7875

10

Special weather statement, Jun 18, 9:13 PM EDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
913 PM EDT THU JUN 18 2015

NCZ010-011-190215-
HALIFAX NC-WARREN NC-
913 PM EDT THU JUN 18 2015

...STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF CENTRAL HALIFAX AND
SOUTHEASTERN WARREN COUNTIES UNTIL 1015 PM EDT...

AT 912 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 14 MILES SOUTH OF LITTLETON...OR 17 MILES NORTH
OF NASHVILLE...MOVING EAST AT 20 MPH.

HALF INCH HAIL... WIND GUSTS UP TO 50 MPH... AND HEAVY RAIN WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
HALIFAX...SCOTLAND NECK...ENFIELD...GLENVIEW...MEDOC MOUNTAIN STATE
PARK...ARCOLA...AIRLIE AND TILLERY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. WIND GUSTS AS HIGH AS
50 MPH ARE CAPABLE OF KNOCKING DOWN SMALL OR WEAKENED TREES AND
BLOWING AROUND TRASH CANS...POTTED PLANTS...LAWN FURNITURE AND OTHER
LIGHT OUTDOOR OBJECTS.

LOCALLY HEAVY RAIN WILL QUICKLY REDUCE VISIBILITY AND RESULT IN
PONDING OF WATER ON ROADWAYS. DRIVERS ARE URGED TO SLOW DOWN AND USE
EXTRA CAUTION TO AVOID HYDROPLANING.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
TAKE SHELTER INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER
INDOORS...AN ENCLOSED VEHICLE CAN PROVIDE SAFE SHELTER FROM
LIGHTNING. DEADLY LIGHTNING STRIKES CAN OCCUR WELL AHEAD OF AN
APPROACHING STORM...PRIOR TO THE ARRIVAL OF RAIN AND WIND.

&&

LAT...LON 3614 7763 3615 7768 3617 7792 3619 7792
      3619 7794 3618 7795 3619 7797 3618 7798
      3621 7803 3632 7803 3638 7755 3634 7759
      3631 7757 3631 7750 3632 7744 3629 7742
      3612 7741
TIME...MOT...LOC 0112Z 262DEG 19KT 3622 7791

77

Special weather statement, Jun 18, 9:18 PM EDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
918 PM EDT THU JUN 18 2015

NCZ024-025-040-190215-
ORANGE NC-CHATHAM NC-DURHAM NC-
918 PM EDT THU JUN 18 2015

...AN AREA OF SHOWERS AND STRONG THUNDERSTORMS WILL AFFECT PORTIONS
OF ORANGE...NORTHEASTERN CHATHAM AND DURHAM COUNTIES UNTIL 1015 PM
EDT...

AT 916 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF SHOWERS AND STRONG THUNDERSTORMS NEAR RDU INTERNATIONAL...OR
8 MILES EAST OF DURHAM...MOVING EAST AT 30 MPH.

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...EXCESSIVE LIGHTNING...AND
HEAVY RAINFALL WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
DURHAM...CHAPEL HILL...HILLSBOROUGH...CARRBORO...MEBANE...
ROUGEMONT...LAKE MICHIE...LAKE JORDAN...BETHESDA...SCHLEY...
BYNUM...EFLAND AND BAHAMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAIN WILL QUICKLY REDUCE VISIBILITY AND RESULT IN
PONDING OF WATER ON ROADWAYS. DRIVERS ARE URGED TO SLOW DOWN AND USE
EXTRA CAUTION TO AVOID HYDROPLANING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.

THIS THUNDERSTORM IS PRODUCING AN EXCESSIVE AMOUNT OF DEADLY CLOUD TO
GROUND LIGHTNING. SEEK SHELTER INDOORS AND STAY AWAY FROM WINDOWS. IF
YOU CANNOT SEEK SHELTER INDOORS...AN ENCLOSED VEHICLE CAN PROVIDE
SAFE SHELTER.

&&

LAT...LON 3624 7880 3609 7881 3609 7879 3607 7878
      3607 7875 3603 7875 3602 7874 3603 7872
      3601 7870 3595 7873 3592 7876 3593 7881
      3587 7883 3587 7891 3575 7894 3576 7923
      3585 7924 3591 7926 3624 7926
TIME...MOT...LOC 0116Z 287DEG 24KT 3595 7876

10

Special weather statement, Jun 18, 9:45 PM EDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
945 PM EDT THU JUN 18 2015

NCZ027-040>043-076>078-190315-
WAKE NC-WILSON NC-NASH NC-CHATHAM NC-JOHNSTON NC-WAYNE NC-LEE NC-
HARNETT NC-
945 PM EDT THU JUN 18 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF
WAKE...WILSON...SOUTHERN NASH...EASTERN CHATHAM...
JOHNSTON...NORTHERN WAYNE...NORTHERN LEE AND NORTH CENTRAL HARNETT
COUNTIES UNTIL 1115 PM EDT...

AT 943 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR BAILEY
TO 10 MILES WEST OF CARY...AND MOVING SOUTHEAST AT 20 MPH.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
RALEIGH...CARY...SMITHFIELD...WILSON...GARNER...FUQUAY-VARINA...
CLAYTON...ANGIER...FREMONT AND BAILEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

THESE THUNDERSTORMS ARE PRODUCING AN EXCESSIVE AMOUNT OF DEADLY CLOUD
TO GROUND LIGHTNING. SEEK SHELTER INDOORS AND STAY AWAY FROM WINDOWS.
IF YOU CANNOT SEEK SHELTER INDOORS...AN ENCLOSED VEHICLE CAN PROVIDE
SAFE SHELTER. DEADLY LIGHTNING STRIKES CAN OCCUR WELL AHEAD OF AN
APPROACHING STORM...PRIOR TO THE ARRIVAL OF RAIN AND WIND.

&&

LAT...LON 3567 7768 3557 7782 3546 7783 3553 7928
      3578 7909 3583 7797
TIME...MOT...LOC 0143Z 306DEG 16KT 3582 7804 3577 7899

WSS

Special weather statement, Jun 18, 9:49 PM EDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
949 PM EDT THU JUN 18 2015

NCZ011-028-190245-
HALIFAX NC-EDGECOMBE NC-
949 PM EDT THU JUN 18 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF SOUTHERN
HALIFAX AND NORTHEASTERN EDGECOMBE COUNTIES UNTIL 1045 PM EDT...

AT 948 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES
SOUTHWEST OF HALIFAX TO NEAR SCOTLAND NECK TO NEAR TARBORO...AND
MOVING EAST AT 10 MPH.

HALF INCH HAIL... WIND GUSTS UP TO 45 MPH AND HEAVY RAIN WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
TARBORO...HALIFAX...SCOTLAND NECK...ENFIELD...PRINCEVILLE...
HOBGOOD...SPEED...LEGGETT...TILLERY AND MEDOC MOUNTAIN STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAIN WILL QUICKLY REDUCE VISIBILITY AND RESULT IN
PONDING OF WATER ON ROADWAYS. DRIVERS ARE URGED TO SLOW DOWN AND USE
EXTRA CAUTION TO AVOID HYDROPLANING.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
TAKE SHELTER INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER
INDOORS...AN ENCLOSED VEHICLE CAN PROVIDE SAFE SHELTER FROM
LIGHTNING. DEADLY LIGHTNING STRIKES CAN OCCUR WELL AHEAD OF AN
APPROACHING STORM...PRIOR TO THE ARRIVAL OF RAIN AND WIND.

&&

LAT...LON 3609 7731 3600 7741 3590 7734 3583 7735
      3583 7756 3608 7758 3613 7770 3615 7770
      3614 7773 3622 7793 3638 7755 3634 7759
      3630 7754 3632 7744 3621 7738 3617 7728
      3611 7723
TIME...MOT...LOC 0148Z 254DEG 11KT 3624 7775 3611 7747 3589 7747

77

Local storm report, Jun 18, 9:54 PM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
954 PM EDT THU JUN 18 2015

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

0920 PM     FLASH FLOOD      ROCKY MOUNT             35.95N  77.79W
06/18/2015                   EDGECOMBE          NC   LAW ENFORCEMENT

            NUMEROUS REPORTS OF FLOODED ROADS ACROSS ROCKY MOUNT.
            SEVERAL CARS DROVE INTO FLOOD WATERS AND BECAME STRANDED
            IN DOWNTOWN ROCKY MOUNT. FLOODING IS STILL ONGOING.

&&

EVENT NUMBER RAH1500692

BSD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 8:01 PM EDT	Special Weather Statement	RAH	Franklin	29 min
Jun 18, 8:09 PM EDT	Special Weather Statement	RAH	Granville, Vance, Warren	66 min
Jun 18, 8:12 PM EDT	Severe Thunderstorm Warning	RAH	Franklin	48 min
Jun 18, 8:21 PM EDT	Special Weather Statement	RAH	Randolph	54 min
Jun 18, 8:35 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Orange	40 min
Jun 18, 8:40 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Franklin, Nash, Wake, Wilson	65 min
Jun 18, 9:01 PM EDT	Special Weather Statement	RAH	Wake	59 min
Jun 18, 9:05 PM EDT	Areal Flood Advisory	RAH	Durham, Edgecombe, Franklin, Nash, Wake	3 hr
Jun 18, 9:13 PM EDT	Special Weather Statement	RAH	Halifax	62 min
Jun 18, 9:16 PM EDT	Flash Flood Warning	RAH	Edgecombe, Nash	3 hr
Jun 18, 9:18 PM EDT	Special Weather Statement	RAH	Durham, Orange	57 min
Jun 18, 9:27 PM EDT	Flash Flood Warning	RAH	Durham, Wake	2 hr
Jun 18, 9:45 PM EDT	Special Weather Statement	RAH	Johnston, Wake, Wilson	90 min
Jun 18, 9:49 PM EDT	Special Weather Statement	RAH	Halifax	56 min
Jun 18, 10:15 PM EDT	Areal Flood Advisory	RAH	Chatham, Durham, Orange	2 hr
Jun 18, 11:31 PM EDT	Areal Flood Warning	RAH	Wake	6 hr
Jun 19, 12:13 AM EDT	Areal Flood Warning	RAH	Edgecombe, Nash	6 hr
Jun 19, 2:45 PM EDT	Special Weather Statement	RAH	Randolph	60 min
Jun 19, 3:20 PM EDT	Severe Thunderstorm Warning	RAH	Randolph	55 min
Jun 19, 3:34 PM EDT	Heat Advisory	RAH	Anson, Cumberland, Edgecombe, Harnett, Hoke, Johnston and 11 more	27 hr
Jun 19, 3:35 PM EDT	Special Weather Statement	RAH	Davidson	55 min
Jun 19, 3:53 PM EDT	Special Weather Statement	RAH	Hoke	67 min
Jun 19, 4:11 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Hoke	51 min
Jun 19, 4:18 PM EDT	Special Weather Statement	RAH	Randolph	57 min
Jun 19, 4:33 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Moore, Randolph	45 min
Jun 19, 4:43 PM EDT	Severe Thunderstorm Warning	RAH	Davidson, Randolph	32 min
Jun 19, 5:16 PM EDT	Severe Thunderstorm Warning	RAH	Davidson, Forsyth	46 min
Jun 19, 5:21 PM EDT	Special Weather Statement	RAH	Montgomery, Moore, Randolph	54 min
Jun 19, 5:41 PM EDT	Special Weather Statement	RAH	Sampson	64 min
Jun 19, 5:46 PM EDT	Areal Flood Advisory	RAH	Davidson, Randolph	119 min
Jun 19, 5:57 PM EDT	Special Weather Statement	RAH	Alamance, Guilford	63 min
Jun 19, 5:58 PM EDT	Special Weather Statement	RAH	Harnett	47 min
Jun 19, 6:00 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Johnston, Sampson	36 min
Jun 19, 6:09 PM EDT	Special Weather Statement	RAH	Stanly	66 min
Jun 19, 6:18 PM EDT	Areal Flood Advisory	RAH	Guilford	117 min
Jun 19, 6:26 PM EDT	Special Weather Statement	RAH	Wayne	64 min
Jun 19, 6:28 PM EDT	Special Weather Statement	RAH	Lee, Moore	62 min
Jun 19, 6:37 PM EDT	Flash Flood Warning	RAH	Guilford	3 hr
Jun 19, 6:48 PM EDT	Special Weather Statement	RAH	Harnett	57 min
Jun 19, 7:00 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Scotland	60 min
Jun 19, 7:10 PM EDT	Special Weather Statement	RAH	Wake	65 min
Jun 19, 7:40 PM EDT	Special Weather Statement	RAH	Sampson	35 min
Jun 19, 7:40 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Wake	65 min
Jun 19, 7:46 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett	44 min
Jun 19, 7:46 PM EDT	Severe Thunderstorm Warning	RAH	Sampson	44 min
Jun 19, 7:58 PM EDT	Special Weather Statement	RAH	Person	62 min

Nearby

Flash Flood Warnings in North Carolina, 2015 Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.