Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 46, NWS Raleigh, NC

May 5, 2017Sampson County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at May 5, 2017, 5:11 AM EDT for Sampson County, North Carolina. It was in force for 49 min. 1 report 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: May 5, 2017, 5:11 AM EDT (09:11 UTC)
Expired: May 5, 2017, 6:00 AM EDT
In force: 49 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Sampson County, NC

The radar

The Raleigh/Durham radar (KRAX), 73 km from the middle of the area, began a volume at 09:09 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
May 5, 5:23 AM EDT	TSTM WND DMG	Clinton, NC	SEVERAL TREES BLOWN DOWN AROUND CLINTON INCLUDING ONE TREE DOWN ON A HOUSE ON EDGAR STREET.

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 one storm report to this severe thunderstorm warning; the first came 12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 5, 3:09 AM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 9.2 hours before the alert went out and 139 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: 132 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1061 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

562 
WUUS52 KRAH 050911
SVRRAH
NCC163-051000-
/O.NEW.KRAH.SV.W.0046.170505T0911Z-170505T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
511 AM EDT FRI MAY 5 2017

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Sampson County in central North Carolina...

* Until 600 AM EDT

* At 511 AM EDT, a severe thunderstorm was located 8 miles east of
  Ammon, or 12 miles southwest of Clinton, moving northeast at 60
  mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Clinton, Harrells, Roseboro, Garland, Newton Grove, Salemburg,
  Turkey, Falcon, Autryville and Hobbton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Straight line winds can blow down trees, power lines, and damage
mobile homes and other buildings. Seek shelter in a sturdy structure
until the storm has passed. Stay away from windows as flying debris
generated by damaging winds can be deadly.

&&

A tornado watch remains in effect until 900 AM EDT for central North
Carolina.

LAT...LON 3475 7839 3499 7864 3509 7867 3512 7864
      3520 7864 3520 7863 3530 7858 3532 7854
      3526 7848 3526 7841 3529 7830 3522 7824
      3520 7816 3509 7817 3490 7815 3474 7820
      3471 7813 3472 7811 3471 7811 3455 7825
TIME...MOT...LOC 0911Z 220DEG 52KT 3484 7843 

HAIL...<.75IN
WIND...60MPH
 
$$

pwb

1 follow-up statement

348 
WWUS52 KRAH 050945
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
545 AM EDT FRI MAY 5 2017

NCC163-051000-
/O.CON.KRAH.SV.W.0046.000000T0000Z-170505T1000Z/
Sampson NC-
545 AM EDT FRI MAY 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 AM EDT
FOR EASTERN SAMPSON COUNTY...

At 544 AM EDT, a severe thunderstorm was located near Clinton, moving
northeast at 25 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Clinton, Harrells, Garland, Turkey and Ivanhoe. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Straight line winds can blow down trees, power lines, and damage
mobile homes and other buildings. Seek shelter in a sturdy structure
until the storm has passed. Stay away from windows as flying debris
generated by damaging winds can be deadly.

&&

A tornado watch remains in effect until 900 AM EDT for central North
Carolina.

LAT...LON 3478 7842 3495 7837 3513 7828 3522 7823
      3520 7816 3509 7817 3490 7815 3474 7820
      3471 7813 3472 7811 3471 7811 3455 7825
      3456 7825 3475 7839
TIME...MOT...LOC 0944Z 237DEG 22KT 3501 7821 

HAIL...<.75IN
WIND...60MPH
 
$$
pwb

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 5, 4:15 AM EDT, 56 minutes earlier.

Area forecast discussion, May 5, 4:15 AM EDT, 56 minutes before

Area Forecast Discussion
National Weather Service Raleigh NC
415 AM EDT Fri May 5 2017

.SYNOPSIS...
A strong cold front will surge east across the region this
morning, moving offshore by early afternoon. An upper level trough
will remain across the area through the weekend.

&&

.NEAR TERM /TODAY/...
As of 307 AM Friday...

New Tornado Watch for all but Forsyth... Davidson... and Stanly
Counties through 900 am... along and east of the main convective
bands.

Previous discussion issued at 237 am...

The isolated tornado risk will most likely be extended beyond the
current Tornado Watch time in our Coastal Plain counties. Widespread
showers/rain continued over the NW-N Piedmont keeping this region
relatively stable compared to the areas to the south and east of the
Triad. The juicy air with dew points at 70 was getting pulled
in from the Atlantic with the strong SE low level flow into the
current Tornado Watch area. This region, including the Coastal
Plain will be the main areas of concern as the bands of
showers/isolated thunderstorms move NE across the region this
morning. The Hi-Res HRRR has been keying in on a couple of bands of
convection that warrant attention. They were moving into our SW-S
Piedmont counties currently. A few damaging wind events and possibly
a tornado will be the main hazards. The threat may extend westward a
few counties from where the Tornado Watch is currently located (from
Albemarle to Raleigh to Roanoke Rapids and areas east.

The final band, associated with the cold front, will effective shut
down the isolated tornado/wind damage threat. Timing of that cold
front (which was at 200 am tracking through the GSP area of SC)
should be at or very near the Triangle and Fayetteville
around 12Z, then our far eastern Coastal Plain before noon.
This is supported by the latest Hi-Res guidance / operational
GFS/EC.

The mid level dry slot and cold front will end the main convection
as mentioned this morning. This afternoon, central NC will be in the
dry slot with variably cloudy skies. Highs generally 70-75. Winds
will shift to the SW behind the front at 15-25 mph with gusts to 30+
mph.

Tonight, expect partly to variable cloudy skies as the mid/upper low
tracks NNE up the spine of the central and northern Appalachians.
The only chance of showers appears to be near the Mountains or
closer to the upper low. Otherwise, POP will be NIL. Much cooler and
less humid - lows in the 40s.

&&

.SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/...
As of 410 AM Friday...

A second short wave and associated cold front digs into the east
coast trof Saturday night. This will squeeze out lingering moisture
to produce scattered showers, especially across the northern tier.
Activity will be ending Saturday night as the wave begins to lift
out. Highs will be on the cool side, 65 to 70, with mins Sunday
morning from 45 to 50.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
As of 415 AM EDT Friday...

Omega blocking pattern slowly deamplifies through mid week, with
fast northwest mid level flow into central NC producing mainly dry
weather and a very gradual warming trend. There could be a few
showers in the mid week as an impulse dives down the weakening ridge
and pushes a modest cold front south through the area. Highs Sunday
and Monday will range from 65 to 70...edging into the low and mid
70s from Tuesday through Thursday.

&&

.AVIATION /06Z FRIDAY THROUGH WEDNESDAY/...
As of 145 AM Friday...

24-Hour TAF period: IFR conditions, mainly ceilings, are expected
through around 12Z as widespread rain and embedded convective
elements move across central NC. Winds increase with height to 45kts
at 5K feet, so scattered showers and thunderstorms could produce
gusts as high as 35kts. Conditions will improve fairly quickly from
west to east...~12Z west to ~16Z in the east...as a cold front
sweeps out the moisture. Initial southeast winds sustained at 10-
15kts at issuance will veer to southerly by 12Z, then southwest by
15Z behind the front, and continue through 00Z with gust
diminishing thereafter.

Looking ahead: scattered showers and associated MVFR conditions may
re-develop again Saturday and Sunday aft/eve as the upper trough
over the eastern US amplifies in response to additional shortwave
energy pushing a reinforcing cold front across the area. VFR
conditions are anticipated Monday through Wednesday as the upper
trough lifts NE away from the region.

&&

.RAH WATCHES/WARNINGS/ADVISORIES...
None.

&&

SYNOPSIS...Badgett
NEAR TERM...Badgett
SHORT TERM...mlm
LONG TERM...mlm
AVIATION...MLM

Hazardous weather outlook, May 5, 3:17 AM EDT, 1 hour 54 minutes before

Hazardous Weather Outlook
National Weather Service Raleigh NC
317 AM EDT Fri May 5 2017

NCZ007>011-022>028-039>043-074>078-083>086-088-089-060730-
Person-Granville-Vance-Warren-Halifax-Guilford-Alamance-Orange-
Durham-Franklin-Nash-Edgecombe-Randolph-Chatham-Wake-Johnston-Wilson-
Montgomery-Moore-Lee-Harnett-Wayne-Anson-Richmond-Scotland-Hoke-
Cumberland-Sampson-
317 AM EDT Fri May 5 2017

...TORNADO WATCH 195 IN EFFECT UNTIL 9 AM EDT THIS MORNING...

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.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to call any severe weather reports to the
National Weather Service at 800 444 7928

In the hours before

Local storm report, May 5, 3:56 AM EDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
356 AM EDT FRI MAY 05 2017

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

0341 AM     TSTM WND DMG     3 N LAKE TOWNSEND       36.22N  79.79W
05/05/2017                   GUILFORD           NC   BROADCAST MEDIA

            TREE ON A HOME ON N CHURCH ST AT HWY 150 IN BROWNS
            SUMMIT

&&

EVENT NUMBER RAH1700466

MLM

Local storm report, May 5, 4:38 AM EDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
438 AM EDT FRI MAY 05 2017

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

0350 AM     TSTM WND DMG     GLEN RAVEN              36.12N  79.47W
05/05/2017                   ALAMANCE           NC   911 CALL CENTER

            TREE DOWN ON DURHAM STREET EXTENSION

&&

EVENT NUMBER RAH1700467

BLAES

Local storm report, May 5, 4:54 AM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
454 AM EDT FRI MAY 05 2017

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

0225 AM     TSTM WND DMG     WADESBORO               34.97N  80.07W
05/05/2017                   ANSON              NC   911 CALL CENTER

            MULTIPLE TREES DOWN ACROSS THE COUNTY INCLUDING BILL
            CURLLEE ROAD AND NC 742.

&&

EVENT NUMBER RAH1700468

BLAES

Local storm report, May 5, 5:01 AM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
501 AM EDT FRI MAY 05 2017

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

0433 AM     TSTM WND DMG     4 SSE TEER              35.90N  79.19W
05/05/2017                   ORANGE             NC   911 CALL CENTER

            TREE DOWN AT WHITE CROSS AND OLD GREENSBORO ROADS.

&&

EVENT NUMBER RAH1700469

MLM

Local storm report, May 5, 5:02 AM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
502 AM EDT FRI MAY 05 2017

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

0355 AM     TSTM WND DMG     1 SE VASS               35.25N  79.27W
05/05/2017                   MOORE              NC   911 CALL CENTER

            TREE DOWN ON WHITE ROCK ROAD

&&

EVENT NUMBER RAH1700470

BLAES

Local storm report, May 5, 5:05 AM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
505 AM EDT FRI MAY 05 2017

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

0430 AM     TSTM WND DMG     ABERDEEN                35.14N  79.42W
05/05/2017                   MOORE              NC   911 CALL CENTER

            TREE DOWN ON PARK AVENUE

&&

EVENT NUMBER RAH1700471

BLAES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 10:39 PM EDT	Special Weather Statement	RAH	Anson, Richmond	51 min
May 4, 11:59 PM EDT	Special Weather Statement	RAH	Hoke	31 min
May 5, 12:11 AM EDT	Special Weather Statement	RAH	Durham, Orange	49 min
May 5, 12:52 AM EDT	Special Weather Statement	RAH	Wilson	38 min
May 5, 1:35 AM EDT	Special Weather Statement	RAH	Sampson	40 min
May 5, 2:08 AM EDT	Severe Thunderstorm Warning	RAH	Anson, Montgomery, Stanly	52 min
May 5, 2:12 AM EDT	Severe Thunderstorm Warning	RAH	Anson, Montgomery, Richmond	63 min
May 5, 2:21 AM EDT	Tornado Warning	RAH	Davidson, Montgomery, Randolph	39 min
May 5, 2:26 AM EDT	Tornado Warning	RAH	Anson, Montgomery, Richmond, Stanly	40 min
May 5, 2:42 AM EDT	Severe Thunderstorm Warning	RAH	Davidson, Guilford, Randolph	63 min
May 5, 3:04 AM EDT	Severe Thunderstorm Warning	RAH	Chatham, Moore, Randolph	41 min
May 5, 3:32 AM EDT	Severe Thunderstorm Warning	RAH	Alamance	43 min
May 5, 3:45 AM EDT	Severe Thunderstorm Warning	RAH	Chatham, Lee, Moore	60 min
May 5, 3:50 AM EDT	Severe Thunderstorm Warning	RAH	Harnett, Hoke, Lee, Moore	40 min
May 5, 4:06 AM EDT	Severe Thunderstorm Warning	RAH	Chatham, Orange	42 min
May 5, 4:16 AM EDT	Severe Thunderstorm Warning	RAH	Person	59 min
May 5, 4:29 AM EDT	Severe Thunderstorm Warning	RAH	Durham, Person, Wake	61 min
May 5, 4:35 AM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Sampson	40 min
May 5, 4:56 AM EDT	Severe Thunderstorm Warning	RAH	Granville	37 min
May 5, 5:16 AM EDT	Severe Thunderstorm Warning	RAH	Vance	44 min
May 5, 5:19 AM EDT	Severe Thunderstorm Warning	RAH	Johnston	41 min
May 5, 5:29 AM EDT	Special Weather Statement	RAH	Franklin, Harnett, Wake	61 min
May 5, 5:42 AM EDT	Severe Thunderstorm Warning	RAH	Wayne, Wilson	63 min
May 5, 5:46 AM EDT	Special Weather Statement	RAH	Warren	44 min
May 5, 5:53 AM EDT	Severe Thunderstorm Warning	RAH	Franklin, Nash	52 min
May 5, 6:17 AM EDT	Severe Thunderstorm Warning	RAH	Halifax, Warren	43 min
May 5, 6:21 AM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax	35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017 Every severe thunderstorm warning in 2017

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.