Alert archive / North Carolina / Tornado Warnings in 2017

Tornado Warning 4, NWS Raleigh, NC

May 23, 2017Sampson County, North Carolina

NWS Raleigh, NC issued this tornado warning at May 23, 2017, 5:24 PM EDT for Sampson County, North Carolina. It was in force for 36 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 23, 2017, 5:24 PM EDT (21:24 UTC)
Expired: May 23, 2017, 6:00 PM EDT
In force: 36 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

County Sampson County, NC

The radar

The Raleigh/Durham radar (KRAX), 67 km from the middle of the area, began a volume at 21:27 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

Newport, NC (KMHX), launched 12:00Z, 9.4 hours before the alert went out and 129 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: 93 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 675 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

334 
WFUS52 KRAH 232124
TORRAH
NCC163-232200-
/O.NEW.KRAH.TO.W.0004.170523T2124Z-170523T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Raleigh NC
524 PM EDT TUE MAY 23 2017

The National Weather Service in Raleigh has issued a

* Tornado Warning for...
  Northeastern Sampson County in central North Carolina...

* Until 600 PM EDT
    
* At 523 PM EDT, a tornado producing storm was located near Clinton,
  moving east at 20 mph.

  HAZARD...Damaging tornado. 

  SOURCE...Radar confirmed tornado. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Clinton and Turkey. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3509 7845 3518 7817 3517 7816 3513 7816
      3512 7817 3509 7817 3508 7816 3500 7815
      3498 7840
TIME...MOT...LOC 2123Z 261DEG 17KT 3505 7838 

TORNADO...OBSERVED
HAIL...<.75IN

$$

77

3 follow-up statements

828 
WWUS52 KRAH 232135
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
535 PM EDT TUE MAY 23 2017

NCC163-232200-
/O.CON.KRAH.TO.W.0004.000000T0000Z-170523T2200Z/
Sampson NC-
535 PM EDT TUE MAY 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR
NORTHEASTERN SAMPSON COUNTY...
    
At 531 PM EDT, a confirmed tornado was located near Clinton, moving
east at 20 mph.

HAZARD...Damaging tornado. 

SOURCE...Emergency management confirmed a tornado touched down near 
         highway 421. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
US highway 701 north of Clinton and locations along I-40 between 
mile markers 355 and 360.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3509 7839 3518 7817 3517 7816 3513 7816
      3512 7817 3509 7817 3508 7816 3502 7815
      3499 7836
TIME...MOT...LOC 2131Z 261DEG 17KT 3506 7833 

TORNADO...OBSERVED
HAIL...<.75IN

$$

77

990 
WWUS52 KRAH 232145
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
545 PM EDT TUE MAY 23 2017

NCC163-232200-
/O.CON.KRAH.TO.W.0004.000000T0000Z-170523T2200Z/
Sampson NC-
545 PM EDT TUE MAY 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR EAST
CENTRAL SAMPSON COUNTY...
    
At 544 PM EDT, a confirmed tornado was located 7 miles northeast of
Clinton, moving east at 25 mph.

HAZARD...Damaging tornado. 

SOURCE...Emergency management confirmed tornado. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Locations along I-40 between mile markers 355 and 358.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3510 7831 3515 7816 3513 7816 3512 7817
      3509 7817 3508 7816 3504 7815 3503 7829
TIME...MOT...LOC 2144Z 259DEG 20KT 3507 7823 

TORNADO...OBSERVED
HAIL...0.00IN

$$

77

129 
WWUS52 KRAH 232154
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
554 PM EDT TUE MAY 23 2017

NCC163-232204-
/O.EXP.KRAH.TO.W.0004.000000T0000Z-170523T2200Z/
Sampson NC-
554 PM EDT TUE MAY 23 2017

...THE TORNADO WARNING FOR EAST CENTRAL SAMPSON COUNTY WILL EXPIRE AT
600 PM EDT...
        
The storm which prompted the warning has moved out of Sampson 
County. Therefore the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Raleigh.

LAT...LON 3510 7831 3515 7816 3513 7816 3512 7817
      3509 7817 3508 7816 3504 7815 3503 7829
TIME...MOT...LOC 2154Z 261DEG 17KT 3508 7818 

$$

77

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 9:09 PM EDT	Areal Flood Advisory	RAH	Cumberland, Harnett, Hoke, Montgomery, Moore, Richmond and 1 more	3 hr
May 22, 11:09 PM EDT	Areal Flood Advisory	RAH	Alamance, Chatham, Durham, Guilford, Harnett, Johnston and 4 more	111 min
May 23, 1:22 AM EDT	Areal Flood Advisory	RAH	Forsyth, Guilford	3 hr
May 23, 1:56 AM EDT	Flash Flood Warning	RAH	Forsyth	3 hr
May 23, 3:41 AM EDT	Flood Watch	RAH	Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more	41 hr
May 23, 8:11 AM EDT	Areal Flood Advisory	RAH	Guilford	3 hr
May 23, 1:00 PM EDT	Areal Flood Advisory	RAH	Forsyth, Guilford	6 hr
May 23, 4:34 PM EDT	Areal Flood Advisory	RAH	Wake	3 hr
May 23, 4:56 PM EDT	Tornado Warning	RAH	Sampson	34 min
May 23, 7:03 PM EDT	Areal Flood Advisory	RAH	Edgecombe, Halifax, Nash, Wilson	3 hr

Nearby

Tornado Warnings in North Carolina, 2017 Every tornado warning in 2017 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.