Alert archive / North Carolina / Tornado Watches in 2018
Tornado Watch 374
The Storm Prediction Center issued this tornado watch at Sep 14, 2018, 4:48 PM EDT for 19 counties in North Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 14, 2018, 4:48 PM EDT (20:48 UTC)
- Expired
- Sep 14, 2018, 11:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
Counties Beaufort County, NC, Carteret County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Greene County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, Onslow County, NC, Pamlico County, NC, Pitt County, NC, Sampson County, NC, Wayne County, NC, Wilson County, NC
The radar
The Morehead City radar (KMHX), 86 km from the middle of the area, began a volume at 20:52 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 5%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 20%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 6:28 PM EDT | Flash Flood Warning | RAH | Johnston, Wayne | 4 hr |
| Sep 14, 9:09 PM EDT | Tornado Warning | MHX | Duplin, Lenoir | 21 min |
| Sep 14, 9:10 PM EDT | Tornado Warning | MHX | Craven, Jones, Onslow | 35 min |
| Sep 14, 9:21 PM EDT | Tornado Warning | RAH | Wayne | 24 min |
| Sep 14, 9:39 PM EDT | Flash Flood Warning | RAH | Wayne | 6 hr |
| Sep 14, 9:43 PM EDT | Tornado Warning | MHX | Duplin, Jones, Lenoir | 47 min |
| Sep 14, 10:20 PM EDT | Tornado Warning | RAH | Wayne | 9 min |
| Sep 14, 10:26 PM EDT | Tornado Warning | MHX | Carteret, Jones, Onslow | 34 min |
| Sep 14, 10:31 PM EDT | Tornado Warning | MHX | Duplin, Greene, Jones, Lenoir, Onslow | 44 min |
| Sep 14, 10:37 PM EDT | Flash Flood Warning | MHX | Duplin, Jones, Lenoir, Onslow | 16 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 8.8 hours before the alert went out and 85 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.
- Mixed-layer CAPE
- 370 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.6
The text
As transmitted.
442 WWUS20 KWNS 142041 SEL4 SPC WW 142041 NCZ000-CWZ000-150300- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 374 NWS Storm Prediction Center Norman OK 440 PM EDT Fri Sep 14 2018 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of central and eastern North Carolina Coastal Waters * Effective this Friday afternoon and evening from 440 PM until 1100 PM EDT. * Primary threats include... A couple tornadoes possible SUMMARY...Convection in inland migrating bands, within the outer northeast quadrant of Florence, may continue to pose a risk for tornadoes through this evening. The tornado watch area is approximately along and 60 statute miles either side of a line from 35 miles west northwest of Goldsboro NC to 70 miles east southeast of New Bern NC. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...This tornado watch replaces tornado watch number 373. Watch number 373 will not be in effect after 440 PM EDT. AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 12040. ...Kerr
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 8:25 PM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Hyde, Jones, Onslow and 1 more | 2 hr |
| Sep 13, 8:59 PM EDT | Tornado Watch | SPC | Beaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more | 10 hr |
| Sep 14, 12:56 AM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more | 3 hr |
| Sep 14, 6:02 AM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Dare, Duplin, Hyde and 9 more | 88 min |
| Sep 14, 6:58 AM EDT | Tornado Watch | SPC | Beaufort, Bertie, Carteret, Chowan, Craven, Dare and 20 more | 10 hr |
| Sep 14, 11:26 AM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 19 more | 2 hr |
| Sep 14, 3:42 PM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Duplin, Edgecombe, Greene and 10 more | 2 hr |
| Sep 14, 7:09 PM EDT | Mesoscale Discussion | SPC | Alamance, Caswell, Durham, Granville, Halifax, Northampton and 4 more | 2 hr |
Nearby
Tornado Watches in North Carolina, 2018Every tornado watch in 2018
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.