Alert archive / North Carolina / Severe Thunderstorm Watches in 2021
Severe Thunderstorm Watch 61
The Storm Prediction Center issued this severe thunderstorm watch at Mar 27, 2021, 5:29 PM EDT for 19 counties in North Carolina. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2021, 5:29 PM EDT (21:29 UTC)
- Expired
- Mar 27, 2021, 10:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Anson County, NC, Beaufort County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Greene County, NC, Hoke County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Onslow County, NC, Pamlico County, NC, Pitt County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Washington County, NC
The radar
The Morehead City radar (KMHX), 69 km from the middle of the area, began a volume at 21:30 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 5:42 PM EDT | Severe Thunderstorm Warning | RAH | Cumberland, Harnett, Johnston, Lee, Moore, Sampson and 1 more | 48 min |
| Mar 27, 6:20 PM EDT | Severe Thunderstorm Warning | MHX | Greene, Pitt | 70 min |
| Mar 27, 6:28 PM EDT | Severe Thunderstorm Warning | MHX | Duplin | 47 min |
| Mar 27, 6:39 PM EDT | Severe Thunderstorm Warning | MHX | Craven, Duplin, Greene, Jones, Lenoir, Pitt | 81 min |
| Mar 27, 6:51 PM EDT | Severe Thunderstorm Warning | RAH | Sampson | 54 min |
| Mar 27, 6:57 PM EDT | Severe Thunderstorm Warning | MHX | Duplin | 48 min |
| Mar 27, 7:06 PM EDT | Severe Thunderstorm Warning | RAH | Cumberland, Sampson | 69 min |
| Mar 27, 7:44 PM EDT | Severe Thunderstorm Warning | MHX | Craven, Duplin, Jones, Lenoir, Onslow | 76 min |
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, 9.5 hours before the alert went out and 69 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
- 132 J/kg
- Mixed-layer CIN
- -315 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
816 WWUS20 KWNS 272126 SEL1 SPC WW 272126 NCZ000-CWZ000-280200- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 61 NWS Storm Prediction Center Norman OK 530 PM EDT Sat Mar 27 2021 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Eastern and southern North Carolina Coastal Waters * Effective this Saturday afternoon and evening from 530 PM until 1000 PM EDT. * Primary threats include... Isolated damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A cluster with embedded supercells should spread east-southeast from central North Carolina before decaying across eastern North Carolina later this evening. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 55 miles north northeast of New Bern NC to 30 miles southeast of Fayetteville NC. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 58...WW 59...WW 60... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28035. ...Grams
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 1:39 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Anson, Burke, Cabarrus, Caldwell and 42 more | 66 min |
| Mar 27, 2:03 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Alleghany, Burke, Cabarrus, Caldwell and 35 more | 6 hr |
| Mar 27, 4:49 PM EDT | Mesoscale Discussion | SPC | Alamance, Caswell, Chatham, Durham, Edgecombe, Franklin and 19 more | 56 min |
| Mar 27, 7:53 PM EDT | Mesoscale Discussion | SPC | Beaufort, Carteret, Craven, Duplin, Greene, Hyde and 7 more | 97 min |
Nearby
Severe Thunderstorm Watches in North Carolina, 2021Every severe thunderstorm watch in 2021
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.