Alert archive / North Carolina / Tornado Watches in 1998
Tornado Watch 244
The Storm Prediction Center issued this tornado watch at Apr 17, 1998, 7:30 PM EDT for 29 counties in North Carolina. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 1998, 7:30 PM EDT (23:30 UTC)
- Expired
- Apr 18, 1998, 12:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Alamance County, NC, Bertie County, NC, Caswell County, NC, Chatham County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Johnston County, NC, Lee County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 7:48 PM EDT | Severe Thunderstorm Warning | RAH | Alamance | 47 min |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.5 hours before the alert went out and 111 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
- 77 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 541 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 277 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 11:00 PM EDT | Tornado Watch | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 34 more | 6 hr |
| Apr 17, 1:30 AM EDT | Tornado Watch | SPC | Union | 6 hr |
| Apr 17, 8:00 AM EDT | Tornado Watch | SPC | Robeson | 6 hr |
Nearby
Tornado Watches in North Carolina, 1998Every tornado watch in 1998
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.