Alert archive / North Carolina / Tornado Watches in 1998
Tornado Watch 305
The Storm Prediction Center issued this tornado watch at May 7, 1998, 7:00 PM EDT for 30 counties in North Carolina; City of Danville, Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 7, 1998, 7:00 PM EDT (23:00 UTC)
- Expired
- May 8, 1998, 12:00 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Alamance County, NC, Anson County, NC, Caswell County, NC, Chatham County, NC, Cumberland County, NC, Duplin County, NC, Durham County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Sampson County, NC, Scotland County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, City of Danville, VA
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:13 PM EDT | Severe Thunderstorm Warning | RAH | Guilford, Randolph | 32 min |
| May 7, 7:27 PM EDT | Tornado Warning | RAH | Guilford | 33 min |
| May 7, 7:44 PM EDT | Tornado Warning | RAH | Randolph | 31 min |
| May 7, 8:02 PM EDT | Tornado Warning | RNK | Rockingham | 33 min |
| May 7, 8:03 PM EDT | Tornado Warning | RAH | Alamance, Guilford | 32 min |
| May 7, 8:03 PM EDT | Tornado Warning | RAH | Chatham | 32 min |
| May 7, 8:39 PM EDT | Tornado Warning | RNK | Caswell | 46 min |
| May 7, 9:01 PM EDT | Severe Thunderstorm Warning | RAH | Montgomery, Stanly | 34 min |
| May 7, 9:04 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Wake | 31 min |
| May 7, 9:13 PM EDT | Severe Thunderstorm Warning | RAH | Person | 32 min |
| May 7, 9:25 PM EDT | Flash Flood Warning | RNK | City of Danville | 2 hr |
| May 7, 9:34 PM EDT | Severe Thunderstorm Warning | RAH | Harnett, Johnston, Wake | 31 min |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.0 hours before the alert went out and 87 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
- 49 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 523 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 53 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 |
|---|---|---|---|---|
| May 7, 11:30 AM EDT | Severe Thunderstorm Watch | SPC | Anson, Union | 5 hr |
| May 7, 2:30 PM EDT | Tornado Watch | SPC | Cherokee, Clay, Graham, Swain | 7 hr |
| May 7, 5:00 PM EDT | Tornado Watch | SPC | Union | 6 hr |
| May 7, 5:30 PM EDT | Tornado Watch | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 28 more | 6 hr |
Nearby
Tornado Watches in North Carolina, 1998Tornado Watches in Virginia, 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.