Alert archive / North Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 57, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 7, 1999, 2:30 PM EDT for Rockingham County, North Carolina. It was in force for 45 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 7, 1999, 2:30 PM EDT (18:30 UTC)
- Expired
- Jul 7, 1999, 3:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Rockingham County, NC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 7, 2:45 PM EDT | Hail 0.75 | Mayodan, NC | |
| Jul 7, 3:10 PM EDT | Thunderstorm Wind | Monroeton, NC | |
| Jul 7, 3:10 PM EDT | Hail 1 | Monroeton, NC |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.5 hours before the alert went out and 37 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
- 683 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1339 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 8 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.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Blacksburg, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 10:45 AM EDT, 3 hours 45 minutes earlier.
Area forecast discussion, Jul 7, 10:45 AM EDT, 3 hours 45 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>In the hours before
Special weather statement, Jul 7, 12:03 PM EDT, 2 hours 27 minutes before
NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059- WVZ042>045-071902- THUNDERSTORM POTENTIAL OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 1203 PM EDT WED JUL 7 1999 A COLD FRONT WILL SLOWLY SAG SOUTH ACROSS THE REGION THIS AFTERNOON AND TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT... STARTING FIRST OVER THE MOUNTAINS...THEN DEVELOPING OVER FLAT TERRAIN. SOME OF THE STORMS MAY PRODUCE VERY HEAVY RAIN... STRONG WIND AND LARGE HAIL. THE STRONGEST THUNDERSTORMS ARE LIKELY SOUTHEAST OF A LINE FROM LYNCHBURG VIRGINIA TO MARION VIRGINIA. HH
Special weather statement, Jul 7, 12:03 PM EDT, 2 hours 27 minutes before
NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059- WVZ042>045-071902- THUNDERSTORM POTENTIAL OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 1203 PM EDT WED JUL 7 1999 A COLD FRONT WILL SLOWLY SAG SOUTH ACROSS THE REGION THIS AFTERNOON AND TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT... STARTING FIRST OVER THE MOUNTAINS...THEN DEVELOPING OVER FLAT TERRAIN. SOME OF THE STORMS MAY PRODUCE VERY HEAVY RAIN... STRONG WIND AND LARGE HAIL. THE STRONGEST THUNDERSTORMS ARE LIKELY SOUTHEAST OF A LINE FROM LYNCHBURG VIRGINIA TO MARION VIRGINIA. HH
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 1:29 PM EDT | Severe Thunderstorm Warning | RNK | Pittsylvania, City of Danville | 51 min |
| Jul 7, 2:19 PM EDT | Severe Thunderstorm Warning | RNK | Pittsylvania, City of Danville | 51 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Warning | RNK | Franklin | 50 min |
| Jul 7, 3:14 PM EDT | Severe Thunderstorm Warning | RNK | Amherst | 66 min |
| Jul 7, 3:53 PM EDT | Severe Thunderstorm Warning | RNK | Bedford | 62 min |
| Jul 7, 4:05 PM EDT | Severe Thunderstorm Warning | RNK | Campbell, City of Lynchburg | 50 min |
| Jul 7, 4:11 PM EDT | Severe Thunderstorm Warning | RNK | Halifax | 64 min |
| Jul 7, 5:14 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt | 46 min |
| Jul 7, 12:26 PM EDT | Severe Thunderstorm Warning | RNK | Ashe | 34 min |
| Jul 7, 2:36 PM EDT | Severe Thunderstorm Warning | RNK | Surry | 44 min |
| Jul 7, 3:04 PM EDT | Severe Thunderstorm Warning | RNK | Caswell | 51 min |
| Jul 7, 3:24 PM EDT | Severe Thunderstorm Warning | RNK | Yadkin | 51 min |
| Jul 7, 4:01 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham | 34 min |
| Jul 7, 4:22 PM EDT | Flash Flood Warning | RNK | Rockingham | 3 hr |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.