Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 156, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 18, 2024, 7:32 PM EDT for Lancaster County, Pennsylvania. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2024, 7:32 PM EDT (23:32 UTC)
- Expired
- Aug 18, 2024, 8:30 PM EDT
- In force
- 58 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lancaster County, PA
The radar
The Dover AFB radar (KDOX), 152 km from the middle of the area, began a volume at 23:34 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 18, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.5 hours before the alert went out and 246 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
- 165 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 7:59 PM EDT, 23 hours 33 minutes earlier.
Area forecast discussion, Aug 17, 7:59 PM EDT, 23 hours 33 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>Hazardous weather outlook, Aug 17, 7:51 PM EDT, 23 hours 41 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>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:04 PM EDT | Flash Flood Warning | CTP | Blair, Centre, Huntingdon | 3 hr |
| Aug 17, 8:28 PM EDT | Special Weather Statement | CTP | Mifflin | 47 min |
| Aug 17, 8:34 PM EDT | Special Weather Statement | CTP | Potter | 26 min |
| Aug 17, 8:47 PM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Aug 17, 8:57 PM EDT | Special Weather Statement | CTP | Clearfield | 33 min |
| Aug 17, 8:57 PM EDT | Special Weather Statement | CTP | Potter | 33 min |
| Aug 17, 9:21 PM EDT | Areal Flood Advisory | CTP | McKean, Potter | 4 hr |
| Aug 17, 9:53 PM EDT | Special Weather Statement | CTP | Mifflin | 37 min |
| Aug 17, 10:32 PM EDT | Areal Flood Advisory | CTP | Cameron, Centre, Clearfield, Clinton | 4 hr |
| Aug 17, 10:58 PM EDT | Special Weather Statement | CTP | Mifflin | 32 min |
| Aug 18, 1:24 AM EDT | Areal Flood Advisory | CTP | Clearfield | 96 min |
| Aug 18, 2:02 AM EDT | Flash Flood Warning | CTP | Clearfield | 118 min |
| Aug 18, 2:15 AM EDT | Areal Flood Advisory | CTP | Blair, Centre, Huntingdon | 103 min |
| Aug 18, 2:45 AM EDT | Special Weather Statement | CTP | Centre | 30 min |
| Aug 18, 3:07 AM EDT | Areal Flood Advisory | CTP | Cameron, Centre, Clinton, Elk, Lycoming, Potter and 1 more | 3 hr |
| Aug 18, 5:33 AM EDT | Areal Flood Advisory | CTP | Tioga | 117 min |
| Aug 18, 11:01 AM EDT | Areal Flood Advisory | CTP | Potter, Tioga | 119 min |
| Aug 18, 1:29 PM EDT | Special Weather Statement | CTP | Dauphin | 31 min |
| Aug 18, 1:42 PM EDT | Special Weather Statement | CTP | Snyder, Union | 33 min |
| Aug 18, 2:00 PM EDT | Special Weather Statement | CTP | Schuylkill | 30 min |
| Aug 18, 2:02 PM EDT | Special Weather Statement | CTP | Dauphin | 28 min |
| Aug 18, 2:09 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland, Perry, Snyder | 51 min |
| Aug 18, 2:11 PM EDT | Special Weather Statement | CTP | Lycoming | 34 min |
| Aug 18, 3:54 PM EDT | Special Weather Statement | CTP | Lebanon | 36 min |
| Aug 18, 4:29 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, York | 91 min |
| Aug 18, 5:15 PM EDT | Special Weather Statement | CTP | Cumberland | 30 min |
| Aug 18, 5:27 PM EDT | Special Weather Statement | CTP | Lancaster | 33 min |
| Aug 18, 5:42 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin | 33 min |
| Aug 18, 5:53 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, York | 112 min |
| Aug 18, 6:13 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Aug 18, 6:14 PM EDT | Special Weather Statement | CTP | Dauphin | 31 min |
| Aug 18, 7:12 PM EDT | Special Weather Statement | CTP | Lancaster | 33 min |
| Aug 18, 7:24 PM EDT | Special Weather Statement | CTP | Lancaster | 21 min |
| Aug 18, 7:54 PM EDT | Areal Flood Advisory | CTP | Lancaster | 96 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2024Every severe thunderstorm warning in 2024
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.