Alert archive / Virginia / Flood Watches in 2025
Flood Watch 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flood watch at Jul 1, 2025, 2:44 AM EDT for 22 counties in Virginia; 11 counties in Maryland; 5 counties in West Virginia. It took effect at Jul 1, 2025, 2:00 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jul 1, 2025, 2:44 AM EDT (06:44 UTC)
- In effect from
- Jul 1, 2025, 2:00 PM EDT
- Expired
- Jul 1, 2025, 7:39 PM EDT
- In force
- 6 hr
- Issued by
- NWS Baltimore/Washington
- Flood severity
- None
All 38 counties
Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, Cecil County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Harrisonburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Loudoun County, VA, Madison County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 15 km from the middle of the area, began a volume at 06:47 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 6.7 hours before the alert went out and 23 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
- 2011 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1318 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 4.0
What forecasters said that day
The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this flood watch went out at Jun 30, 9:19 PM EDT, 5 hours 25 minutes earlier.
Area forecast discussion, Jun 30, 9:19 PM EDT, 5 hours 25 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, Jun 30, 1:47 PM EDT, 12 hours 57 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 147 PM EDT Mon Jun 30 2025 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-011000- Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- Tidal Potomac from Cobb Island MD to Smith Point VA- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island-District of Columbia-Cecil-Southern Baltimore- Prince Georges-Anne Arundel-Charles-St. Marys-Calvert- Central and Southeast Montgomery-Central and Southeast Howard- Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria- Stafford-Spotsylvania-King George- Central and Southeast Prince William/Manassas/Manassas Park- 147 PM EDT Mon Jun 30 2025 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and I-95 corridor through central Maryland, northern Virginia, and District of Columbia. .DAY ONE...This Afternoon and Tonight Scattered to numerous thunderstorms are expected this afternoon into this evening. A few thunderstorms could produce damaging wind gusts and localized flash flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are likely on Tuesday afternoon into Tuesday evening as a cold front moves through the region. Some storms may be capable of producing damaging wind gusts and scattered instances of flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed on Tuesday. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- 526-WVZ050>053-055-011000- Washington-Frederick MD-Carroll-Northern Baltimore- Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta- Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-Nelson- Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Northern Fauquier-Southern Fauquier-Western Loudoun- Eastern Loudoun-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Northwest Prince William-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 147 PM EDT Mon Jun 30 2025 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...This Afternoon and Tonight Scattered to numerous thunderstorms are expected this afternoon into this evening. A few thunderstorms could produce damaging wind gusts and localized flash flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are likely on Tuesday afternoon into Tuesday evening as a cold front moves through the region. Some storms may be capable of producing damaging wind gusts and scattered instances of flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed on Tuesday. MDZ501-502-509-510-VAZ503-504-WVZ501>506-011000- Extreme Western Allegany-Central and Eastern Allegany- Western Garrett-Eastern Garrett-Western Highland-Eastern Highland- Western Grant-Eastern Grant-Western Mineral-Eastern Mineral- Western Pendleton-Eastern Pendleton- 147 PM EDT Mon Jun 30 2025 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...This Afternoon and Tonight Scattered to numerous thunderstorms are expected this afternoon into this evening. A few thunderstorms could produce damaging wind gusts and localized flash flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are likely on Tuesday afternoon into Tuesday evening as a cold front moves through the region. Some storms may be capable of producing damaging wind gusts and isolated instances of flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed on Tuesday.
In the hours before
Local storm report, Jun 30, 9:42 PM EDT, 5 hours 2 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>Local storm report, Jun 30, 9:49 PM EDT, 4 hours 55 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>Local storm report, Jun 30, 9:53 PM EDT, 4 hours 51 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>Local storm report, Jun 30, 9:54 PM EDT, 4 hours 50 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>Local storm report, Jun 30, 10:46 PM EDT, 3 hours 58 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>Local storm report, Jun 30, 11:32 PM EDT, 3 hours 12 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 Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:02 PM EDT | Special Marine Warning | LWX | 88 min | |
| Jul 1, 11:54 AM EDT | Small Craft Advisory | LWX | 18 hr | |
| Jul 1, 12:41 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Rappahannock | 34 min |
| Jul 1, 12:52 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison | 38 min |
| Jul 1, 1:22 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, Warren, City of Winchester | 38 min |
| Jul 1, 1:24 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 51 min |
| Jul 1, 1:27 PM EDT | Severe Thunderstorm Warning | LWX | Page, Rappahannock, Shenandoah, Warren | 48 min |
| Jul 1, 1:44 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Prince William, Stafford | 46 min |
| Jul 1, 1:55 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Jul 1, 2:21 PM EDT | Special Marine Warning | LWX | 84 min | |
| Jul 1, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, Loudoun, Prince William, City of Alexandria, City of Fairfax and 3 more | 52 min |
| Jul 1, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Page, Rockingham, Shenandoah, Warren | 52 min |
| Jul 1, 2:47 PM EDT | Flash Flood Warning | LWX | Madison, Page, Rappahannock, Shenandoah, Warren | 3 hr |
| Jul 1, 2:54 PM EDT | Flash Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 2 hr |
| Jul 1, 3:11 PM EDT | Flash Flood Warning | LWX | Page, Rockingham, Shenandoah | 3 hr |
| Jul 1, 3:18 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, City of Alexandria | 57 min |
| Jul 1, 3:45 PM EDT | Special Marine Warning | LWX | 60 min | |
| Jul 1, 3:49 PM EDT | Special Marine Warning | LWX | 116 min | |
| Jul 1, 4:15 PM EDT | Special Marine Warning | LWX | 60 min | |
| Jul 1, 4:16 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Greene, Rockingham, City of Staunton | 29 min |
| Jul 1, 4:19 PM EDT | Flash Flood Warning | LWX | Greene, Madison, Page, Rappahannock, Rockingham | 2 hr |
| Jul 1, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Greene, Madison | 52 min |
| Jul 1, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Madison, Page, Rockingham | 15 min |
| Jul 1, 4:54 PM EDT | Flash Flood Warning | LWX | Albemarle, Culpeper, Greene, Madison, Rappahannock, Rockingham | 89 min |
| Jul 1, 5:19 PM EDT | Areal Flood Warning | LWX | Fairfax, City of Fairfax | 76 min |
| Jul 1, 5:53 PM EDT | Severe Thunderstorm Warning | LWX | Orange, Spotsylvania | 37 min |
| Jul 1, 5:55 PM EDT | Special Marine Warning | LWX | 65 min | |
| Jul 1, 5:58 PM EDT | Special Marine Warning | LWX | 92 min | |
| Jul 1, 6:07 PM EDT | Areal Flood Warning | LWX | Rockingham, Shenandoah | 4 hr |
| Jul 1, 6:23 PM EDT | Areal Flood Warning | LWX | Albemarle, Culpeper, Greene, Madison, Rappahannock, Rockingham | 97 min |
| Jul 1, 6:27 PM EDT | Areal Flood Warning | LWX | Greene, Madison, Page, Rockingham | 3 hr |
| Jul 1, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | King George | 46 min |
| Jul 1, 6:49 PM EDT | Special Marine Warning | LWX | 116 min | |
| Jul 1, 6:51 PM EDT | Special Marine Warning | LWX | 114 min | |
| Jul 1, 7:27 PM EDT | Special Marine Warning | LWX | 93 min | |
| Jun 30, 8:14 PM EDT | Tornado Warning | LWX | Harford | 31 min |
| Jun 30, 8:39 PM EDT | Flash Flood Warning | LWX | Harford | 52 min |
| Jun 30, 9:30 PM EDT | Areal Flood Warning | LWX | Baltimore, Harford | 75 min |
| Jun 30, 9:31 PM EDT | Areal Flood Warning | LWX | Harford | 4 hr |
| Jul 1, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 31 min |
| Jul 1, 3:15 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard, Montgomery, City of Baltimore | 45 min |
| Jul 1, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 28 min |
| Jul 1, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 35 min |
| Jul 1, 4:31 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 3 hr |
| Jul 1, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 33 min |
| Jul 1, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 41 min |
| Jul 1, 7:23 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 49 min |
| Jul 1, 7:45 PM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 17 min |
Nearby
Flood Watches in Virginia, 2025Flood Watches in Maryland, 2025Flood Watches in West Virginia, 2025Every flood watch in 2025
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.