Alert archive / Maryland / Flash Flood Warnings in 2026
Flash Flood Warning 9, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Jul 6, 2026, 8:21 PM EDT for Harford County, Maryland. It was in force for 94 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
- Jul 6, 2026, 8:21 PM EDT (00:21 UTC)
- Expired
- Jul 6, 2026, 9:55 PM EDT
- In force
- 94 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- None
County Harford County, MD
The radar
The Dover AFB radar (KDOX), 108 km from the middle of the area, began a volume at 00:24 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, 0.4 hours before the alert went out and 115 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
- 1792 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.9
What forecasters said that day
The local office's own words before this flash flood warning 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 flash flood warning went out at Jul 6, 2:07 PM EDT, 6 hours 14 minutes earlier.
Area forecast discussion, Jul 6, 2:07 PM EDT, 6 hours 14 minutes before
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Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 404 PM EDT Mon Jul 6 2026 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-072015- 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- 404 PM EDT Mon Jul 6 2026 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...Tonight A Flood Watch is in effect until midnight. A few severe thunderstorms with damaging wind gusts are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Instances of urban or poor drainage flooding remain possible through Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- 526-WVZ050>053-055-072015- Washington-Frederick-Carroll-Northern Baltimore- Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta- Rockingham-Shenandoah-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- 404 PM EDT Mon Jul 6 2026 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Tonight Flood Watches are in effect for much of the area until midnight. A few severe thunderstorms with damaging wind gusts are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Instances of urban or poor drainage flooding remain possible through Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today. MDZ501-502-509-510-VAZ503-504-WVZ501>506-072015- 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- 404 PM EDT Mon Jul 6 2026 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...Tonight A Flood Watch is in effect for much of the area until midnight. A few severe thunderstorms with damaging wind gusts are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Instances of flooding remain possible through Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today.
In the hours before
Local storm report, Jul 6, 2:41 PM EDT, 5 hours 40 minutes before
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</html>Local storm report, Jul 6, 5:42 PM EDT, 2 hours 39 minutes before
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</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 10:33 PM EDT | Special Marine Warning | LWX | 57 min | |
| Jul 6, 10:57 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 33 min |
| Jul 6, 11:07 PM EDT | Flash Flood Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 5 hr |
| Jul 6, 11:29 PM EDT | Areal Flood Warning | LWX | Loudoun | 6 hr |
| Jul 7, 12:13 AM EDT | Flash Flood Warning | LWX | Fairfax, Prince William | 77 min |
| Jul 7, 12:50 AM EDT | Flash Flood Warning | LWX | Fauquier | 3 hr |
| Jul 7, 1:11 AM EDT | Flash Flood Warning | LWX | Fauquier | 3 hr |
| Jul 7, 1:30 AM EDT | Areal Flood Warning | LWX | Prince William | 3 hr |
| Jul 7, 4:03 AM EDT | Areal Flood Warning | LWX | Fauquier | 4 hr |
| Jul 7, 4:04 AM EDT | Areal Flood Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 4 hr |
| Jul 7, 4:44 AM EDT | Flood Watch | LWX | Albemarle, Amherst, Augusta, Culpeper, Frederick, Greene and 15 more | 16 hr |
| Jul 7, 5:13 PM EDT | Flash Flood Warning | LWX | Page, Shenandoah | 2 hr |
| Jul 6, 8:32 PM EDT | Flash Flood Warning | LWX | Anne Arundel | 58 min |
| Jul 6, 8:40 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 80 min |
| Jul 6, 10:38 PM EDT | Flash Flood Warning | LWX | Montgomery | 65 min |
| Jul 6, 11:43 PM EDT | Areal Flood Warning | LWX | Montgomery | 99 min |
Nearby
Flash Flood Warnings in Maryland, 2026Every flash flood warning in 2026
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.