Alert archive / Maryland / Flash Flood Warnings in 2022
Flash Flood Warning 50, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Aug 5, 2022, 4:53 PM EDT for Prince George's County, Maryland. It was in force for 106 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 5, 2022, 4:53 PM EDT (20:53 UTC)
- Expired
- Aug 5, 2022, 6:39 PM EDT
- In force
- 106 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- None
County Prince George's County, MD
The radar
The Sterling radar (KLWX), 58 km from the middle of the area, began a volume at 20:53 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 12:00Z, 8.9 hours before the alert went out and 50 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
- 499 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 5, 3:32 PM EDT, 1 hour 21 minutes earlier.
Area forecast discussion, Aug 5, 3:32 PM EDT, 1 hour 21 minutes before
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</html>Hazardous weather outlook, Aug 5, 11:40 AM EDT, 5 hours 13 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 1140 AM EDT Fri Aug 5 2022 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ052>057-061000- 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-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 1140 AM EDT Fri Aug 5 2022 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 A Flood Watch is in effect for all locations except Cecil County from 3 PM until 11 PM. Thunderstorms may also be capable of producing gusty winds later this afternoon into this evening. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible at times into the weekend. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- WVZ050>053-055-061000- 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-Hampshire-Morgan-Berkeley-Jefferson- Hardy- 1140 AM EDT Fri Aug 5 2022 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 A Flood Watch is in effect from noon until 11 PM to the west of the Blue Ridge, and from 3 PM until 11 PM to the east of the Blue Ridge. Thunderstorms may also be capable of producing gusty winds later this afternoon into this evening. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible at times into the weekend. MDZ001-501-502-VAZ503-504-WVZ501>506-061000- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 1140 AM EDT Fri Aug 5 2022 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 A Flood Watch is in effect from noon until 11 PM. Thunderstorms may also be capable of producing gusty winds later this afternoon into this evening. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible at times into the weekend.
In the hours before
Local storm report, Aug 5, 11:29 AM EDT, 5 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1129 AM EDT FRI AUG 05 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0650 PM LIGHTNING 1 N THE WHITE HOUSE 38.91N 77.04W
08/04/2022 DISTRICT OF COLUMB DC FIRE DEPT/RESCUE
*** 2 FATAL, 2 INJ *** 4 PEOPLE STANDING NEAR A TREE IN
LAFAYETTE PARK WERE STRUCK BY LIGHTNING. 2 WERE KILLED.
2 HAD CRITICAL INJURIES.
&&
CORRECTED EVENT TIME...LOCATION...FATALITIES...INJURIES...REMARKS...
SOURCE...
EVENT NUMBER LWX2204661
STRONGLocal storm report, Aug 5, 4:01 PM EDT, 52 minutes before
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</html>Local storm report, Aug 5, 4:51 PM EDT, 2 minutes before
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</html>Local storm report, Aug 5, 4:52 PM EDT, 1 minute 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 |
|---|---|---|---|---|
| Aug 4, 8:08 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Rappahannock, Warren | 52 min |
| Aug 4, 8:44 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Fauquier, Loudoun, Prince William | 30 min |
| Aug 4, 9:03 PM EDT | Special Marine Warning | LWX | 87 min | |
| Aug 4, 9:12 PM EDT | Special Marine Warning | LWX | 18 min | |
| Aug 4, 10:16 PM EDT | Flash Flood Warning | LWX | Arlington | 2 hr |
| Aug 5, 12:30 AM EDT | Special Marine Warning | LWX | 45 min | |
| Aug 5, 10:20 AM EDT | Flood Watch | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 27 more | 11 hr |
| Aug 5, 1:14 PM EDT | Flash Flood Warning | LWX | Rockingham | 3 hr |
| Aug 5, 1:57 PM EDT | Severe Thunderstorm Warning | LWX | Madison | 16 min |
| Aug 5, 2:13 PM EDT | Areal Flood Warning | LWX | Rockingham | 104 min |
| Aug 5, 2:35 PM EDT | Areal Flood Warning | LWX | Augusta, Nelson | 84 min |
| Aug 5, 3:54 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 36 min |
| Aug 5, 3:58 PM EDT | Areal Flood Warning | LWX | Rockingham | 3 hr |
| Aug 5, 4:00 PM EDT | Special Marine Warning | LWX | 60 min | |
| Aug 5, 4:56 PM EDT | Special Marine Warning | LWX | 44 min | |
| Aug 5, 5:04 PM EDT | Special Marine Warning | LWX | 36 min | |
| Aug 5, 5:39 PM EDT | Special Marine Warning | LWX | 96 min | |
| Aug 5, 5:42 PM EDT | Areal Flood Warning | LWX | Fairfax | 4 hr |
| Aug 5, 5:47 PM EDT | Special Marine Warning | LWX | 58 min | |
| Aug 5, 5:54 PM EDT | Special Marine Warning | LWX | 66 min | |
| Aug 5, 6:13 PM EDT | Special Marine Warning | LWX | 92 min | |
| Aug 5, 6:51 PM EDT | Special Marine Warning | LWX | 84 min | |
| Aug 5, 6:54 PM EDT | Special Marine Warning | LWX | 96 min | |
| Aug 5, 6:57 PM EDT | Special Marine Warning | LWX | 93 min | |
| Aug 5, 7:35 PM EDT | Special Marine Warning | LWX | 85 min | |
| Aug 5, 7:54 PM EDT | Special Marine Warning | LWX | 96 min | |
| Aug 4, 8:31 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 8 hr |
| Aug 4, 8:31 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 8 hr |
| Aug 5, 12:37 AM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 17 min |
| Aug 5, 4:31 PM EDT | Areal Flood Warning | LWX | Allegany, Garrett | 3 hr |
| Aug 5, 4:45 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 30 min |
| Aug 5, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 38 min |
| Aug 5, 5:44 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 31 min |
| Aug 5, 6:08 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 115 min |
| Aug 5, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 31 min |
| Aug 5, 6:39 PM EDT | Areal Flood Warning | LWX | Prince George's | 4 hr |
| Aug 5, 7:08 PM EDT | Areal Flood Warning | LWX | Saint Mary's | 2 hr |
| Aug 5, 1:37 PM EDT | Severe Thunderstorm Warning | LWX | Pendleton | 23 min |
Nearby
Flash Flood Warnings in Maryland, 2022Every flash flood warning in 2022
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.