Alert archive / Maryland / Flash Flood Warnings in 2022
Flash Flood Warning 72, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Aug 22, 2022, 5:05 PM EDT for Baltimore County, Harford County, Maryland. It was in force for 2 hr. 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 22, 2022, 5:05 PM EDT (21:05 UTC)
- Expired
- Aug 22, 2022, 7:33 PM EDT
- In force
- 2 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- None
Counties Baltimore County, MD, Harford County, MD
The radar
The Sterling radar (KLWX), 105 km from the middle of the area, began a volume at 21:05 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.1 hours before the alert went out and 196 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
- 569 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
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 Aug 22, 2:21 PM EDT, 2 hours 44 minutes earlier.
Area forecast discussion, Aug 22, 2:21 PM EDT, 2 hours 44 minutes before
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</html>Hazardous weather outlook, Aug 22, 4:48 PM EDT, 17 minutes before
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Local storm report, Aug 22, 12:18 PM EDT, 4 hours 47 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 |
|---|---|---|---|---|
| Aug 21, 9:18 PM EDT | Small Craft Advisory | LWX | 4 hr | |
| Aug 22, 6:16 AM EDT | Dense Fog Advisory | LWX | Greene, Madison, Page, Rappahannock, Rockingham, Shenandoah and 2 more | 3 hr |
| Aug 22, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, City of Winchester | 26 min |
| Aug 22, 4:57 PM EDT | Special Marine Warning | LWX | 93 min | |
| Aug 22, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Madison, Orange | 39 min |
| Aug 21, 8:51 PM EDT | Areal Flood Warning | LWX | Harford | 5 hr |
| Aug 21, 9:12 PM EDT | Areal Flood Warning | LWX | Saint Mary's | 3 hr |
| Aug 21, 9:59 PM EDT | Areal Flood Warning | LWX | Calvert, Saint Mary's | 6 hr |
| Aug 21, 10:53 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 2 hr |
| Aug 22, 12:55 AM EDT | Areal Flood Warning | LWX | Baltimore, Harford | 47 min |
| Aug 22, 9:22 AM EDT | Areal Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Aug 22, 5:54 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 102 min |
| Aug 22, 7:29 PM EDT | Areal Flood Warning | LWX | Harford | 115 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.