Alert archive / Maryland / Flash Flood Warnings in 1996

Flash Flood Warning 101, NWS Baltimore/Washington

June 20, 1996Washington County, Maryland

NWS Baltimore/Washington issued this flash flood warning at Jun 20, 1996, 5:59 PM EDT for Washington County, Maryland. It was in force for 46 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
Jun 20, 1996, 5:59 PM EDT (21:59 UTC)
Expired
Jun 20, 1996, 6:45 PM EDT
In force
46 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Washington County, MD

The radar

The Sterling radar (KLWX), 75 km from the middle of the area, began a volume at 22:01 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.0 hours before the alert went out and 148 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.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 1996-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 193 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 1996-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
193 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 9:16 PM EDTFlash Flood WarningLWXLoudoun119 min
Jun 19, 9:16 PM EDTFlash Flood WarningLWXFairfax119 min
Jun 20, 5:44 PM EDTSevere Thunderstorm WarningLWXFauquier46 min
Jun 19, 9:01 PM EDTFlash Flood WarningLWXMontgomery119 min
Jun 19, 9:52 PM EDTFlash Flood WarningLWXBaltimore, City of Baltimore2 hr
Jun 19, 10:24 PM EDTFlash Flood WarningLWXCarroll, Howard2 hr
Jun 19, 10:55 PM EDTFlash Flood WarningLWXMontgomery3 hr
Jun 19, 11:22 PM EDTFlash Flood WarningLWXFrederick3 hr
Jun 19, 11:56 PM EDTFlash Flood WarningLWXBaltimore2 hr
Jun 20, 12:30 PM EDTFlash Flood WarningLWXSaint Mary's2 hr
Jun 20, 5:59 PM EDTSevere Thunderstorm WarningLWXWashington46 min
Jun 20, 6:45 PM EDTFlash Flood WarningLWXWashington2 hr
Jun 20, 7:23 PM EDTFlash Flood WarningLWXFrederick3 hr
Jun 20, 2:08 PM EDTFlash Flood WarningLWXHampshire3 hr

Nearby

Flash Flood Warnings in Maryland, 1996Every flash flood warning in 1996

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.