Alert archive / Maryland / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 28, NWS Baltimore/Washington

June 1, 1998City of Baltimore, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 1, 1998, 12:35 AM EDT for City of Baltimore, Maryland. It was in force for 65 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 1, 1998, 12:35 AM EDT (04:35 UTC)
Expired
Jun 1, 1998, 1:40 AM EDT
In force
65 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County City of Baltimore, MD

The radar

The Sterling radar (KLWX), 83 km from the middle of the area, began a volume at 04:37 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, 4.6 hours before the alert went out and 78 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, Washington/Dulle, VA at 00:00Z on 1998-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3110 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, Washington/Dulle, VA at 00:00Z on 1998-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 square meters per square second.193958Sfc1 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
3110 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1063 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
277 m²/s²
Significant tornado parameter
3.0
Supercell composite
18.2

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
May 31, 9:45 PM EDTTornado WarningLWXAllegany30 min
May 31, 10:00 PM EDTSevere Thunderstorm WarningLWXWashington60 min
Jun 1, 12:07 AM EDTSevere Thunderstorm WarningLWXCarroll, Frederick63 min
Jun 1, 12:13 AM EDTSevere Thunderstorm WarningLWXBaltimore62 min
Jun 1, 12:35 AM EDTSevere Thunderstorm WarningLWXHoward65 min
Jun 1, 12:35 AM EDTSevere Thunderstorm WarningLWXHarford65 min

Nearby

Severe Thunderstorm Warnings in Maryland, 1998Every severe thunderstorm warning in 1998

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.