Alert archive / Maryland / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 79, NWS Baltimore/Washington

June 8, 2015Baltimore County, Harford County, City of Baltimore, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 8, 2015, 8:07 PM EDT for Baltimore County, Harford County, City of Baltimore, Maryland. It was in force for 53 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 8, 2015, 8:07 PM EDT (00:07 UTC)
Expired
Jun 8, 2015, 9:00 PM EDT
In force
53 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon

Counties Baltimore County, MD, City of Baltimore, MD, Harford County, MD

The radar

The Sterling radar (KLWX), 98 km from the middle of the area, began a volume at 00:09 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 8, 7:24 PM EDTSevere Thunderstorm WatchSPC2 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.1 hours before the alert went out and 192 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, Wallops Is Stn, VA at 00:00Z on 2015-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 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, Wallops Is Stn, VA at 00:00Z on 2015-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
39 J/kg
Mixed-layer CIN
-228 J/kg
Mixed-layer LCL
1069 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 8, 8:01 PM EDT, 6 minutes earlier.

Area forecast discussion, Jun 8, 8:01 PM EDT, 6 minutes before
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Hazardous weather outlook, Jun 8, 7:35 PM EDT, 32 minutes before
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In the hours before

Local storm report, Jun 8, 4:27 PM EDT, 3 hours 40 minutes before
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Local storm report, Jun 8, 4:41 PM EDT, 3 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
441 PM EDT MON JUN 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0424 PM     TSTM WND DMG     2 W SHARPSBURG          39.46N  77.79W
06/08/2015                   WASHINGTON         MD   911 CALL CENTER

&&

EVENT NUMBER LWX1500217

LFR
Local storm report, Jun 8, 5:23 PM EDT, 2 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT MON JUN 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0512 PM     TSTM WND DMG     W FAIRFAX STATION       38.80N  77.33W
06/08/2015                   FAIRFAX            VA   911 CALL CENTER

&&

EVENT NUMBER LWX1500218

LFR
Local storm report, Jun 8, 6:40 PM EDT, 1 hour 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
640 PM EDT MON JUN 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0624 PM     TSTM WND DMG     1 ENE RIVERSIDE         38.90N  78.20W
06/08/2015                   WARREN             VA   911 CALL CENTER

            TREES DOWN NEAR INTERSECTION OF STONEWALL JACKSON
            HIGHWAY AND BROWNTOWN ROAD.

&&

EVENT NUMBER LWX1500219

LEE
Local storm report, Jun 8, 6:50 PM EDT, 1 hour 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
650 PM EDT MON JUN 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0628 PM     TSTM WND GST     2 ESE FREDERICK         39.42N  77.37W
06/08/2015  M59 MPH          FREDERICK          MD   AWOS

&&

EVENT NUMBER LWX1500220

LEE
Local storm report, Jun 8, 7:12 PM EDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
712 PM EDT MON JUN 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0633 PM     TSTM WND DMG     1 WSW EDINBURG          38.82N  78.57W
06/08/2015                   SHENANDOAH         VA   NWS EMPLOYEE

            TREE DOWN ACROSS HIGHWAY 11 APPROXIMATELY 1/2 MILE
            SOUTH OF TOWN.

&&

EVENT NUMBER LWX1500221

LEE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:00 PM EDTSpecial Marine WarningLWX2 hr
Jun 8, 8:50 PM EDTSpecial Marine WarningLWX85 min
Jun 8, 8:57 PM EDTSpecial Marine WarningLWX93 min
Jun 8, 9:02 PM EDTSpecial Marine WarningLWX88 min
Jun 8, 9:53 PM EDTSpecial Marine WarningLWX97 min
Jun 8, 10:37 PM EDTSpecial Marine WarningLWX83 min
Jun 8, 9:38 PM EDTFlash Flood WarningLWXBaltimore, Harford6 hr

Nearby

Severe Thunderstorm Warnings in Maryland, 2015Every severe thunderstorm warning in 2015

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.