Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 151, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 30, 2015, 2:15 PM EDT for Harford County, Maryland. It was in force for 34 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 30, 2015, 2:15 PM EDT (18:15 UTC)
- Expired
- Jun 30, 2015, 2:49 PM EDT
- In force
- 34 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
County Harford County, MD
The radar
The Dover AFB radar (KDOX), 108 km from the middle of the area, began a volume at 18:16 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 30, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.3 hours before the alert went out and 19 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
- 600 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.9
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 30, 10:33 AM EDT, 3 hours 42 minutes earlier.
Area forecast discussion, Jun 30, 10:33 AM EDT, 3 hours 42 minutes before
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</html>Hazardous weather outlook, Jun 30, 1:41 PM EDT, 34 minutes before
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Local storm report, Jun 30, 2:06 PM EDT, 9 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 |
|---|---|---|---|---|
| Jun 30, 1:17 PM EDT | Special Marine Warning | LWX | 88 min | |
| Jun 30, 1:25 PM EDT | Special Marine Warning | LWX | 95 min | |
| Jun 30, 2:40 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Jun 30, 4:15 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Jun 30, 4:43 PM EDT | Special Marine Warning | LWX | 92 min | |
| Jun 30, 5:01 PM EDT | Special Marine Warning | LWX | 89 min | |
| Jun 30, 12:57 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 33 min |
| Jun 30, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford | 46 min |
| Jun 30, 3:51 PM EDT | Flash Flood Warning | LWX | Harford | 114 min |
| Jun 30, 4:26 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 19 min |
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.