Alert archive / Maryland / Tornado Warnings in 2015

Tornado Warning 13, NWS Baltimore/Washington

June 20, 2015Anne Arundel County, Maryland

NWS Baltimore/Washington issued this tornado warning at Jun 20, 2015, 10:15 PM EDT for Anne Arundel County, Maryland. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 20, 2015, 10:15 PM EDT (02:15 UTC)
Expired: Jun 20, 2015, 10:25 PM EDT
In force: 10 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon

County Anne Arundel County, MD

The radar

The Sterling radar (KLWX), 90 km from the middle of the area, began a volume at 02:14 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 20, 2:23 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.3 hours before the alert went out and 159 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 261 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 1179 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

119 
WFUS51 KLWX 210215
TORLWX
MDC003-210245-
/O.NEW.KLWX.TO.W.0013.150621T0215Z-150621T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1015 PM EDT SAT JUN 20 2015

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN ANNE ARUNDEL COUNTY IN CENTRAL MARYLAND...

* UNTIL 1045 PM EDT
    
* AT 1015 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER SILLERY BAY...AND MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SILLERY BAY...GIBSON ISLAND...FORT SMALLWOOD STATE PARK...BODKIN
  POINT...PINEHURST...ARNOLD...LAKE SHORE...PASADENA...CAPE ARTHUR...
  CAPE ST. CLAIRE...RIVERDALE...BELVEDERE HEIGHTS AND CHELSEA BEACH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3900 7644 3906 7657 3916 7650 3916 7649
      3917 7648 3915 7647 3913 7643 3911 7643
      3908 7642 3905 7644 3903 7640
TIME...MOT...LOC 0215Z 217DEG 23KT 3907 7648 

$$

LFR

1 follow-up statement

344 
WWUS51 KLWX 210225
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1025 PM EDT SAT JUN 20 2015

MDC003-210235-
/O.CAN.KLWX.TO.W.0013.000000T0000Z-150621T0245Z/
ANNE ARUNDEL MD-
1025 PM EDT SAT JUN 20 2015

...THE TORNADO WARNING FOR NORTHEASTERN ANNE ARUNDEL COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS TO BE CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3900 7644 3906 7657 3916 7650 3916 7649
      3917 7648 3915 7647 3913 7643 3911 7643
      3908 7642 3905 7644 3903 7640
TIME...MOT...LOC 0224Z 217DEG 23KT 3912 7643 

$$

LFR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:10 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Howard, Montgomery, Prince George's	35 min
Jun 20, 8:21 PM EDT	Tornado Warning	LWX	Charles, Prince George's	24 min
Jun 20, 8:27 PM EDT	Severe Thunderstorm Warning	LWX	Charles	33 min
Jun 20, 8:33 PM EDT	Tornado Warning	LWX	Charles, Prince George's	1 min
Jun 20, 8:34 PM EDT	Tornado Warning	LWX	Charles	26 min
Jun 20, 8:36 PM EDT	Flash Flood Warning	LWX	Frederick	3 hr
Jun 20, 8:59 PM EDT	Tornado Warning	LWX	Baltimore, City of Baltimore	20 min
Jun 20, 9:04 PM EDT	Flash Flood Warning	LWX	Montgomery, Prince George's	3 hr
Jun 20, 9:07 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Charles, Saint Mary's	38 min
Jun 20, 9:08 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Harford, Prince George's, City of Baltimore	37 min
Jun 20, 9:26 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Prince George's	49 min
Jun 20, 9:30 PM EDT	Flash Flood Warning	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	3 hr
Jun 20, 9:37 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	23 min
Jun 20, 9:43 PM EDT	Tornado Warning	LWX	Anne Arundel	32 min
Jun 20, 9:52 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Saint Mary's	38 min
Jun 20, 10:38 PM EDT	Areal Flood Warning	LWX	Frederick	9 hr
Jun 20, 11:06 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	13 hr
Jun 20, 11:25 PM EDT	Coastal Flood Advisory	LWX	Prince George's	3 hr
Jun 20, 11:35 PM EDT	Areal Flood Warning	LWX	Montgomery, Prince George's	11 hr
Jun 20, 11:53 PM EDT	Areal Flood Warning	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	6 hr

Nearby

Tornado Warnings in Maryland, 2015 Every tornado warning in 2015 Tornadoes 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.