Alert archive / Maryland / Tornado Warnings in 2021

Tornado Warning 12, NWS Baltimore/Washington

June 3, 2021Baltimore County, Harford County, Maryland

NWS Baltimore/Washington issued this tornado warning at Jun 3, 2021, 4:51 PM EDT for Baltimore County, Harford County, Maryland. It was in force for 9 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 3, 2021, 4:51 PM EDT (20:51 UTC)
Expired
Jun 3, 2021, 5:00 PM EDT
In force
9 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Tornado
Radar indicated

Counties Baltimore County, MD, Harford County, MD

The radar

The Sterling radar (KLWX), 104 km from the middle of the area, began a volume at 20:55 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.

What was reported inside it

TimeReportWhereRemark
Jun 3, 4:51 PM EDTTORNADO3 Nw Long Green, MDNWS STORM SURVEY TEAM CONFIRMS EF-1 TORNADO IN JACKSONVILLE, MD, ON THURSDAY JUNE 3, 2021. TIME 451-455 PM EDT, ESTIMATED PEAK WINDS 95 MPH, PATH LENGTH 2.0 MILES, MAXIMUM WIDTH 120 YARDS.
Jun 3, 4:58 PM EDTTSTM WND DMG3 Nnw Long Green, MDNUMEROUS TREES DOWN NEAR THE INTERSECTION OF SWEET AIR ROAD AND MANOR ROAD
Jun 3, 4:58 PM EDTTSTM WND DMG3 Nw Long Green, MDCONCENTRATION OF TREE DAMAGE ALONG OVERSHOT COURT. COUNTY 911 ESTIMATES DOZENS OF TREES DAMAGED.
Jun 3, 5:01 PM EDTTSTM WND DMG3 Nne Long Green, MDTREE DOWN NEAR RT 145 AND GREENE RD
Jun 3, 5:04 PM EDTTSTM WND DMG2 Nnw Long Green, MDPOWERLINE WIRES DOWN NEAR THE INTERSECTION OF KINCAID ROAD AND MANOR ROAD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 3, 2:48 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 100 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 12:00Z on 2021-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2021-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.19395878Sfc1 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
73 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
511 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

247 
WFUS51 KLWX 032051
TORLWX
MDC005-025-032100-
/O.NEW.KLWX.TO.W.0012.210603T2051Z-210603T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
451 PM EDT Thu Jun 3 2021

The National Weather Service in Sterling Virginia has issued a

* Tornado Warning for...
  West central Harford County in northern Maryland...
  Northeastern Baltimore County in northern Maryland...

* Until 500 PM EDT.
    
* At 451 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Cockeysville, moving northeast at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...For those in the direct path of a tornado touchdown, 
           flying debris will be dangerous to those caught without 
           shelter. Damage to roofs, siding, and windows may occur. 
           Mobile homes may be damaged or destroyed. Tree damage is 
           likely.

* This dangerous storm will be near...
  Bel Air North, Fallston and Jarrettsville around 500 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Jacksonville.

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 outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3949 7656 3952 7658 3960 7646 3954 7641
TIME...MOT...LOC 2051Z 240DEG 27KT 3952 7655 

TORNADO...RADAR INDICATED
HAIL...<.75

$$

CJL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 8:56 AM EDTFlash Flood WatchLWXBaltimore, Carroll, Cecil, Frederick, Harford, Howard and 2 more13 hr
Jun 3, 3:14 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery46 min
Jun 3, 3:47 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Howard, Montgomery43 min
Jun 3, 3:50 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington40 min
Jun 3, 4:12 PM EDTSevere Thunderstorm WarningLWXBaltimore33 min
Jun 3, 4:20 PM EDTSevere Thunderstorm WarningLWXBaltimore, Carroll, Howard, City of Baltimore40 min
Jun 3, 4:43 PM EDTSevere Thunderstorm WarningLWXBaltimore, Cecil, Harford, City of Baltimore47 min
Jun 3, 4:54 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery36 min
Jun 3, 4:58 PM EDTAreal Flood WarningLWXBaltimore, Harford6 hr
Jun 3, 4:59 PM EDTTornado WarningLWXBaltimore, Harford16 min
Jun 3, 5:26 PM EDTSevere Thunderstorm WarningLWXBaltimore, Cecil, Harford49 min
Jun 3, 5:27 PM EDTSevere Thunderstorm WarningLWXHoward, Montgomery33 min
Jun 3, 5:55 PM EDTAreal Flood WarningLWXBaltimore, Harford34 min
Jun 3, 6:03 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Montgomery, Prince George's28 min
Jun 3, 6:14 PM EDTSevere Thunderstorm WarningLWXCecil, Harford34 min
Jun 3, 6:29 PM EDTFlash Flood Warning Considerable damage threatLWXBaltimore, Harford3 hr
Jun 3, 6:36 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford39 min
Jun 3, 6:46 PM EDTAreal Flood WarningLWXCecil4 hr
Jun 3, 6:53 PM EDTTornado WarningLWXHarford10 min

Nearby

Tornado Warnings in Maryland, 2021Every tornado warning in 2021Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.