Alert archive / Maryland / Tornado Warnings in 2020
Tornado Warning 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this tornado warning at Sep 3, 2020, 4:36 PM EDT for 4 counties in Maryland. It was in force for 24 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
- Sep 3, 2020, 4:36 PM EDT (20:36 UTC)
- Expired
- Sep 3, 2020, 5:00 PM EDT
- In force
- 24 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Baltimore County, MD, Carroll County, MD, City of Baltimore, MD, Howard County, MD
The radar
The Sterling radar (KLWX), 73 km from the middle of the area, began a volume at 20:38 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 |
|---|---|---|---|
| Sep 3, 3:42 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.6 hours before the alert went out and 68 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
- 12 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
706
WFUS51 KLWX 032036
TORLWX
MDC005-013-027-510-032100-
/O.NEW.KLWX.TO.W.0021.200903T2036Z-200903T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
436 PM EDT Thu Sep 3 2020
The National Weather Service in Sterling Virginia has issued a
* Tornado Warning for...
Southeastern Carroll County in north central Maryland...
Northwestern Baltimore City in northern Maryland...
Northeastern Howard County in central Maryland...
Southwestern Baltimore County in northern Maryland...
* Until 500 PM EDT.
* At 436 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Randallstown, or near Historic Ellicott City,
moving east 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...
Ellicott City and Randallstown around 440 PM EDT.
Catonsville, Owings Mills and Milford Mill around 450 PM EDT.
Lochearn around 455 PM EDT.
Pikesville, Towson and Woodlawn around 500 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Garrison, Mcdonogh, Ruxton, Daniels, Marriottsville, Woodstock,
Granite and Riderwood.
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 3931 7691 3940 7690 3941 7660 3926 7662
TIME...MOT...LOC 2036Z 278DEG 21KT 3935 7686
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BKF2 follow-up statements
550
WWUS51 KLWX 032048
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
448 PM EDT Thu Sep 3 2020
MDC013-032057-
/O.CAN.KLWX.TO.W.0021.000000T0000Z-200903T2100Z/
Carroll MD-
448 PM EDT Thu Sep 3 2020
...THE TORNADO WARNING FOR SOUTHEASTERN CARROLL COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM EDT for northern and
central Maryland.
LAT...LON 3931 7686 3940 7684 3941 7660 3927 7662
TIME...MOT...LOC 2047Z 273DEG 22KT 3935 7677
$$
MDC005-027-510-032100-
/O.CON.KLWX.TO.W.0021.000000T0000Z-200903T2100Z/
Baltimore City MD-Howard MD-Baltimore MD-
448 PM EDT Thu Sep 3 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
NORTHEASTERN HOWARD AND SOUTHWESTERN BALTIMORE COUNTIES AND
NORTHWESTERN BALTIMORE CITY...
At 447 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Milford Mill, or near Pikesville, moving east 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...
Pikesville around 500 PM EDT.
Towson around 505 PM EDT.
Baltimore around 515 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Ruxton, Daniels, Garrison and Mcdonogh.
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 3931 7686 3940 7684 3941 7660 3927 7662
TIME...MOT...LOC 2047Z 273DEG 22KT 3935 7677
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BKF102
WWUS51 KLWX 032056
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
456 PM EDT Thu Sep 3 2020
MDC005-027-510-032106-
/O.EXP.KLWX.TO.W.0021.000000T0000Z-200903T2100Z/
Baltimore City MD-Howard MD-Baltimore MD-
456 PM EDT Thu Sep 3 2020
...THE TORNADO WARNING FOR NORTHEASTERN HOWARD AND SOUTHWESTERN
BALTIMORE COUNTIES AND NORTHWESTERN BALTIMORE CITY WILL EXPIRE AT 500
PM EDT...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, damaging winds remain likely and a Severe
Thunderstorm Warning remains in effect for the area.
A Tornado Watch remains in effect until 1000 PM EDT for northern and
central Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sterling Virginia.
LAT...LON 3931 7686 3940 7684 3941 7660 3927 7662
TIME...MOT...LOC 2056Z 273DEG 20KT 3935 7673
$$
BKFThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:02 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 43 min |
| Sep 2, 8:45 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 9 min |
| Sep 3, 3:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 45 min |
| Sep 3, 3:41 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 49 min |
| Sep 3, 3:43 PM EDT | Tornado Warning | LWX | Carroll, Frederick, Howard | 19 min |
| Sep 3, 4:07 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 38 min |
| Sep 3, 4:31 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard, City of Baltimore | 44 min |
| Sep 3, 4:36 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 54 min |
| Sep 3, 4:43 PM EDT | Tornado Warning | LWX | Howard, Montgomery, Prince George's | 32 min |
| Sep 3, 5:05 PM EDT | Tornado Warning | LWX | Baltimore, Harford, City of Baltimore | 40 min |
| Sep 3, 5:10 PM EDT | Tornado Warning | LWX | Montgomery, Prince George's | 35 min |
| Sep 3, 5:14 PM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 6 hr |
| Sep 3, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 59 min |
| Sep 3, 5:27 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Montgomery, Prince George's | 63 min |
| Sep 3, 5:29 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Sep 3, 5:33 PM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 3 hr |
| Sep 3, 5:55 PM EDT | Tornado Warning | LWX | Anne Arundel | 14 min |
| Sep 3, 7:10 PM EDT | Areal Flood Warning | LWX | Prince George's | 2 hr |
| Sep 3, 7:41 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Prince George's | 6 hr |
Nearby
Tornado Warnings in Maryland, 2020Every tornado warning in 2020Tornadoes in 2020
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.