Alert archive / Maryland / Tornado Warnings in 2021
Tornado Warning 18, NWS Baltimore/Washington
NWS Baltimore/Washington issued this tornado warning at Jul 8, 2021, 10:31 PM EDT for Saint Mary's County, Maryland. It was in force for 29 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
- Jul 8, 2021, 10:31 PM EDT (02:31 UTC)
- Expired
- Jul 8, 2021, 11:00 PM EDT
- In force
- 29 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Saint Mary's County, MD
The radar
The Dover AFB radar (KDOX), 114 km from the middle of the area, began a volume at 02:35 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 |
|---|---|---|---|
| Jul 8, 1:50 PM EDT | Tornado Watch | SPC | 11 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.5 hours before the alert went out and 92 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
- 440 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted.
754
WFUS51 KLWX 090231
TORLWX
MDC037-090300-
/O.NEW.KLWX.TO.W.0018.210709T0231Z-210709T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Baltimore MD/Washington DC
1031 PM EDT Thu Jul 8 2021
The National Weather Service in Sterling Virginia has issued a
* Tornado Warning for...
Southeastern St. Marys County in southern Maryland...
* Until 1100 PM EDT.
* At 1031 PM EDT, a severe thunderstorm capable of producing a
tornado was located over Saint Inigoes Creek, moving northwest at
35 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...
Saint George Island around 1035 PM EDT.
Saint Marys River and Saint Marys City around 1040 PM EDT.
Lexington Park, Piney Point and Tall Timbers around 1045 PM EDT.
White Point Beach around 1055 PM EDT.
Other locations impacted by this tornadic thunderstorm include Point
Lookout, Dameron, Great Mills, Redgate, Valley Lee, Drayden,
Scotland, Saint Inigoes, Park Hall and Callaway.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3804 7631 3803 7633 3809 7648 3820 7660
3821 7667 3835 7653 3817 7632 3815 7631
3814 7630
TIME...MOT...LOC 0231Z 118DEG 29KT 3814 7640
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KLW2 follow-up statements
982
WWUS51 KLWX 090242
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
1042 PM EDT Thu Jul 8 2021
MDC037-090300-
/O.CON.KLWX.TO.W.0018.000000T0000Z-210709T0300Z/
St. Marys MD-
1042 PM EDT Thu Jul 8 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT FOR
SOUTHEASTERN ST. MARYS COUNTY...
At 1042 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Saint Marys River, moving northwest at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...For those in the direct path of a tornado touchdown, flying
debris will be dangerous to those caught without shelter.
Damage to roofs, siding, and windows may occur. Mobile
homes may be damaged or destroyed. Tree damage is likely.
This tornadic thunderstorm will remain over mainly rural areas of
southeastern St. Marys County, including the following locations...
Dameron, Great Mills, Valley Lee, Drayden, Saint Inigoes, Park Hall,
Callaway and Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3810 7637 3809 7648 3818 7658 3830 7647
3817 7632
TIME...MOT...LOC 0242Z 118DEG 29KT 3818 7650
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KLW858
WWUS51 KLWX 090259
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
1059 PM EDT Thu Jul 8 2021
MDC037-090309-
/O.EXP.KLWX.TO.W.0018.000000T0000Z-210709T0300Z/
St. Marys MD-
1059 PM EDT Thu Jul 8 2021
...THE TORNADO WARNING FOR SOUTHEASTERN ST. MARYS COUNTY WILL EXPIRE
AT 1100 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
A Tornado Watch remains in effect until 200 AM EDT for southern
Maryland.
LAT...LON 3810 7637 3809 7648 3818 7658 3830 7647
3817 7632
TIME...MOT...LOC 0259Z 118DEG 29KT 3824 7664
$$
KLWThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 11:13 PM EDT | Flash Flood Warning | LWX | Saint Mary's | 76 min |
| Jul 8, 11:13 PM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 17 min |
| Jul 9, 12:40 AM EDT | Coastal Flood Warning | LWX | Saint Mary's | 2 hr |
| Jul 9, 12:47 AM EDT | Coastal Flood Advisory | LWX | Charles | 2 hr |
| Jul 9, 4:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 49 min |
| Jul 9, 5:02 PM EDT | Areal Flood Warning | LWX | Prince George's | 3 hr |
| Jul 9, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's | 45 min |
| Jul 9, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 51 min |
| Jul 9, 6:03 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 57 min |
| Jul 9, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 31 min |
| Jul 9, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 41 min |
| Jul 9, 6:43 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 32 min |
| Jul 9, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 50 min |
| Jul 9, 7:05 PM EDT | Areal Flood Warning | LWX | Calvert, Charles, Prince George's | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.