Alert archive / Maryland / Tornado Warnings in 2021
Tornado Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Sep 1, 2021, 5:01 PM EDT for Kent County, New Castle County, Delaware; Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 44 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 1, 2021, 5:01 PM EDT (21:01 UTC)
- Expired
- Sep 1, 2021, 5:45 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 45 km from the middle of the area, began a volume at 21:02 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 1, 12:40 PM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.0 hours before the alert went out and 141 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
- 515 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 955 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted.
566
WFUS51 KPHI 012101
TORPHI
DEC001-003-MDC011-029-035-012145-
/O.NEW.KPHI.TO.W.0038.210901T2101Z-210901T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
501 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
Southwestern New Castle County in northern Delaware...
Northwestern Kent County in central Delaware...
Northeastern Queen Anne's County in northeastern Maryland...
Northeastern Caroline County in eastern Maryland...
East central Kent County in northeastern Maryland...
* Until 545 PM EDT.
* At 501 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Goldsboro, or 14 miles west of Dover, moving
northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Smyrna, Clayton, Cheswold, Hartly, Delaney Corner, Green Spring,
Kenton, Leipsic, Henderson, Marydel and Templeville.
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 3906 7575 3909 7584 3936 7578 3930 7545
TIME...MOT...LOC 2101Z 216DEG 25KT 3911 7577
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Staarmann3 follow-up statements
633
WWUS51 KPHI 012110
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
510 PM EDT Wed Sep 1 2021
MDC011-029-035-012120-
/O.CAN.KPHI.TO.W.0038.000000T0000Z-210901T2145Z/
Queen Anne's MD-Caroline MD-Kent MD-
510 PM EDT Wed Sep 1 2021
...THE TORNADO WARNING FOR NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN
CAROLINE AND EAST CENTRAL KENT COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been
cancelled.
A Tornado Watch remains in effect until 1000 PM EDT for central and
northern Delaware...and eastern and northeastern Maryland.
LAT...LON 3931 7549 3930 7549 3912 7571 3913 7575
3936 7576
TIME...MOT...LOC 2110Z 216DEG 25KT 3916 7572
$$
DEC001-003-012145-
/O.CON.KPHI.TO.W.0038.000000T0000Z-210901T2145Z/
New Castle DE-Kent DE-
510 PM EDT Wed Sep 1 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR
SOUTHWESTERN NEW CASTLE AND NORTHWESTERN KENT COUNTIES...
At 510 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Hartly, or 10 miles west of Dover, moving northeast
at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Smyrna, Clayton, Cheswold, Hartly, Delaney Corner, Green Spring and
Kenton.
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 7549 3930 7549 3912 7571 3913 7575
3936 7576
TIME...MOT...LOC 2110Z 216DEG 25KT 3916 7572
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Staarmann914
WWUS51 KPHI 012119
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
519 PM EDT Wed Sep 1 2021
DEC001-003-012145-
/O.CON.KPHI.TO.W.0038.000000T0000Z-210901T2145Z/
New Castle DE-Kent DE-
519 PM EDT Wed Sep 1 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR SOUTH
CENTRAL NEW CASTLE AND NORTHWESTERN KENT COUNTIES...
At 518 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Clayton, or 9 miles northwest of Dover, moving
northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Smyrna, Clayton, Green Spring and Kenton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3919 7564 3922 7575 3935 7569 3931 7549
3930 7549 3923 7558
TIME...MOT...LOC 2118Z 216DEG 32KT 3924 7566
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Staarmann906
WWUS51 KPHI 012136
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
536 PM EDT Wed Sep 1 2021
DEC001-003-012146-
/O.EXP.KPHI.TO.W.0038.000000T0000Z-210901T2145Z/
New Castle DE-Kent DE-
536 PM EDT Wed Sep 1 2021
...THE TORNADO WARNING FOR SOUTH CENTRAL NEW CASTLE AND NORTHWESTERN
KENT COUNTIES WILL EXPIRE AT 545 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM EDT for central and
northern Delaware.
LAT...LON 3919 7564 3922 7575 3935 7569 3931 7549
3930 7549 3923 7558
TIME...MOT...LOC 2136Z 216DEG 25KT 3934 7557
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 6:19 AM EDT | Areal Flood Advisory | PHI | New Castle | 116 min |
| Sep 1, 6:49 AM EDT | Flash Flood Warning | PHI | New Castle | 86 min |
| Sep 1, 8:03 AM EDT | River Flood Warning | PHI | New Castle | 4 hr |
| Sep 1, 2:53 PM EDT | Flash Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 4:59 PM EDT | Tornado Warning | PHI | Kent, Sussex | 46 min |
| Sep 1, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 44 min |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 5:35 PM EDT | Tornado Warning | PHI | Kent, New Castle | 25 min |
| Sep 1, 6:03 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 42 min |
| Sep 1, 6:08 PM EDT | River Flood Warning | PHI | New Castle | 18 hr |
| Sep 1, 6:15 PM EDT | River Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 6:24 PM EDT | Tornado Warning | PHI | New Castle | 16 min |
| Sep 1, 6:38 PM EDT | River Flood Warning | PHI | New Castle | 28 hr |
| Sep 1, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 63 min |
| Sep 1, 7:44 PM EDT | River Flood Warning | PHI | New Castle | 11 hr |
| Sep 1, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 44 min |
| Sep 1, 5:36 PM EDT | Tornado Warning | PHI | Kent | 24 min |
Nearby
Tornado Warnings in Maryland, 2021Tornado Warnings in Delaware, 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.