Alert archive / Maryland / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 307, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 23, 2021, 10:35 AM EDT for Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 40 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 23, 2021, 10:35 AM EDT (14:35 UTC)
- Expired
- Sep 23, 2021, 11:15 AM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 14:38 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 2.6 hours before the alert went out and 137 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- -71 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted.
714
WUUS51 KPHI 231435
SVRPHI
MDC011-029-035-231515-
/O.NEW.KPHI.SV.W.0307.210923T1435Z-210923T1515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1035 AM EDT Thu Sep 23 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Queen Anne's County in northeastern Maryland...
North central Caroline County in eastern Maryland...
Northeastern Kent County in northeastern Maryland...
* Until 1115 AM EDT.
* At 1035 AM EDT, a severe thunderstorm was located near Church Hill,
or 7 miles northeast of Centerville, moving north at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Centreville, Greensboro, Church Hill, Millington, Sudlersville,
Sassafras, Starkey Corner, Morgnec, Massey, Crumpton, Carville,
Hope, Galena, Templeville and Barclay.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3937 7595 3936 7588 3938 7582 3938 7577
3936 7576 3918 7575 3898 7581 3905 7609
TIME...MOT...LOC 1435Z 196DEG 26KT 3910 7594
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Iovino1 follow-up statement
557
WWUS51 KPHI 231453
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1053 AM EDT Thu Sep 23 2021
MDC011-029-035-231515-
/O.CON.KPHI.SV.W.0307.000000T0000Z-210923T1515Z/
Queen Anne's MD-Caroline MD-Kent MD-
1053 AM EDT Thu Sep 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR NORTHEASTERN QUEEN ANNE'S...NORTH CENTRAL CAROLINE AND
NORTHEASTERN KENT COUNTIES...
At 1052 AM EDT, a severe thunderstorm was located over Sudlersville,
or 16 miles northeast of Centerville, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Greensboro, Church Hill, Millington, Sudlersville, Sassafras, Massey,
Crumpton, Hope, Galena, Templeville and Barclay.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3937 7595 3936 7588 3938 7582 3938 7577
3936 7576 3918 7575 3898 7581 3902 7597
3914 7598
TIME...MOT...LOC 1452Z 208DEG 26KT 3921 7585
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 8:08 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 52 min |
| Sep 23, 9:03 AM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's, Talbot | 3 hr |
| Sep 23, 9:31 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 59 min |
| Sep 23, 9:46 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 44 min |
| Sep 23, 9:49 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's, Talbot | 4 hr |
| Sep 23, 10:55 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2021Every severe thunderstorm warning 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.