Alert archive / Maryland / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 199, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 18, 2026, 6:24 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 20 min. 1 report 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
- Jul 18, 2026, 6:24 PM EDT (22:24 UTC)
- Expired
- Jul 18, 2026, 6:44 PM EDT
- In force
- 20 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 56 km from the middle of the area, began a volume at 22:23 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 6:24 PM EDT | TSTM WND DMG | 3 Nw Hambleton, MD | 2 trees down at Talbot Country Club. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 18, 1:55 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.4 hours before the alert went out and 120 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
- 1396 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 936 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.1
The text
As transmitted.
401
WUUS51 KPHI 182224
SVRPHI
MDC011-041-182315-
/O.NEW.KPHI.SV.W.0199.260718T2224Z-260718T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
624 PM EDT Sat Jul 18 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Talbot County in eastern Maryland...
Southwestern Caroline County in eastern Maryland...
* Until 715 PM EDT.
* At 624 PM EDT, a severe thunderstorm was located near Oxford, or 9
miles northwest of Cambridge, moving east 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...
Trappe, Preston, Oxford, Hambleton, Choptank, and Windyhill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 900 PM EDT for eastern
Maryland.
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
A Tornado Watch remains in effect until 900 PM EDT for eastern
Maryland.
&&
LAT...LON 3870 7578 3868 7578 3870 7581 3870 7590
3866 7596 3860 7599 3857 7604 3863 7608
3864 7615 3869 7619 3867 7620 3871 7622
3870 7623 3872 7624 3871 7628 3873 7625
3874 7628
TIME...MOT...LOC 2224Z 278DEG 34KT 3865 7621
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS1 follow-up statement
141
WWUS51 KPHI 182244
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
644 PM EDT Sat Jul 18 2026
MDC011-041-182253-
/O.CAN.KPHI.SV.W.0199.000000T0000Z-260718T2315Z/
Talbot MD-Caroline MD-
644 PM EDT Sat Jul 18 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TALBOT AND
SOUTHWESTERN CAROLINE COUNTIES IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
A Tornado Watch remains in effect until 900 PM EDT for eastern
Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3870 7578 3868 7578 3870 7581 3870 7590
3866 7596 3860 7599 3857 7604 3863 7608
3864 7615 3869 7619 3867 7620 3871 7622
3870 7623 3872 7624 3871 7628 3873 7625
3874 7628
TIME...MOT...LOC 2236Z 278DEG 34KT 3862 7597
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 2:12 AM EDT | Heat Advisory | PHI | Caroline, Queen Anne's, Talbot | 17 hr |
| Jul 18, 5:39 AM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 62 min |
| Jul 18, 6:09 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 55 min |
| Jul 18, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 62 min |
| Jul 18, 5:05 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Jul 18, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 61 min |
| Jul 18, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 49 min |
| Jul 18, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 52 min |
| Jul 18, 6:25 PM EDT | Flash Flood Warning | PHI | Caroline, Talbot | 4 hr |
| Jul 18, 6:27 PM EDT | Tornado Warning | PHI | Caroline | 33 min |
| Jul 18, 6:40 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 36 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2026Every severe thunderstorm warning in 2026
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.