July 4, 2026 hail storm near Thurmont, MD. Radar-confirmed hail track and contractor lead lists available.
NWS WARNING AREA · Thurmont Metro · Jul 4, 2026
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This storm generated 41 NWS alert zones. Pro access covers the complete storm track and all addresses across every zone.
Stafford, VA
Alert issued Sat, Jul 4 · 9:40 PM UTC
Ranson, WV
Alert issued Sat, Jul 4 · 9:45 PM UTC
Thurmont, MD
10,570 addresses in warning area
Alert issued Sat, Jul 4 · 10:04 PM UTC
Newville, PA
Alert issued Sat, Jul 4 · 10:08 PM UTC
Thurmont, MD
1,335 addresses in warning area
Alert issued Sat, Jul 4 · 10:15 PM UTC
Newburg, MD
5,398 addresses in warning area
Alert issued Sat, Jul 4 · 10:26 PM UTC
Brookeville, MD
Alert issued Sat, Jul 4 · 10:27 PM UTC
La Plata, MD
Alert issued Sat, Jul 4 · 10:32 PM UTC
Mechanicsburg, PA
Alert issued Sat, Jul 4 · 10:37 PM UTC
Glen Burnie, MD
22,254 addresses in warning area
Alert issued Sat, Jul 4 · 10:37 PM UTC
New Oxford, PA
Alert issued Sat, Jul 4 · 10:39 PM UTC
Emmitsburg, MD
Alert issued Sat, Jul 4 · 10:45 PM UTC
The Plains, VA
Alert issued Sat, Jul 4 · 10:49 PM UTC
Bowie, MD
Alert issued Sat, Jul 4 · 10:52 PM UTC
Marriottsville, MD
4,307 addresses in warning area
Alert issued Sat, Jul 4 · 10:54 PM UTC
Prince Frederick, MD
Alert issued Sat, Jul 4 · 10:57 PM UTC
Curtis Bay, MD
Alert issued Sat, Jul 4 · 11:03 PM UTC
Lebanon, PA
Alert issued Sat, Jul 4 · 11:08 PM UTC
Red Lion, PA
Alert issued Sat, Jul 4 · 11:10 PM UTC
Kent, DE
Alert issued Sat, Jul 4 · 11:17 PM UTC
Sparks Glencoe, MD
Alert issued Sat, Jul 4 · 11:25 PM UTC
Middle River, MD
4,851 addresses in warning area
Alert issued Sat, Jul 4 · 11:26 PM UTC
Saint Michaels, MD
Alert issued Sat, Jul 4 · 11:29 PM UTC
Cambridge, MD
Alert issued Sat, Jul 4 · 11:31 PM UTC
Rock Hall, MD
Alert issued Sat, Jul 4 · 11:33 PM UTC
Paradise, PA
Alert issued Sat, Jul 4 · 11:38 PM UTC
Honey Brook, PA
Alert issued Sat, Jul 4 · 11:44 PM UTC
Havre de Grace, MD
12,892 addresses in warning area
Alert issued Sat, Jul 4 · 11:47 PM UTC
Kennedyville, MD
236 addresses in warning area
Alert issued Sun, Jul 5 · 12:17 AM UTC
Norristown, PA
Alert issued Sun, Jul 5 · 12:25 AM UTC
Emmaus, PA
Alert issued Sun, Jul 5 · 12:28 AM UTC
Newark, DE
Alert issued Sun, Jul 5 · 12:38 AM UTC
Newburg, MD
Alert issued Sun, Jul 5 · 12:38 AM UTC
Clayton, DE
Alert issued Sun, Jul 5 · 12:48 AM UTC
Woodbury, NJ
Alert issued Sun, Jul 5 · 12:59 AM UTC
Frankford, DE
Alert issued Sun, Jul 5 · 1:07 AM UTC
Cherry Hill, NJ
Alert issued Sun, Jul 5 · 1:13 AM UTC
Cambridge, MD
Alert issued Sun, Jul 5 · 1:31 AM UTC
Strathmere, NJ
Alert issued Sun, Jul 5 · 1:41 AM UTC
Whiting, NJ
Alert issued Sun, Jul 5 · 1:50 AM UTC
Seaford, DE
Alert issued Sun, Jul 5 · 1:52 AM UTC
Thurmont, MD — Early evening on July 4, 2026, a multi-cell thunderstorm produced hail up to 2.38 inches in diameter across parts of Thurmont. The system generated a sustained sequence of warnings and radar detections across the local area.
The first NWS alert associated with this event issued at 6:04 PM EDT. The sequence totaled 39 alerts through 9:52 PM EDT. Most notices carried NWS warning only language for 0.75-inch hail. Dual-polarization radar detected a significant core at 6:15 PM EDT that registered a radar-derived hail signature near 2.07 inches in diameter. A second radar-detected peak occurred at 7:38 PM EDT with a 1.07-inch signature. A spotter-verified report of 0.75-inch hail arrived at 7:26 PM EDT. Alerts continued intermittently for the remainder of the evening, largely indicating quarter-size hail across the broader warning area.
The event behaved like a multi-cell complex with repeated updraft redevelopment. Warnings and radar detections moved through the Thurmont metro area over roughly a four-hour span. Local advisories were the primary delivery mechanism for immediate public notice; radar-derived detections and a spotter report provided additional ground-radar corroboration.
Observed hail sizes ranged from roughly 0.75 inch to a maximum verified 2.38 inches in the Thurmont area. Hail at or above 2.38 inches is large enough to crack or shatter vehicle glazing and to cause severe damage to asphalt shingles and thin metal roofing. Hail in the 1.0-inch range can dent vehicles and damage siding and skylights. Quarter-size hail reported repeatedly across warning polygons can still result in cosmetic panel dents and broken exterior fixtures when driven by high winds.
A spotter-verified 0.75-inch report at 7:26 PM EDT indicates localized ground confirmation in the western sector of the metro area. The sequence of NWS warning only notices suggests widespread quarter-size hail signatures along the warning corridor, punctuated by the radar-detected larger cores at 6:15 PM EDT and 7:38 PM EDT.
Prioritize roof and glazing inspections in areas along the radar-detected cores and where spotter reports originated. Inspect for fractured shingle tabs, displaced granules, cracked vents, dented metal flashing, and fractured skylight glazing. Photograph damage with a visible scale and note the time and location for each image. Check vehicles and light external equipment for panel dents and glass damage. Record serial numbers and VINs where applicable for claims.
Perform temporary water-intrusion mitigation immediately where holes or split shingles are found. Apply secure tarps and replace failed flashing to prevent secondary water damage. Document all temporary repairs and schedule full-condition assessments for roofing and exterior cladding within 48–72 hours. Coordinate with property owners on insurance timelines and provide clear written estimates for final repairs.
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Address data is sourced from the US National Address Database (NOAA/USDOT). Inclusion of an address does not guarantee physical damage occurred. Confidence scores are radar-derived estimates. Data Accuracy Disclaimer