Delaware Storm History: Recent Major Storm Days

By StormAuditor Editorial Team · Published 2026-08-11 · Updated 2026-08-20

Based on public NOAA and National Weather Service records, published under StormAuditor's methodology and data-source standards. Radar-derived hail sizes are estimates unless attributed to a ground report.

Delaware experiences a variety of severe weather events, including thunderstorms with damaging winds and large hail. Understanding the precise dates and impacts of these storms is crucial for property owners, contractors, and insurers.

Delaware sits along the Eastern Seaboard. That makes it susceptible to severe weather, from summer thunderstorms to coastal nor'easters. Pinpointing Delaware storm days with significant hail or damaging winds is essential. It matters for any property owner, contractor, or insurance professional doing date-of-loss research. StormAuditor provides detailed historical weather insights. We help you understand the conditions that may have affected a specific property on any given day.

What Constitutes a Major Storm Day in Delaware?

The National Weather Service (NWS) defines a severe thunderstorm by three criteria. It has hail 1.00 inch (quarter-sized) or larger, wind gusts of 58 mph (50 knots) or greater, or a tornado. 'Significant severe' events escalate further. They involve hail 2.00 inches (hen egg-sized) or larger, or wind gusts of 75 mph or greater. For residential properties, hail impacts of 1.00"-1.25" are typically where asphalt shingles begin to show functional damage. Wind gusts exceeding 75-85 mph can lead to widespread shingle blow-off.

Recent Notable Storm Days in Delaware

StormAuditor tracks severe weather events across Delaware. We consolidate data from various sources to give a clear picture of past conditions. Below are some recent Delaware storm days with notable wind activity:

  • July 5, 2026 — 1 S Odessa (New Castle County) — 64.0 mph thunderstorm wind gust
  • May 27, 2026 — 1 N Highland Acres (Kent County) — 50.0 mph thunderstorm wind gust
  • June 6, 2026 — 1 NE Midvale (Kent County) — 48.0 mph thunderstorm wind gust

These dates represent reported severe weather impacts. They mark days when properties in various Delaware locations may have faced strong winds or associated damage. Hail reports for Delaware in our recent data are sparse, but hail can and does occur. Want a complete list of historical storm events, including hail, wind, and tornado reports? Explore StormAuditor's tools.

How StormAuditor Measures Past Weather Events

StormAuditor uses a robust methodology to provide accurate historical weather estimates:

  • Hail: Our SAHE-2 (Storm Auditor Hail Estimate v2) system primarily uses radar-derived MESH (Maximum Estimated Sizes of Hail) data from MRMS swaths. Human-observed SPC storm reports and NWS severe thunderstorm warnings complement this data. Together, they let us estimate the maximum hail size that likely occurred at a specific location.
  • Wind: Our SAWE-2 (Storm Auditor Wind Estimate) uses an advanced objective analysis. It integrates ASOS/AWOS station observations, measured National Weather Service (NWS) Local Storm Reports (LSRs), and background wind fields. This creates a detailed, station-consistent wind estimate for a given area. One point deserves emphasis. Only measured wind values from stations, or LSRs with measured qualifiers, are used in our analysis. Estimated gust LSRs are never used as values.

These methods anchor StormAuditor's reports in credible data. Sources include NOAA, NWS, SPC, IEM, and NCEI. Our goal is reliable Delaware storm data for your research needs.

How to Research a Date of Loss in Delaware

Need the weather conditions on a specific date at a particular Delaware address? StormAuditor offers powerful tools:

1. Address Lookup: Use our /address-lookup tool. It generates a property-level historical weather report with specific hail, wind, and NWS warning data for your location.

2. Date of Loss Research: Our dedicated /date-of-loss-weather-research workflow guides you through finding severe weather events for a given timeframe and location.

3. General Weather History: Explore our /weather-on-this-date tool. It gives an overview of weather conditions on any historical date for a specified region.

These tools help you conduct effective date-of-loss research for any property across Delaware.

Practical Guidance for Delaware Storm Days

Accurate historical weather data is paramount for homeowners, contractors, adjusters, and attorneys. Understanding the conditions during a Delaware storm day helps in three ways. It supports damage assessment, claim substantiation, and repair planning. StormAuditor provides comprehensive weather data. Still, remember that our estimates cover weather conditions, not damage causation. Always consult qualified inspectors and engineers for specific damage assessments.

Limitations

StormAuditor draws on extensive data, but it has inherent limits you should understand. Radar-derived hail estimates (MESH) can sometimes under-estimate wet hail or over-estimate in areas of very high reflectivity. Station-based wind observations are accurate at their location. Even so, they may miss localized microbursts between stations. Peak gusts could therefore exceed reported values in specific, small areas. NWS warning polygons indicate an area and time window under a warning. A property inside a polygon was under a warning but did not necessarily experience the peak conditions. StormAuditor provides estimates of weather conditions, not measurements. We do not provide legal, insurance, or engineering advice. We never claim to 'prove' damage was caused by an event. Instead, we provide the weather context for qualified professionals to evaluate.

Related StormAuditor Tools

FAQ

When was the last major wind storm in Delaware?

Recent data shows a severe thunderstorm wind gust of 64.0 mph on July 5, 2026, reported near Odessa, Delaware. Other days also featured significant wind damage reports. These point to strong straight-line winds.

How do I find storm history for my Delaware address?

Use StormAuditor's /address-lookup tool and enter your specific Delaware address. It generates a detailed report of historical hail, wind, and NWS warning data for that location.

What size hail is considered severe in Delaware?

In Delaware, as nationwide, the NWS considers hail 1.00 inch (quarter-sized) or larger as severe. Hail 1.75 inches (golf ball size) and larger frequently causes window and skylight breakage. Even 1.00 inch hail can damage asphalt shingles.

Can StormAuditor tell me if my roof was damaged by a storm?

StormAuditor can provide comprehensive historical weather data for your specific property on a given date. This includes estimated hail sizes and wind gusts. However, we do not assess damage. Always consult a qualified roof inspector or engineer to determine if your roof sustained damage.

What are typical wind speeds that cause asphalt shingle damage?

Asphalt shingles often begin to show functional damage, such as tab creasing and lifting, with wind gusts between 55-70 mph. Widespread blow-off for older 3-tab shingles typically occurs above 75-85 mph. For newer architectural shingles, it occurs above 90-100 mph.

Does StormAuditor cover all types of storms?

StormAuditor focuses on historical severe weather events as defined by NWS criteria. These are hail, wind, and tornadoes. Coverage includes thunderstorm wind gusts, non-thunderstorm wind events, and the presence of hail or tornadoes. For specific details on our coverage, please visit our /data-sources page.