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National Weather ServiceMarylandSevere Thunderstorm WarningArchive to October 1, 2026

Severe Thunderstorm Warnings in Maryland

The National Weather Service issued 287 severe thunderstorm warnings for Maryland in 2025 and 265 a year on average in 2008-2025; in 2021-2025 it had the 33rd most of any state. 2026 through September: 366, 42% above the average of 258 for those months in 2008-2025. Prince Georges was covered most often (919 times since 2008).

How many severe thunderstorm warnings does Maryland get?

287 severe thunderstorm warnings for Maryland in 2025
2004006002008: 29920082009: 19620092010: 21820102011: 30320112012: 26320122013: 16720132014: 19420142015: 19220152016: 24120162017: 26120172018: 19420182019: 46220192020: 35420202021: 36020212022: 27420222023: 29820232024: 21220242025: 28720252026: 36620262008-2025 average 2652026 through September: 3662004006002008: 29920082009: 1962010: 21820102011: 3032012: 26320122013: 1672014: 19420142015: 1922016: 24120162017: 2612018: 19420182019: 4622020: 35420202021: 3602022: 27420222023: 2982024: 21220242025: 2872026: 36620262008-2025 average 2652026 through September: 3662004006002008: 29920082009: 1962010: 21820102011: 3032012: 26320122013: 1672014: 19420142015: 1922016: 24120162017: 2612018: 19420182019: 4622020: 35420202021: 3602022: 27420222023: 2982024: 21220242025: 2872026: 36620262008-2025 average 2652026 through September: 3662004006002008: 29920082009: 1962010: 2182011: 3032012: 2632013: 1672014: 1942015: 19220152016: 2412017: 2612018: 1942019: 4622020: 35420202021: 3602022: 2742023: 2982024: 2122025: 2872026: 36620262008-2025 average 2652026 through September: 366

Every severe thunderstorm warning that covered part of Maryland. 2026 is an outline: the year is not over.

The numbers
YearCount
2026 (through September)366
2025287
2024212
2023298
2022274
2021360
2020354
2019462
2018194
2017261
2016241
2015192
2014194
2013167
2012263
2011303
2010218
2009196
2008299

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.

When in the year does Maryland get them?

Maryland's severe thunderstorm warnings by month, 2008-2025
5001k1.5kJan: 12JanFeb: 85FebMar: 91MarApr: 337AprMay: 575MayJun: 1,154JunJul: 1,257JulAug: 870AugSep: 268SepOct: 33OctNov: 68NovDec: 25Dec1,2575001k1.5kJan: 12JanFeb: 85FebMar: 91MarApr: 337AprMay: 575MayJun: 1,154JunJul: 1,257JulAug: 870AugSep: 268SepOct: 33OctNov: 68NovDec: 25Dec1,2575001k1.5kJan: 12JanFeb: 85FebMar: 91MarApr: 337AprMay: 575MayJun: 1,154JunJul: 1,257JulAug: 870AugSep: 268SepOct: 33OctNov: 68NovDec: 25Dec1,2575001k1.5kJan: 12JFeb: 85FMar: 91MApr: 337AMay: 575MJun: 1,154JJul: 1,257JAug: 870ASep: 268SOct: 33ONov: 68NDec: 25D1,257

Sum of 2008-2025; the busiest month is labelled.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.

Where in Maryland?

County or forecast zoneSince 2008Since 2023Last issued
Prince Georges919189September 4, 2026
Montgomery848164September 4, 2026
Anne Arundel715129September 4, 2026
Baltimore712161September 4, 2026
Frederick704151September 4, 2026
Washington633134September 4, 2026
Charles614131September 4, 2026
Queen Anne's533137September 4, 2026
Howard532108September 4, 2026
Caroline506132September 4, 2026
Harford497118September 2, 2026
Carroll490107September 4, 2026

The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.

The latest severe thunderstorm warnings for Maryland in AreaZine's record

This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.

Source: National Weather Service alerts (api.weather.gov).

What is a severe thunderstorm warning?

A severe thunderstorm warning means a storm is producing, or is about to produce, hail one inch across or larger and/or winds of 58 mph or more. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Maryland.