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National Weather ServiceFlood AdvisoryVTEC FA.Y, FL.YArchive to October 1, 2026

Flood Advisory: what it means and how often it is issued

The National Weather Service issued 10,035 flood advisories in 2025 and 9,192 a year on average in 2008-2025; Texas, Florida and New Mexico got the most in 2021-2025. 2026 through September: 8,810, 6% above the average of 8,347 for those months in 2008-2025.

What is a flood advisory?

A flood advisory covers flooding that is less serious than a warning, such as water on roads or in low-lying areas, that is still a hazard to drivers and walkers. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful.

Warning, watch or advisory: the three levels compared

Source: National Weather Service directives and glossary.

How many flood advisories a year?

10,035 flood advisories in 2025
5k10k15k2008: 6,18820082009: 7,99920092010: 8,91820102011: 7,93020112012: 6,75420122013: 10,18420132014: 9,72820142015: 10,26320152016: 8,69720162017: 9,71620172018: 11,71420182019: 9,92820192020: 8,04420202021: 11,09720212022: 10,11320222023: 9,53420232024: 8,60820242025: 10,03520252026: 8,83620262008-2025 average 9,1922026 through September: 8,8365k10k15k2008: 6,18820082009: 7,9992010: 8,91820102011: 7,9302012: 6,75420122013: 10,1842014: 9,72820142015: 10,2632016: 8,69720162017: 9,7162018: 11,71420182019: 9,9282020: 8,04420202021: 11,0972022: 10,11320222023: 9,5342024: 8,60820242025: 10,0352026: 8,83620262008-2025 average 9,1922026 through September: 8,8365k10k15k2008: 6,18820082009: 7,9992010: 8,91820102011: 7,9302012: 6,75420122013: 10,1842014: 9,72820142015: 10,2632016: 8,69720162017: 9,7162018: 11,71420182019: 9,9282020: 8,04420202021: 11,0972022: 10,11320222023: 9,5342024: 8,60820242025: 10,0352026: 8,83620262008-2025 average 9,1922026 through September: 8,8365k10k15k2008: 6,18820082009: 7,9992010: 8,9182011: 7,9302012: 6,7542013: 10,1842014: 9,7282015: 10,26320152016: 8,6972017: 9,7162018: 11,7142019: 9,9282020: 8,04420202021: 11,0972022: 10,1132023: 9,5342024: 8,6082025: 10,0352026: 8,83620262008-2025 average 9,1922026 through September: 8,836

National count: each flood advisory counted once, whatever the number of states it covers. 2026 is an outline: the year is not over.

The numbers
YearCount
2026 (through September)8,836
202510,035
20248,608
20239,534
202210,113
202111,097
20208,044
20199,928
201811,714
20179,716
20168,697
201510,263
20149,728
201310,184
20126,754
20117,930
20108,918
20097,999
20086,188

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?

Flood Advisories by month, 2008-2025
20k40kJan: 3,947JanFeb: 4,810FebMar: 6,374MarApr: 8,366AprMay: 18,190MayJun: 23,073JunJul: 36,289JulAug: 31,331AugSep: 17,857SepOct: 7,245OctNov: 3,660NovDec: 4,308Dec36,28920k40kJan: 3,947JanFeb: 4,810FebMar: 6,374MarApr: 8,366AprMay: 18,190MayJun: 23,073JunJul: 36,289JulAug: 31,331AugSep: 17,857SepOct: 7,245OctNov: 3,660NovDec: 4,308Dec36,28920k40kJan: 3,947JanFeb: 4,810FebMar: 6,374MarApr: 8,366AprMay: 18,190MayJun: 23,073JunJul: 36,289JulAug: 31,331AugSep: 17,857SepOct: 7,245OctNov: 3,660NovDec: 4,308Dec36,28920k40kJan: 3,947JFeb: 4,810FMar: 6,374MApr: 8,366AMay: 18,190MJun: 23,073JJul: 36,289JAug: 31,331ASep: 17,857SOct: 7,245ONov: 3,660NDec: 4,308D36,289

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.

Which states get the most flood advisories?

Texas gets the most: 1,239 a year in 2021-2025
TexasTexas: 1,2391,239FloridaFlorida: 868868New MexicoNew Mexico: 723723OklahomaOklahoma: 495495KentuckyKentucky: 491491Puerto RicoPuerto Rico: 491491CaliforniaCalifornia: 475475North CarolinaNorth Carolina: 439439TennesseeTennessee: 437437ArizonaArizona: 367367TexasTexas: 1,2391,239FloridaFlorida: 868868New MexicoNew Mexico: 723723OklahomaOklahoma: 495495KentuckyKentucky: 491491Puerto RicoPuerto Rico: 491491CaliforniaCalifornia: 475475North CarolinaNorth Carolina: 439439TennesseeTennessee: 437437ArizonaArizona: 367367TexasTexas: 1,2391,239FloridaFlorida: 868868New MexicoNew Mexico: 723723OklahomaOklahoma: 495495KentuckyKentucky: 491491Puerto RicoPuerto Rico: 491491CaliforniaCalifornia: 475475North CarolinaNorth Carolina: 439439TennesseeTennessee: 437437ArizonaArizona: 367367TexasTexas: 1,2391,239FloridaFlorida: 868868New MexicoNew Mexico: 723723OklahomaOklahoma: 495495KentuckyKentucky: 491491Puerto RicoPuerto Rico: 491491CaliforniaCalifornia: 475475North CarolinaNorth Carolina: 439439TennesseeTennessee: 437437ArizonaArizona: 367367

Yearly average per state, 2021-2025. A flood advisory covering two states counts in both.

StateA year, 2021-2025A year, 2008-20252025
Texas1,2391,1821,214
Florida868638873
New Mexico723691501
Oklahoma495327786
Kentucky491467607
Puerto Rico491445602
California475296655
North Carolina439439482
Tennessee437356449
Arizona367380286
Alabama312251278
New York270280124
Virginia260212295
South Carolina252277267
Georgia242217352
Colorado224235161
Missouri210188238
Pennsylvania20827818
Indiana202210296
Ohio192230196
Illinois172238199
Mississippi161116136
Louisiana157148161
Arkansas157143227
Nebraska146133202
New Jersey12614725
Nevada124100112
Hawaii12215591
Kansas11597153
Montana976684
Maine846442
Michigan83142104
Wisconsin697870
Connecticut658134
Utah625133
Idaho594928
Washington565236
Alaska545063
Wyoming524426
New Hampshire364013
Minnesota314240
West Virginia313028
Oregon252433
North Dakota244537
Delaware21400
Maryland20426
Massachusetts15583
Iowa143018
Vermont12225
South Dakota7240
Rhode Island0140

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