01 / YEAR-BY-YEAR
EVENT FILE / 33013MINIMUM 5 REPORTS
MERRIMACK · NH
Flash Flood history
NOAA records coded as Flash Flood in Merrimack during the ten complete years from 2016 through 2025.
Reports12NOAA county-coded rows
Population context7.7per 100,000 residents · 2024 ACS denominator 155,967
Injuries0direct + indirect fields
Fatalities0direct + indirect fields
Not a probability
12 reports in ten years does not mean a 1.2-event annual forecast. Reporting units, event segmentation, coverage, and local exposure all affect the count.
03 / RECORDED CONSEQUENCES
Impact fields on these rows
Damage estimates are nominal values as filed by the reporting source and retained by NOAA.
Property damage$90Knot inflation-adjusted
Crop damage$0not inflation-adjusted
First report year2,018within selected window
Latest report year2,025within selected window
04 / RECENT ROW SAMPLE
Latest records in this slice
Up to eight latest rows are shown for auditability. Open NOAA for complete narratives and revisions.
| Date | Event ID | Source | Magnitude / scale | Filed damage |
|---|---|---|---|---|
| 2025-06-06 | NOAA 1,252,490 | Department of Highways | — | $0 |
| 2023-07-29 | NOAA 1,124,064 | Fire Department/Rescue | — | $0 |
| 2023-07-16 | NOAA 1,123,750 | Fire Department/Rescue | — | $0 |
| 2023-07-16 | NOAA 1,123,744 | Fire Department/Rescue | — | $0 |
| 2023-07-08 | NOAA 1,123,650 | Public | — | $0 |
| 2023-06-28 | NOAA 1,112,605 | Law Enforcement | — | $0 |
| 2021-07-29 | NOAA 976,181 | Emergency Manager | — | $35K |
| 2021-07-29 | NOAA 976,180 | Emergency Manager | — | $20K |