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The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.

State profile · FEMA + NOAA + National Risk Index

Northern Mariana Islands Natural Disasters

Northern Mariana Islands has one of the lighter federal disaster records in the country. 29 FEMA disaster declarations are on record, led by typhoon, with $0 in combined property and crop damage. A light count doesn't mean zero risk, just fewer events that crossed the federal declaration threshold.

29
FEMA declarations
0
NOAA storm events
0
Storm fatalities
$0
Property + crop damage

The Northern Mariana Islands risk picture

0 of Northern Mariana Islands's 3 municipalities, 0%, carry a FEMA "high-risk" National Risk Index rating, with tsunami the single largest driver of expected annual loss statewide. Northern Mariana Islands has 20 Major Disaster (DR) declarations; FEMA authorizes Individual Assistance, Public Assistance, or both separately for each declaration. NOAA-tracked storms have caused 0 injuries statewide.

0%
of municipalities rated high-risk by FEMA National Risk Index
29
FEMA disaster declarations on record
$0
in tracked property + crop damage

FEMA's National Risk Index and NOAA's Storm Events Database measure different things: modeled long-run risk vs. observed severe-weather events. Storm Events is a reported dataset, so its counts track what was observed and logged, not every event that occurred, and reporting is denser where more people live. See the methodology for how they relate.

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FEMA declarations

29

Low volume

Major Disaster share

69%

Major-heavy

NOAA storm events

0

Observed severe-weather records

How does Northern Mariana Islands compare?

Northern Mariana Islands vs. every U.S. state

FEMA disaster declarations, all-time

29 12th percentile higher than 12% of 59 states and territories

This state 0 400 all U.S. states and territories FEMA tracks, bucketed by value

Each bar is a band; taller bars hold more states and territories. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FEMA Disaster Declarations Summaries v2 · 2026-08-03

Do more storms mean more federal disasters?

Illinois records far more NOAA storm events than its FEMA declaration rank suggests, while Nevada climbs the declaration ledger with Fire Management Assistance at 75.5% of its declarations. Storm counts and federal declarations answer different questions.

FEMA declaration rank vs NOAA storm-event rank

Each point is a state or territory plotted by within-sample rank percentile (0–100) on FEMA OpenFEMA declarations (x) and NOAA Storm Events (y). Crosshairs mark the mid-rank (50th). Illinois is the clearest threshold-gap example in this release. Source: FEMA OpenFEMA Disaster Declarations Summaries v2 + NOAA Storm Events Database. 2×2 strategic matrix plotting 30 entities by FEMA declarations (percentile) (X) and NOAA storm events (percentile) (Y), with a crosshair dividing the plot into four quadrants. Busy on both ledgersMany storms · fewer declarationsDeclaration-heavy · fewer stormsQuiet on both 406080100120 020406080100120 FEMA declarations (percentile) NOAA storm events (percentile) Signature insight
Each point is a state or territory plotted by within-sample rank percentile (0–100) on FEMA OpenFEMA declarations (x) and NOAA Storm Events (y). Crosshairs mark the mid-rank (50th). Illinois is the clearest threshold-gap example in this release. Source: FEMA OpenFEMA Disaster Declarations Summaries v2 + NOAA Storm Events Database.
Read the chart, every state as text

Percentiles are within this release's state/territory sample. Raw counts are the underlying FEMA and NOAA totals.

StateFEMA declsFEMA %ileNOAA stormsNOAA %ile
California3969823,69493
Texas3899653,30998
Oklahoma2589523,89695
Washington215934,40822
Florida1889112,83855
Oregon169893,69520
New Mexico1268710,97445
Arizona120859,54138
New York1188421,65382
Montana1128213,57656
Colorado1117818,34073
Louisiana1117811,20447
Nevada110764,53424
Alabama1027514,58364
Kentucky987119,94778
Mississippi987114,10062
Tennessee976916,64569
South Dakota966722,75987
Alaska94642,68315
Kansas946425,11596
Arkansas876013,63758
Nebraska876020,13680
Missouri865822,95289
North Carolina855616,36767
West Virginia845512,02649
Georgia815116,67671
Minnesota815119,10975
Iowa784921,88384
Virginia774723,58491
North Dakota754510,81844
Hawaii72446,20031
Maine71424,78127
Illinois684022,08885
Pennsylvania643819,42776
New Hampshire63362,54711
Vermont62353,44918
Idaho60315,14229
Ohio603116,18465
Massachusetts59256,78133
New Jersey59258,21835
Utah59254,57825
Wisconsin562413,80760
Indiana542212,68753
Puerto Rico51182,94416
South Carolina511810,52042
Michigan46169,05236
Wyoming451512,49451
Connecticut43132,62213
Maryland381110,29040
U.S. Virgin Islands339880
Rhode Island3179247
Delaware2651,4759
Guam2542582
District of Columbia2424525
American Samoa1702924

What shapes Northern Mariana Islands's record?

FEMA declaration types in Northern Mariana Islands

Wider bars = more declarations of that incident type

declarations

What this shows Typhoon leads Northern Mariana Islands's FEMA declaration mix with 20 records among the types shown.

Source FEMA OpenFEMA Disaster Declarations Summaries v2 As of 2026-08-03
18 /100

Historical Activity Index

Low historical activity

Northern Mariana Islands · PlainHazard-derived composite from federal records

This 0–100 index is an explicit PlainHazard composite mixing OpenFEMA declaration totals (1953–present) with NOAA Storm Events (2015–2025), different windows and event definitions, disclosed weights on the methodology page . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology

FEMA Declarations (1953–present) Low
5/30

29 OpenFEMA declarations, full ingest window (0.3x state average)

NOAA Storm Events (2015–2025) Low
0/25

0 NOAA storm events in the 2015–2025 extract (0.0x median state)

NOAA Damage (2015–2025) Low
0/25

Recorded NOAA property+crop damage in the 2015–2025 extract (0.0x median state)

Hazard Diversity High
13/20

5 different disaster types declared in Northern Mariana Islands

What does Northern Mariana Islands's hazard record show?

FEMA disaster declarations

Northern Mariana Islands (MP) has a low level of federal declaration activity, with 29 FEMA declaration records, including 20 Major Disaster declarations (DR). A DR may authorize Individual Assistance, Public Assistance, or both; those program approvals are not implied by the DR count. The dominant declaration type is Typhoon, followed by Tropical Storm (5), Biological (2), Hurricane (1). Declaration counts at the state level reflect the cumulative federal footprint: large multi-county events count once per state, but repeat hazard patterns across decades are visible in the breakdown below.

Flood exposure & where to dig deeper

NFIP claims data is limited or absent for this state in the current extract, which usually indicates low flood-policy penetration rather than zero flood risk. The highest-Expected-Annual-Loss hazard across the state is Tsunami, estimated at $0.0B annually. Drill into individual municipalities for localized risk, read FEMA's hazard-specific briefings, and review insurance and flood-zone designations, state-level averages can mask sharp county-to-county differences in exposure and resilience.

NOAA storm events & FEMA National Risk Index

NOAA's Storm Events Database adds the near-term severe-weather lens. Between 2015 and 2025, Northern Mariana Islands recorded 0 individual storm events, causing 0 fatalities and 0 injuries, with combined property and crop damage estimated at $0. Across the state's 3 analyzed municipalities, FEMA's own National Risk Index flags 0 as high-risk, with an average county Risk Index score (FEMA's own formula, distinct from our Historical Activity tool below) of 0.0/100.

What this count is, and is not. Storm Events is a reported database: NOAA compiles it from National Weather Service offices, trained spotters, law enforcement, and the public. It is a record of what was observed and logged, not a complete census of severe weather. Densely populated areas report more events than sparsely populated ones with similar meteorological exposure, and detection has improved over time, so an event count is not a like-for-like measure of hazard between places or across decades. Damage figures are field estimates, not audited losses. See methodology.

Disaster Types in Northern Mariana Islands

Typhoon 20
Tropical Storm 5
Biological 2
Hurricane 1
Flood 1

FEMA Disaster Declarations

How the 29 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download all 29 declarations as CSV . Source data is public domain; our derived presentation is CC0.

29 unique disaster declarations in Northern Mariana Islands.

DR# Title Type Incident Date
3647 TYPHOON BAVI EM Tropical Storm 2026-07-03
4910 SUPER TYPHOON SINLAKU DR Hurricane 2026-04-23
3645 TYPHOON SINLAKU EM Tropical Storm 2026-04-11
3602 TROPICAL STORM BOLAVEN EM Tropical Storm 2023-10-08
4716 TYPHOON MAWAR DR Tropical Storm 2023-06-02
3593 TYPHOON MAWAR EM Tropical Storm 2023-05-22
4511 COVID-19 PANDEMIC DR Biological 2020-04-01
3463 COVID-19 EM Biological 2020-03-13
3425 TYPHOON BUALOI EM Typhoon 2019-10-20
3424 TYPHOON HAGIBIS EM Typhoon 2019-10-07
4404 SUPER TYPHOON YUTU DR Typhoon 2018-10-26
3408 TYPHOON YUTU EM Typhoon 2018-10-23
4396 TYPHOON MANGKHUT DR Typhoon 2018-09-29
3402 TYPHOON MANGKHUT EM Typhoon 2018-09-10
4235 TYPHOON SOUDELOR DR Typhoon 2015-08-05
1611 TYPHOON NABI DR Typhoon 2005-11-08
1541 FLOODING, HIGH SURF, STORM SURGE, AND HIGH WINDS AS A RESULT OF SUPER TYPHOON CH DR Typhoon 2004-08-26
1532 FLOODING, HIGH SURF, HIGH WINDS, AND WIND-DRIVEN RAIN ASSOCIATED W TYPH TINGTING DR Typhoon 2004-07-29
1447 SUPER TYPHOON PONGSONA DR Typhoon 2002-12-11
1430 TYPHOON CHATA'AN DR Typhoon 2002-08-06
1194 SUPER TYPHOON PAKA DR Typhoon 1997-12-24
1192 SUPER TYPHOON KEITH DR Typhoon 1997-12-08
854 TYPHOON KORYN DR Typhoon 1990-02-05
811 TYPHOON ROY DR Typhoon 1988-01-20
800 TYPHOON LYNN DR Typhoon 1987-11-03
783 TYPHOON KIM DR Typhoon 1986-12-10
634 TYPHOON DINAH DR Typhoon 1980-11-27
562 TROPICAL STORM CARMEN DR Flood 1978-08-18
508 TYPHOONS PAMELA & THERESE DR Typhoon 1976-06-17

FEMA National Risk Index

Composite natural hazard risk scores for Northern Mariana Islands municipalities based on FEMA's National Risk Index.

Avg County Risk Score

0.0/100

High Risk Municipalities

0

of 3 municipalities

Top Hazard by EAL

Tsunami

$0.0B annual loss est.

Top 5 Hazards by Expected Annual Loss

#1

Tsunami

$33.1M EAL

#2

Hurricane

$23.9M EAL

#3

Earthquake

$3.6M EAL

#4

Coastal Flooding

$52.8K EAL

#5

Riverine Flooding

$9.9K EAL

Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) EAL = Expected Annual Loss. Data: hazards.fema.gov/nri

Municipalities in Northern Mariana Islands

5 municipalities with FEMA disaster data.

# Municipality DisastersMajor
1 Rota Municipality 25 16
2 Saipan Municipality 22 13
3 Tinian Municipality 22 13
4 Northern Islands Municipality 16 8
5 Northern Mariana Islands 6 2

All 5 municipalities in Northern Mariana Islands are listed above.

Disaster Preparedness Guides

Learn more about natural disaster risk, preparedness, and data interpretation.

Frequently Asked Questions

What natural disasters affect Northern Mariana Islands?
Northern Mariana Islands is affected by typhoon, tropical storm, biological, hurricane. The state's leading disaster type is Typhoon, based on 29 FEMA disaster declarations on record.
How many FEMA disaster declarations has Northern Mariana Islands had?
Northern Mariana Islands has received 29 FEMA disaster declarations, including 20 major disaster declarations. These declarations span multiple disaster types including Typhoon (20), Tropical Storm (5), Biological (2).
How active is Northern Mariana Islands's federal disaster declaration record?
Northern Mariana Islands has a low level of historical federal declaration activity, based on 29 FEMA declaration records. This band is not a future-risk forecast. Combined NOAA-listed property and crop losses total $0.
Which municipalities in Northern Mariana Islands have the most disaster declarations?
Among 5 municipalities in Northern Mariana Islands, those with the most FEMA declaration records include Rota (25 declarations), Saipan (22 declarations), Tinian (22 declarations). Breaking the declarations down by county reveals patterns a statewide total can mask.

Source: FEMA OpenFEMA Disaster Declarations, NOAA Storm Events Database (2015-2025) FEMA OpenFEMA Disaster Declarations, NOAA Storm Events Database (2015-2025) For informational purposes only

What this means for Northern Mariana Islands

Rota alone accounts for 86% of Northern Mariana Islands's FEMA disaster declarations, out of 5 counties tracked statewide.

  • The declaration record is uneven within the state: Rota and Saipan carry the most FEMA declarations. Browse counties
  • See how Northern Mariana Islands ranks against other states for disaster frequency and damage. State rankings
  • Learn what FEMA declarations, NRI risk scores, and damage figures do and don't tell you. Disaster-data guide

Historical declaration counts and damage totals describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.

Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial

Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.