Utah's outage planning spans dense Wasatch Front continuity and longer-duration mountain or flood events that call for a separate 48-hour support model.
Salt Lake County alone accounts for 14,776 electricity-dependent Medicare beneficiaries, while Utah and Washington counties also clear the public BPI threshold, which means Utah combines metro continuity and mountain outages rather than behaving like a winter-weather-only state.
Mixed Wasatch Front, Flood, and Mountain Outage Risk
A winter-only description is too narrow for Utah's actual outage mix. NOAA's statewide event record is led by thunderstorm wind, winter storm, flash flood, high wind, and heavy snow, which means the practical household case is broader than a cold-weather-only assumption.
The Wasatch Front carries the densest continuity burden. Salt Lake, Utah, and Washington are the top public BPI counties, while HHS emPOWER counts 46,725 electricity-dependent Medicare beneficiaries statewide with Salt Lake (14,776), Utah (6,138), Davis (4,667), Weber (4,528), and Washington (2,928) as the largest county totals. That supports a metro-first baseline rather than a sparse-mountain default.
Fire declarations still dominate Utah's federal record over the decade, but the most recent non-fire declaration is a better fit for Utah households statewide. DR-4752 covers flooding in 2023 and better matches the Wasatch Front plus mountain-duration outage mix than a fire-only label would.
FEMA DR-4752 — flooding across Utah in spring 2023; a statewide event that reflects Utah's actual mix of Wasatch Front and mountain outages.
Source: FEMA DR-4752Evidence trail
These notes trace the editorial claims above back to FEMA, DOE, utility, or other cited records.
FEMA declaration count (21) from OpenFEMA API, deduplicated by disaster number, DR/EM/FM types, 2014-2023; Utah's mix in this window includes Fire (15), Flood (2), Biological (2), Earthquake (1), and Severe Storm (1).
NRI composite score (84.9) from FEMA NRI county layer, population-weighted to state level; top modeled hazards are Wildfire, Earthquake, and Lightning.
NOAA outage-relevant event mix is led by Thunderstorm Wind (1,665), Winter Storm (1,039), Flash Flood (990), High Wind (899), and Heavy Snow (862), with Tooele, Salt Lake, Washington, Grand, and Box Elder leading county counts.
HHS emPOWER counts 46,725 electricity-dependent Medicare beneficiaries statewide; Salt Lake (14,776), Utah (6,138), Davis (4,667), Weber (4,528), and Washington (2,928) are the largest county totals. Salt Lake, Utah, and Washington are the top BPI counties in the GeneratorChecker cross-signal layer.
Utah Flooding DR-4752 from FEMA disaster declaration records.
Structured FEMA NRI, HHS emPOWER, NOAA Storm Events, and EIA methodology is documented separately on the methodology page.
NRI's top modeled hazards are Wildfire, Earthquake, and Lightning, while NOAA's outage-relevant record is led by Thunderstorm Wind, Winter Storm, Flash Flood, High Wind, and Heavy Snow events..
NOAA storm-event records filtered to outage-relevant event types for Utah. Counts reflect historical storm-event assignments, not confirmed utility outages.
Analysis window
2005-01 to 2024-12
Included storm-event records
5,681
Source as of
2026-03
Included exact NOAA event types for Utah: Thunderstorm Wind, Tornado, High Wind, Strong Wind, Flash Flood, Flood, Winter Storm, Ice Storm, Freezing Rain, Heavy Snow, Blizzard.
In this filtered NOAA record set for Utah, Jul has the highest monthly count (807 records) , and Thunderstorm Wind is the leading event type. This chart shows frequency in NOAA records, not how severe a specific outage may be.
775 events were not mapped to a county ranking.
668 events were not mapped to a county ranking.
499 events were not mapped to a county ranking.
14 events were not mapped to a county ranking.
91.6% of listed records were matched directly to this county.
61.0% of listed records were matched directly to this county.
79.9% of listed records were matched directly to this county.
34.7% of listed records were matched directly to this county.
67.5% of listed records were matched directly to this county.
52.2% of listed records were matched directly to this county.
Forecast-zone events in Utah are assigned to counties using the current NWS county crosswalk. Some forecast zones expand to multiple counties; unresolved legacy, coastal, and sub-county forecast zones fall into the excluded bucket.
Direct county match
49.5%
Mapped from forecast zone
15.7%
Not assigned to county ranking
34.9%
Unresolved forecast zones
23
County-level HHS emPOWER counts for electricity-dependent Medicare beneficiaries in Utah.
46,725 Medicare beneficiaries in Utah have claims associated with electricity-dependent medical equipment. (HHS emPOWER, 2026-03)
County-level HHS emPOWER records for this state. Medicare enrollment data only. 29 counties are included in this state snapshot.
Counties with higher concentrations may face elevated community-level demand for backup power during outages. This does not indicate individual medical necessity.
Limitations: Reflects Medicare beneficiaries with claims associated with electricity-dependent medical equipment. Does not capture non-Medicare or uninsured populations. HHS masks cells from 1 to 10 as 11.
The GeneratorChecker Backup Priority Index is a county shortlist for backup planning, combining historically frequent outage-relevant storm activity with larger county counts of electricity-dependent Medicare beneficiaries. It is planning context, not a forecast or an outage guarantee.
BPI version
v1.0
Analysis window
2005-01 to 2024-12
Matched counties
29
Counties qualify for the public BPI only when both signals land at or above the 80th percentile within the state. The shortlist excludes low-base medical counties and counties with less than 30% direct NOAA county matching.
Qualifying counties shown on the page: 3.
Percentiles are computed within Utah only and are not comparable across states.
1. SALT LAKE
County FIPS 49035
At-risk Medicare count
14,776
Storm-event records
364
Direct NOAA county match
61.0%
2. UTAH
County FIPS 49049
At-risk Medicare count
6,138
Storm-event records
247
Direct NOAA county match
52.2%
3. WASHINGTON
County FIPS 49053
At-risk Medicare count
2,928
Storm-event records
359
Direct NOAA county match
79.9%
Use a 24-hour Wasatch Front continuity bundle first, then extend to 48 hours with heating-system support if the household sits in a colder or more outage-prone mountain area.
Primary Utah metro scenario: storm, flood, or localized outage across the Wasatch Front while refrigeration, communications, medical support, and work continuity remain the key loads.
Load
698W
Target
24h
Minimum
27,600 Wh
This is the metro baseline for Salt Lake and Utah counties. It is intentionally broader than a winter-only bundle.
Size this scenario in calculatorExtended Utah scenario: colder mountain or flood-affected outage where food preservation, communications, medical support, and a gas-heating blower all need to stay online.
Load
1396W
Target
48h
Minimum
110,100 Wh
This scenario adds heating-system support and does not model electric resistance heating.
Size this scenario in calculatorCritical Note: No single portable power station in our database covers the full 24-hour baseline at this load (27,600 Wh target vs. 6,144 Wh max in our current database). Use solar recharge, load rotation, or expandable systems for longer events.
Treating Utah as a winter-only state when thunderstorm wind and flash flood sit near the top of the NOAA record.
Ignoring Salt Lake and Utah counties because fire declarations are more visible than metro continuity data.
Using electric-resistance-heating assumptions instead of a gas-heating blower for the extended scenario.
For home backup, you need surge capacity for fridge compressors and enough Wh for multi-day outages. Here are the best options from our database of 33 stations.
From CPAP to oxygen concentrators, here is a practical checklist for keeping medical equipment running during power outages. Includes sizing math and emergency contacts.
A 1,500W space heater drains a power station in 1-2 hours. Here's the honest math on battery-powered heating, plus smarter alternatives that actually work.
Composite score: 84.9 / 100
Rating: Relatively High
Top modeled hazards: Wildfire, Earthquake, Lightning
Hurricane score: 0.0
Winter Weather score: 89.5
Wildfire score: 95.3
Total (2014-2023): 21
Most recent: 2023-12-23 Flood
| Type | Count |
|---|---|
| Fire | 15 |
| Biological | 2 |
| Flood | 2 |
| Earthquake | 1 |
| Severe Storm | 1 |
Required Wh = (Total Load W × Target Hours / Inverter Derate) × Safety Factor
Inverter derate: 0.70 (30% real-world loss)
Safety factor: 1.15
Rounding: Up to nearest 100 Wh
Utah has an NRI composite risk score of 84.9 (Relatively High), with 21 federal declarations from 2014 to 2023. NRI's top modeled hazards are Wildfire, Earthquake, and Lightning, while NOAA's outage-relevant record is led by Thunderstorm Wind, Winter Storm, Flash Flood, High Wind, and Heavy Snow events..
For the primary scenario on this page (24-hour Wasatch continuity), the estimated minimum is 27,600 Wh for a 24-hour target. Refine this in the calculator with your actual devices.
NRI is a modeled risk index based on hazard exposure, vulnerability, and expected loss. FEMA declarations reflect federally declared incidents. They answer different questions — use both signals together for planning.
Buying for a generic winter outage when the more common Utah case is a mixed storm, flood, or wind event in the Wasatch corridor. See the common mistakes section above for more state-specific pitfalls.
