Storm Risk in Semaphore Park, SA: 2026 Assessment

Semaphore Park, South Australia· UNKNOWN
Moderate storm risk — occasional severe thunderstormsUpdated 3 Apr 2026

Storm Risk Score

2.4/10

Moderate storm risk — occasional severe thunderstorms

Key Facts

Storm Risk
Moderate storm risk — occasional severe thunderstorms
Trend
stable
Suburb
Semaphore Park, SA
Overall Risk
Medium
Postcode
5019
Highest high-risk exposure
11.1% of land (surface flood)

Storm Risk Analysis

Semaphore Park, South Australia, has a moderate storm risk profile. This includes exposure to severe thunderstorms, hail, damaging winds, and — in tropical regions — cyclone impacts. The applicable wind region classification under AS/NZS 1170.2 influences building design standards for Semaphore Park.

Severe thunderstorms affecting Semaphore Park can produce damaging wind gusts, large hail, and intense rainfall. The Bureau of Meteorology issues severe weather warnings for South Australia, and historical storm data helps characterise the frequency and intensity of events in the region.

CSIRO research indicates that the intensity of severe convective storms — including those producing hail and damaging winds — may increase in a warming climate. For Semaphore Park property owners, this reinforces the value of storm-resistant building features and comprehensive insurance.

ClimateNest provides address-level storm risk reports for Semaphore Park including wind zone classification, hail risk probability, and property-specific mitigation recommendations based on your building characteristics.

Semaphore Park sits within ClimateNest's suburb-level hazard model for severe storm risk. 0% of the suburb's land area is mapped in high-risk severe storm zones and 85.9% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Semaphore Park.

Semaphore Park (postcode 5019) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are surface flood (11.1% of land in high-risk zones), bushfire (10.8% of land in high-risk zones), extreme wind (4.2% of land in high-risk zones). Exposure is not uniform across Semaphore Park — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.

Local Hazard Evidence

Wind/Storm RegionModerate exposure to sea level rise
Storm Risk LevelModerate erosion risk
Distance to Coast0.5 km

Historical Events

2016
Moderate

Severe storms caused flash flooding and power outages in Semaphore Park and surrounding areas.

Adaptation & Mitigation Actions

Upgrade stormwater drainage infrastructure

Near-term

Improve the capacity and efficiency of stormwater drainage systems to reduce the risk of flooding during heavy rainfall events.

Est. cost: Medium

Construct coastal defenses

Long-term

Build seawalls, breakwaters, and other coastal defenses to protect against sea level rise and coastal erosion.

Est. cost: High

Implement a heatwave early warning system

Immediate

Develop and implement a heatwave early warning system to alert residents of impending heatwaves and provide guidance on how to stay safe.

Est. cost: Low

Promote water conservation

Near-term

Encourage residents to conserve water through education and incentives to reduce demand on water resources during droughts.

Est. cost: Low

Council & Emergency Services

City of Port Adelaide Enfield
Emergency Services

Data last updated: 3 April 2026

Explore Semaphore Park Risk Reports

Frequently Asked Questions

Is Semaphore Park prone to hailstorms?

Hail risk in Semaphore Park depends on the frequency of severe thunderstorm activity in the South Australia region. BOM tracks severe storm events including hail. Property-specific risk depends on roof design, building orientation, and local storm patterns.

What wind rating applies to buildings in Semaphore Park?

Under AS/NZS 1170.2, properties in Semaphore Park are assigned a wind region classification. This rating determines structural design requirements for new buildings. Check with ClimateNest or a structural engineer for your property's classification.

Does storm risk affect insurance premiums in Semaphore Park?

Yes, storm damage — including wind, hail, and rain ingress — is one of the most common insurance claims in Australia. Properties in higher wind zones or with greater hail exposure may face higher premiums or specific policy conditions.

What storm mitigation measures should Semaphore Park property owners consider?

Storm mitigation includes impact-resistant roofing, cyclone-rated fixings where required, window and door shutters, regular roof and gutter maintenance, securing outdoor items, and ensuring compliance with current wind load standards under the National Construction Code.

What share of Semaphore Park is exposed to high surface flood risk?

ClimateNest's hazard overlay maps 11.1% of Semaphore Park in high-risk zones for surface flood, with a further 74.3% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.

Is Semaphore Park Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Semaphore Park, South Australia, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$69 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections