Allstate's $925M March Cat Bill Signals a Severe Convective Q1 Across the P&C Industry

The total is close to Q1 2025's, but it was assembled differently. Last year one wildfire complex carried it. This year 15 separate wind and hail events did, and that shape is what reaches a rate filing.

Key Takeaways

• $925 million for March is Allstate's second-largest single-month catastrophe figure in any first quarter since monthly disclosures began, and it is already net of reinsurance recoveries.
• 15 events is the highest first-quarter count in the five-year window, against 9 in Q1 2022 and 8 in Q1 2025, so frequency rather than severity produced the total.
• Q1 2026 carries no wildfire contribution, unlike Q1 2025 when the January Los Angeles fires drove the figure on their own.
• ISO loss costs reflecting the record 2023 severe convective storm year are only reaching bound policies in Q2 and Q3 of 2026, three years after the events, and state approval adds another 6 to 18 months.
• Hail claims run 60% to 70% paid by the end of the claim year, and assignment-of-benefits litigation can extend the tail 12 to 24 months, so Q1 2026 ultimates will not stabilize until 2027.

A Frequency Quarter, Not a Severity Quarter

The March figure covers hail and wind losses concentrated in the central and southern United States, the footprint that drove the 2023 and 2024 severe convective storm records. Allstate's homeowners and auto book carries meaningful share across Texas, Oklahoma, Kansas, Nebraska, Missouri, Illinois, Arkansas, Tennessee and Alabama, which is why its monthly releases function as one of the closest public proxies for industry SCS exposure.

Two qualifications sit under the headline. The $925 million is net of reinsurance recoveries, so gross losses through the cedent's book were materially larger and the pressure on the aggregate cover is larger than the net figure shows. And Q1 is structurally Allstate's lightest quarter, historically running between $200 million and $600 million.

The event count is the distinguishing feature. 15 events is the highest first quarter in the window, against 9 in 2022 and 8 in 2025. Q1 2025 reached roughly $1.1 billion largely through the January California wildfires; Q1 2026 reached $1.24 billion with no wildfire contribution at all, before the April to June peak SCS season and well before the Atlantic hurricane season.

The Rate Being Charged Reflects Losses From Three Years Ago

ISO loss costs remain the benchmark for homeowners rate adequacy in most states, and they arrive on a fixed lag. Data from year Y flows into a loss cost filing in late Y+1 or Y+2, which supports carrier rate filings in Y+2 or Y+3, which take effect in Y+3 or Y+4.

Follow the 2023 SCS record through that chain. Full-year 2023 data feeds a loss cost filing in late 2024 or early 2025, which supports carrier rate filings in mid-2025 for mid-2026 effective dates. The first policies priced on loss costs that reflect the 2023 regime are therefore binding during Q2 and Q3 of 2026, three years after the events that defined it. State approval adds 6 to 18 more months depending on jurisdiction, and 2024 and 2025 SCS losses kept running above the pre-regime baseline in the meantime.

For an SCS-heavy state that gap is worth another 5 to 10 percent of rate beyond the filed ISO indication. A homeowners indication built straight to ISO trend without a supplemental frequency loading is not conservative; it is priced to a loss cost that the last four years have already superseded. Cadence matters here as much as level: an indication that is correct on severity and stale on frequency understates the number of events per exposure year, which is precisely what Q1 2026 has just added evidence on.

The peer prints in the following two weeks will show whether the frequency is Allstate's footprint or the industry's. Travelers reports April 22 with heavy Texas, Ohio and Midwest homeowners and small commercial concentration overlapping Allstate's; a figure in the $700 million to $1 billion range would read as an industry pattern, while a number below $500 million would point at portfolio concentration. Cincinnati Financial follows on April 24 with Midwest property exposure and The Hartford on April 27, weighted to small commercial and Northeast homeowners.

Fifteen Small Events Is the Hardest Shape to Reserve

The same frequency profile that makes the quarter significant makes it difficult to book. Per-event claim volumes are individually modest and cumulatively material, so no single event carries enough credibility to set its own development assumption, and the aggregate has to be built from triangles rather than from current-quarter experience.

The claim lifecycle stretches that further. Hail reporting lags average 30 to 60 days, because damage is often found at a routine roof inspection or after a later rain event. Assignment-of-benefits activity in Texas and Oklahoma pushes contractor-driven claims out further still. Wind and hail claims typically run 60% to 70% paid by the end of the claim year, with the remainder in subrogation, reinspection and litigation, and AOB litigation can extend the pattern 12 to 24 months. The Q1 2026 ultimate will not settle until 2027.

Severity assumptions face the same staleness problem as the rate. Roofing labor costs across the central and southern United States have risen 15% to 25% since 2022, and shingle, underlayment and flashing costs remain elevated relative to pre-2022 levels even as general consumer inflation has eased. A severity trend fitted on historical averages understates the current claim cost, which means initial reserves on a frequency quarter are more likely to develop adversely than favorably.

Reinsurance carries the mirror image of the problem into the June 1 Florida renewal. Events individually below the treaty attachment point do not erode per-occurrence layer capacity, so a quarter like this lands almost entirely in the cedent's net retention while still providing reinsurers with evidence on frequency volatility. Cedents holding aggregate covers face the opposite: $1 billion-plus of Q1 losses consumes a real share of the annual aggregate deductible and shifts more of the remaining year onto reinsurers. Against January renewals that delivered risk-adjusted decreases of 10 to 20 percent for well-performing programs, the mid-year outcome will therefore split by cover structure rather than by market direction.

Further Reading

• 2026's Full-Year SCS Run Rate Tops $35 Billion After the August Derecho – How Allstate's Q1 accumulation pattern played out across the rest of the industry through the year's later outbreaks.
• The P&C Market Cycle in 2026 – The broader market context for why property reinsurance is softening overall even as SCS-exposed programs face different dynamics.
• Verisk Synergy Studio Rewrites the Cat Modeling Playbook – How cloud-native cat platforms are changing SCS modeling and secondary peril calibration for pricing actuaries.
• Reinsurance Market 2026 – 1/1 renewal dynamics, rate-on-line trends, and the capacity environment that will shape mid-year treaty negotiations.
• Climate Risk and Catastrophe Modeling 2026 – Secondary peril integration, climate-adjusted pricing, and the convergence of SCS with wildfire and flood in cat model vendor roadmaps.
• Cat Bond Market Hits $63.9B as Pension Funds Scale Up – The ILS capital layer that absorbs a growing share of SCS and hurricane risk above the traditional reinsurance tower.
• How SCS Surpassed Tropical Cyclones as the Top Insured Peril – Cumulative loss data, Q1 2026 reinforcement, cat model calibration gaps, and the four CAS ratemaking approaches for convective storm pricing.
• Allstate Q1 2026 Full Earnings: Anatomy of the 15-Point Combined Ratio Swing – The complete Q1 2026 decomposition showing how $1.24B in cat losses, $838M in reserve releases, and earned premium growth produced an 82.0 property-liability combined ratio.

Sources

• Allstate Newsroom: Monthly Catastrophe Loss Disclosures
• Allstate Investor Relations: Quarterly Results and Monthly Disclosures
• S&P Global Market Intelligence: P&C Insurance Industry Tracking
• Aon Impact Forecasting: Catastrophe Insight and Climate Risk
• Verisk PCS: Catastrophe Event Bulletins
• Munich Re NatCatSERVICE: Global Catastrophe Database
• NOAA Storm Prediction Center: Severe Weather Climatology
• Swiss Re Institute: sigma Natural Catastrophes Research
• Insurance Information Institute: Severe Convective Storm Losses
• Travelers Investor Relations: Q1 2026 Earnings Release Schedule
• Progressive Investor Relations: Monthly Operating Results
• Cincinnati Financial Investor Relations
• The Hartford Investor Relations