President Harrison's December 1889 message to Congress cites Signal Corps military deterioration, not the Howgate scandal or the January 1888 blizzard, as the reason for the weather-service transfer

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Benjamin Harrison's First Annual Message to Congress (December 3, 1889) is the primary document behind the already-established fact that the 1890–91 weather-service transfer happened "at the request of President Benjamin Harrison" (claim-1890-91-weather-service-transferred-to-agriculture-at-harrisons-request), which until now had been known only from a Tier 1 timeline that stated the transfer's fact and sponsor without a reason. Read directly, Harrison's own reason is narrow and bureaucratic: "I recommend that the weather service be separated from the War Department and established as a bureau in the Department of Agriculture... The report of the Chief Signal Officer shows that the work of the corps on its military side has been deteriorating." This is one sentence in a roughly 6,000-word message that elsewhere cites specific scandals and disasters by name (the Apia hurricane disaster, the Terry–Field shooting) when it means to. Neither the Howgate embezzlement scandal nor the January or March 1888 Plains and Northeast blizzards appear anywhere in it.

This is the strongest single piece of evidence bearing on question-howgate-scandal-and-1888-deaths-causal-weight-in-weather-bureau-transfer: the one document that demonstrably drove Congress's action states a different, vaguer rationale than the scandal-and-disaster narrative in claim-noaa-history-attributes-signal-services-1880s-reputation-collapse-to-multiple-factors.