HSA Boundaries Change Log

05 SEP 2024

All changes planned for September 10 have been postponed.

DKR

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27 JUN 2024 

Effective 10 September 2024 (hs10se24.*)

No change due do to SCNs

ERRATA fixed with this release:

State of Hawaii shifted 0.25 miles SE

DKR

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14 FEB 2023

Effective 08 March 2023 (hs08mr23.*)

Per SCN 22-124 Change for LWX in Maryland around the Sassafras River
Per SCN 22-123 Changes for American Samoa (WSO PPG)
Per SCN 22-128, 22-129, 22-130 Due to removal of lagoons state wide, features my be slight different in AK for AJK, AFC, AFG

DKR

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13 Jan 2022

Effective 22 March 2022 (hs22mr22.*)

Per SCN 21-102 Changes made to AK CWA.

DKR

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28 SEP 2020

Effective 10 November 2020 (hs10nv20.*)

Per SCN 20-31 Cecil and Garrett counties and
corresponding zones in Maryland now fall under the LWX WFO.

DKR

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29 May 2020

The move of Cecil and Garrett county to the LWX CWA has been postponed

DKR

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Effective 03 March 2020

03 March 2020 (hs03mr20.zip)

Per SCN 19-112 Lake County in California now under EKA responsibility.

DKR
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Effective 02 June 2020

25 February 2020 (hs02jn20.zip)

Per SCN 20- Cecil and Garrett county in Maryland now fall under the LWX WFO.

DKR
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June 2019
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(hs05jn19.*)

Changed border of TWC/PSR boundary
Correspondence with WFOs

DKR - I believe there have been other changes since
JAN 2011. This log will be maintained going forward.


January 2011
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(hs07ja11.*)

In accordance with SCN # the boundary of SLC and PIH were changed to match their CWA


12 February 2009
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(hs07my09.*)

In accordance with SCN 09- the boundary of AFC/AFG was modified.

23 January 2008
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(hs22ja08.*)

Fixed boundary between VEF and LKN to match CWA boundary for N. Nye County.

26 November 2007
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(hs26nv07.*)

Minor boundary fixes, mostly in Southern Region.

30 August 20007
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(hs30au07.*)

Updates for NWS Southern Region

2 July 2007
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(hs26jn07.*)

Boundaries between SGX and VEF corrected to match CWA bounds.

22 August 2006
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(hsa20mr06.*)

Initial shapefile.