1. File with zipped ASCII grids - This file contains the final, spatially interpolated, high-resolution NOAA Atlas 14 precipitation frequency estimates with confidence limits, and is the basis for the PFDS interface results.


2. Grid metadata file - This file contains information on projection, grid resolution, precipitation units, and other details relevant to data shown in ASCII grid files. The grid metadata file is in the XML format and is automatically downloaded with zipped ASCII grids. The grid metadata file can also be viewed and downloaded separately below (left-click to view, right-click/Save As to download):
        Volume 1: Semiarid Southwest (sw)
        Volume 2: Ohio River Basin and Surrounding States (orb)
        Volume 3: Puerto Rico and the U.S. Virgin Islands (pr)
        Volume 4: Hawaiian Islands (hi)
        Volume 5: Selected Pacific Islands - click to see sub regions
   
3. • Commonwealth of the Northern Mariana Islands: Rota, Saipan & Tinian (nmi)
   • Federated States of Micronesia, State of Chuuk: Lukunor & Weno (ch)
   • Federated States of Micronesia, State of Kosrae: Kosrae (ko)
   • Federated States of Micronesia, State of Pohnpei: Pohnpei (pp)
   • Federated States of Micronesia, State of Pohnpei: Nukuoro (nk)
   • Federated States of Micronesia, State of Pohnpei: Pingelap (pg)
   • Federated States of Micronesia, State of Yap: Yap Islands (yp)
   • Federated States of Micronesia, State of Yap: Woleai (wl)
   • Federated States of Micronesia, State of Yap: Ulithi (ul)
   • Republic of Palau: Angaur, Babelthuap & Koror (pl)
   • Republic of the Marshall Islands (rm)
   • Territory of American Samoa: Tutuila (as)
   • Territory of Guam (gu)
   • Wake Island (wki)
     Volume 6: California (sw)
     Volume 7: Alaska (ak)
     Volume 8: Midwestern States (mw)
     Volume 9: Southeastern States (se)
     Volume 10: Northeastern States (ne)

The files either can be downloaded 1) via pull-down menu, 2) by anonymous ftp or 3) via web browser. Ftp is recommended for multiple-file downloads. To obtain precipitation frequency estimates without downloading files, please visit the PFDS interface.

1) Via pull-down menu:

Volume:	1: Semiarid Southwest 2: Ohio River Basin and Surrounding States 3: Puerto Rico and the U.S. Virgin Islands 4: Hawaiian Islands 5: Selected Pacific Islands 6: California 7: Alaska 8: Midwestern States 9: Southeastern States 10: Northeastern States Select sub region Northern Mariana Islands: Rota, Saipan & Tinian Federated States of Micronesia, State of Chuuk: Lukunor & Weno Federated States of Micronesia, State of Kosrae: Kosrae Federated States of Micronesia, State of Pohnpei: Pohnpei Federated States of Micronesia, State of Pohnpei: Nukuoro Federated States of Micronesia, State of Pohnpei: Pingelap Federated States of Micronesia, State of Yap: Yap Islands Federated States of Micronesia, State of Yap: Woleai Federated States of Micronesia, State of Yap: Ulithi Republic of Palau: Angaur, Babelthuap & Koror Republic of the Marshall Islands Territory of American Samoa: Tutuila Territory of Guam Wake Island
Type:	Precipitation frequency estimates Upper confidence limits Lower confidence limits
Series:
Duration:	5-minute 10-minute 15-minute 30-minute 60-minute 2-hour 3-hour 6-hour 12-hour 24-hour 2-day 3-day 4-day 7-day 10-day 20-day 30-day 45-day 60-day

2) By anonymous ftp:

Action	Type this
Open ftp to the server	ftp hdsc.nws.noaa.gov
Login as anonymous user	anonymous
Give the password	"your e-mail address"
Switch to binary mode	binary
Change directory	cd pub/hdsc/data/xx/ (replace "xx" with an abbreviation, abbreviations can be found at the top of the page in parenthesis, e.g. "ak" for Alaska)
Get one file	Example: mget ak100yr24ha.zip (this will download the 100-year 24-hour data for the Volume 7: Alaska)
Get several files	Example: mget ak*yr24ha.zip (the wildcard '*' in this case will get Alaska data for all frequencies for the 24-hour duration)
Quit ftp	quit

3) Via web browser: alternatively you can peruse the ftp directory via a browser.