NOAA Form 17-4A Interim Activity Reports and Final Report

U.S. DEPARTMENT OF COMMERCE
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

NOAA FORM 17‐4A
(4‐81) 

Form Approved  OMB Control No. 0648‐0025
Expires 05/31/2021

INTERIM ACTIVITY REPORTS AND FINAL REPORT
NOAA FILE NUMBER
This report is required by Public Law 92‐205; 85 Stat. 735; 145 U.S.C. 330b.  Knowing and willful violation of any 
rule adopted under the authority of Section 2 of Public Law 92‐205 shall subject the person violating such rule to 
a fine of not more than $10,000, upon conviction thereof.
Complete in accordance with instructions on reverse and forward one copy to:
National Oceanic and Atmospheric Administration
Office of Oceanic and Atmospheric Research
1315 East‐West Highway, SSMC‐3, Rm. 11216
Silver Spring, MD 20910
(b)
(a)

MONTH

NUMBER OF 
MODIFICATION 
DAYS

NUMBER OF MODIFICATION DAYS PER MAJOR 
PURPOSE
INCREASE 
PRECIPITATION

ALLEVIATE
HAIL

OTHER

INTERIM
 REPORT
REPORTING PERIOD
FROM

TO

(c)

(d)

HOURS OF APPARATUS 
OPERATION BY TYPE

TYPE AND AMOUNT OF AGENT USED

AIRBORNE

GROUND

FOG

SILVER 
IODIDE

CARBON 
DIOXIDE

JANUARY
FEBRUARY
MARCH
APRIL
MAY
JUNE
JULY
AUGUST
SEPTEMBER
OCTOBER
NOVEMBER
DECEMBER
TOTAL
TOTALS FOR 
FINAL REPORT
DATE ON WHICH FINAL WEATHER MODIFICATION ACTIVITY OCCURRED (For Final Report only.)
CERTIFICATION:  I certify that all statements in this report on this weather modification project 
are complete and correct to the best of my knowledge and are made in good faith.

NAME OF REPORTING PERSON

AFFILIATION

SIGNATURE

STREET ADDRESS

OFFICIAL TITLE

CITY

STATE

ZIP CODE

FINAL 
REPORT

DATE

UREA

SODIUM 
CHLORIDE

OTHER

INSTRUCTIONS FOR INTERIM AND FINAL REPORTS
Any person engaged in any weather modification project or activity in the United States on January 1 in
any year shall submit one copy of this form setting forth as of such date the information required with
respect to each such continuing project or activity not previously furnished in a prior interim report. The
box indicating “Interim Report” should be checked. The January 1 date shall not apply if other
arrangements have previously been made with the written approval of the Administrator of NOAA. The
report shall be received by NOAA not later than 45 days following the end of the reported period.
Upon completion of a project or activity, one copy of this report shall be submitted and the box checked
indicating “Final Report.” The final report shall be received by NOAA not later than 45 days after the
completion of the project or activity.
The NOAA File Number should be filled in for any project for which the Administrator has assigned a file
number.
A supplemental report in letter form referring to the appropriate NOAA file number must be made to
the Administrator if the “Interim” or “Final” reports are found to contain any material inaccuracies,
misstatements, and omissions.

INTERIM REPORT
The information in Items (a) through (d) on the report form should be provided as prescribed below for
the months to which the report pertains. If no data are applicable for any given item in any month,
enter zero.
Item (a)

Enter the number of days on which actual weather modification activities took place.

Item (b)

Enter in the appropriate column the number of days on which modification activities
were conducted, segregated by each of the major purposes of the activities. Normally,
the total of entries in (b) would equal the total in (a).

Item (c)

Enter in the appropriate column the total number of hours of operation of each type of
weather modification apparatus (i.e., net hours of agent release). If the form does not
contain sufficient space, report additional types on a separate sheet.

Item (d)

Enter in the appropriate column the total amount of agent used, by type. If the form
does not contain sufficient space, report additional types on a separate sheet. Silver
Iodide (grams), Carbon Dioxide (pounds), Urea (gallons), Sodium Chloride (grams),
Other (indicated on a separate sheet the type and unit of measure.)

The totals for these items shall be provided for the period covered by the interim report.

FINAL REPORT
The final report shall contain the information required for interim reports, to the extent not previously
report. In addition, the items designated as “Totals for Final Report” should be report. This information
should pertain to the entire project or activity period, rather than only the period since the last interim
report. At the space at the end of the form, enter the date on which final weather modification activity
occurred.

INFORMATION PROVIDED UNDER THE PROVISIONS
OF THE
PAPERWORK REDUCTION ACT OF 1995
The Paperwork Reduction Act o f1995 requires that individuals or organizations be provided with the
following information if they provide information on paper forms which are collected by the Federal
Government.
1. Public Law 92-205, enacted December 18, 1971 (amended by Public Law 94-490, Section 6(b),
October 15, 1976) requires that all non-federal weather modification activities in the United States and
its territories be reported to the Secretary of Commerce. The National Oceanic and Atmospheric
Administration has implemented the Act and the current reporting requirements are published in the
Code of Federal Regulations (15 CFR 908).
2. The intent of the program is to increase expertise in the field of weather modification, to allow
scientists and other concerned persons to have access to information on current and past efforts at
weather modification, to help avoid unneeded and wasteful duplications, to aid in preventing territorial
overlapping of weather modification operations, to provide data to assess possible harmful or
dangerous activities, and to furnish information to check both desirable and undesirable atmospheric
changes against records of weather modification efforts. To meet this objective, information is collected
on the location and size of the target area, names and addresses of sponsors and operators, beginning
and ending dates of the project, specific purpose, description of apparatus and seeding agents to be
used, number of days of operations, number of hours of operations of each type of weather
modification apparatus, and total amount of seeing agent used.
3. A Federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a
person be subject to a penalty for failure to comply with an information collection subject to the
requirements of the Paperwork Reduction Act of 1995 unless the information collection has a currently
valid OMB Control Number. The approved OMB Control Number for this information collection is 06480025. Without this approval, we could not conduct this information collection. Public reporting for this
information collection is estimated to be approximately 30 minutes per response, including the time for
reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and
completing and reviewing the information collection. All responses to this information collection are
mandatory pursuant to Public Law 92-205, enacted December 18, 1971 (amended by Public Law 94-490,
Section 6(b), October 15, 1976). Send comments regarding this burden estimate or any other aspect of
this information collection, including suggestions for reducing this burden to the OAR Weather Program
Office at Weather.Modification@noaa.gov.