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[Lewis and Clark] 
[Weather, January 1805]  [1]
 

        


Day of
the Month
Ther.
at Sun symbol
rise


Weather

Wind at
Sun symbol rise
Thert.
at 4
P.M.


Weather

Wind at
4 P.M.

raise
or fall
River

Feet


Inches
Jany. 1
18 a
s
S E
34 a
f
N W
r
1
          2
4 b
s
N W
8 b
f a s
N.
          3
14 b.
c
N.
4 b
s
S E
          4
28 a
c a s
W.
4 b
c
N W
r
          5
20 b
c
N. W.
18 b
s
N. E.
r
2  
          6
11 b
c a s
N W
16 b
f
N W
r
3  
          7
22 b
f
N W
14 b
f
W
f
1  
          8
20 b
f
N W
10 b
f
N W
r
1  
          9
21 b
f
W
18 b
f a c
N W
      r  [2]
1  
         10
40 b
f
N W
     28  [3]
f
N W
      r  [4]
      1  [5]
         11
38 b
f
N W
14 b
f
N W
f
  ½
         12
20 b
f
N W
     16  [6]
f
N W
r
1  
         13
34 b
f
N W
     20  [7]
f
N W
      r  [8]
      2  [9]
         14
16 b
s
S E
8 b
c a s
S E
         15
10 b
f
E
3 a
        c  [10]
S W
r
1  
         16
36 a
c
W
16 a
f
S W
r
         17
2 b
c
W
12 b
f
N W
         18
        1 b  [11]
f
N W
7 a
f a c
N W
f
1  
         19
12 a
c
N E
6 b
f
N W
r
1  
           20h
        28  [12]
f
N E
9 b
c
S E
r
           ¾  [13]
         21
2 b
c
N E
8 a
f
S E
         r  [14]
         22
10 a
f a h
N W
19 a
c
N W
r
         23
2 b
s
E
2 b
c a s
N
f
         24
12 b
c
N. W.
2 b
f
N. W.
r
  ¼
         25
26 b
f
N W
4 b
f a c
W
         26
12 a
c
N E
20 a
f a c
S E
         27
20 a
c
S E
16 a
c
N W
r
2  
         28
2 b
f
N W
15 a
f
S W
         29
4 a
f
S W
16 a
f
W
r
  ½
         30
6 a
c
N W
14 a
c
N W
r
1  
         31
2 b
c a s
N W
8 a
f a c
N W
f
1  

 

        

[Remarks]  [15]

[2] visit the Mandans with a party of the men, who danced for
their amusement in the lodge of the Black Cat—  [16]
January 3rd the Snow was not considerable    the ground is now covered
9 inches deep—
6th at 12 oC. today two Luminous spots appeared on either
side of the sun extreemly bright
8th the snow is now ten inches deep.  [17]
12th singular appearance of three distinct Halo or luminus rings
about the moon appeared this evening at half after 9 P. M.
and continued one hour.    the moon formed the center
of the middle ring, the other two which lay N & S. of the
moon & had each of them a limb passing through the Moons
Center and projecting N & S a simidiameter beyond the
middle ring to which last they were equal in dimentions,
each ring appearing to subtend an angle of 15 degrees of a
great circle  [18]
15th an eclips of the moon total last night, visible here but par-
tially obscured by the clouds.
[18] at Sun rise 12° below 0  [19]
19th Ice now 3 feet thick on the most rapid part of the river—
[22] mist the afternon observation.  [20]
23rd the snow feel about 4 inches deep last night and continues
to snow
25th it frequently happens that the Sun symbol rises fair and in about 15
or 20 minutes it becomes suddonly 〈cloudy〉 turbid, as if the
had some chimical effect on the atmosphere.—
31st the Snow feel 2 Inches last night.




 

1. This weather table follows Lewis's in his Weather Diary; some discrepancies with those of Clark in Codex C and Voorhis No. 4 are noted. (Return to text.)

 

2. This "r" is found in Clark Voorhis No. 4. (Return to text.)

 

3. In Codex C Clark gives this temperature as "28 b." (Return to text.)

 

4. Clark has a blank here in Codex C. (Return to text.)

 

5. Here Clark has a blank in Codex C. (Return to text.)

 

6. Clark has "16 b" in Codex C. (Return to text.)

 

7. In Codex C Clark has "20 b." (Return to text.)

 

8. Clark has a blank here in Codex C. (Return to text.)

 

9. Clark has a blank here in Codex C. (Return to text.)

 

10. From the fifteenth through the rest of the month Lewis has reversed his "Weather" and "Wind at 4 P. M." columns; Clark follows this in Voorhis No. 4 but not in Codex C. The error has been corrected here to avoid confusion. (Return to text.)

 

11. In Voorhis No. 4 Clark gives this as "20 b." (Return to text.)

 

12. In Codex C Clark gives this as "28 a." (Return to text.)

 

13. Clark has "½" in Codex C but agrees with Lewis in Voorhis No. 4. (Return to text.)

 

14. The "r" is only in Clark's Voorhis No. 4. (Return to text.)

 

15. The remarks follow Lewis's in the Weather Diary, noting variations in Clark's Codex C. The dates are Clark's. Clark's remarks in Voorhis No. 4 are few and very brief. (Return to text.)

 

16. Clark has no remarks for January 2. (Return to text.)

 

17. Clark adds "accumolateing by frosts" in Codex C. (Return to text.)

 

18. Clark's brief remarks of this phenomenon in Voorhis No. 4 appear to be intended for either the tenth or the eleventh. One might interpret Lewis's remark as placed under the thirteenth, but Clark's Codex C version is clearly dated the twelfth. The captains are actually seeing an atmospheric event caused by the refraction of light by ice crystals. Neiburger, Edinger, & Bonner, 426. (Return to text.)

 

19. Clark has no remarks for this date. (Return to text.)

 

20. Clark has no remarks for this date. (Return to text.)












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