Sky & Telescope - April 2023 QR - 29

occasional cold front that sweeps southward out of Texas
brings considerable cloudiness to the plateau but doesn't cross
the mountains to reach Mazatlán.
Beyond Torreón, the eclipse track rises over the eastern
Sierra Madres and descends onto the Gulf Coast lowlands,
reaching the Rio Grande and the Texas border. Here, we
encounter a new menace: fog and low cloud that move inland
from the Gulf of Mexico, sometimes flooding the low-lying
landscape far enough inland to cover the entire eclipse track.
Satellite observations show that the average monthly cloudiness
more than doubles between Torreón and Piedras Negras,
to just under 50%.
Texas, Oklahoma, and Arkansas
The umbral shadow fords the Rio Grande and enters Texas
at 18:30 UT (13:30 CDT). Although the central duration is
beginning to decrease, it still clocks in at a generous 4m 27s.
The eclipse track crosses Texas diagonally from the southwest
to the northeast. Among the larger cities in the path are
San Antonio (on the southern limit), Austin (1m 43s), Waco
(4m 12s), Dallas (3m 51s), Fort Worth (2m 32s), and Texarkana
(2m 22s). Houston, the largest city in Texas, is located 200 km
outside the path and experiences a partial eclipse in which
the Moon covers 94.3% of the Sun's diameter.
Approximately 12.8 million people live in the eclipse
path through Texas. In comparison, the population living
within the entire path through the U.S. is approximately
31.8 million.
Leaving the Lone Star State, the lunar shadow cuts across
the southeastern corner of Oklahoma. Broken Bow
lies 14 km north of the central line and can expect
4m 17s of totality. Approximately half of Arkansas
lies within the path, including the capital city of
Little Rock, which is located within 18 km of
the path's southern limit. The city will experience
a total eclipse lasting 2m 26s.
Within the U.S., Texas weather offers
the best clear-sky prospects for the event,
according to cloud-cover records of the
past 22 years. Even so, Lone Star State
prospects are not particularly enticing
- satellite observations show an average
cloudiness of around 45% near the
Mexico border and 55% at the Oklahoma/Arkansas
line.
Aside from the usual cold fronts coming
from the north and jet-stream cloud
from the southwest, this region also has to
uFROM THE PACIFIC TO THE ATLANTIC Over
the April 8, 2024 eclipse's total duration of 3 hours
15 minutes, the Moon's shadow travels along a
14,800-km (9,200-mi) strip that extends from the
Pacific to the Atlantic. The percentage lines refer to
the eclipse magnitude, which is the fraction of the
Sun's diameter covered by the Moon.
Eclipse
ends at
sunrise
contend with moisture invading from the Gulf of Mexico.
South or southeasterly winds carry Gulf moisture onto the
coastal plains, flowing across low elevations onto the eclipse
track. Large sheets of stratus cloud may form overnight
and may or may not break up into afternoon cumulus
clouds when the Sun returns the next day. If Gulf moisture
arrives as a shallow layer with light winds, stratus clouds
Eclipse-Planning Essentials
Authors Fred Espenak and Jay Anderson have collaborated
on many eclipse-related publications for
nearly 30 years. Now retired, they've reunited to
publish Eclipse Bulletin: Total Solar Eclipse of 2024
April 08. It's filled with tables, charts, maps, weather
data, and eclipse circumstances for hundreds of
cities. Go to eclipsewise.com/pubs/EB2024.html for
more information.
Separately, Espenak has published Road Atlas for
the Total Solar Eclipse of 2024, a book of detailed
road maps covering the entire path from Mexico to
Newfoundland. The track is plotted in 30-second
steps, making it easy to estimate the duration of
totality from any location along the eclipse path. For
details, visit eclipsewise.com/pubs/Atlas2024.html.
Eclipse
begins at
sunset
Maximum
eclipse at
sunset
Greatest
eclipse
sk yand tele scope .o r g * APRIL 2023 29
17:30 UT
17:00 UT
e
r
n
20%
T
e
es
18:30 UT
l
e
cli
p
80%
lip
s
e
60%
20%
e
e
r
n
i
s
p
18:00 UT
li
m
it
40%
o
t
a
S
o
n
19:00 UT
s
e
80%
40%
li
mit of part i a l
c l
e
pc Eli
of
partia
60%
l
E
c
u
t
h
d
19:30 UT
20:00 UT
N
a
t
o
o
r
f
t
h
M a x
s e
b e g
i m
u
a
i n s
e
m
t
s u n
c l i p
r i s e
S&T ILLUSTRATION, SOURCE: FRED ESPENAK
e
s
s
a t
r i s
n
u
e
E c l i p
ast sunset
P
h
http://www.eclipsewise.com/pubs/EB2024.html http://www.eclipsewise.com/pubs/Atlas2024.html https://skyandtelescope.org/

Sky & Telescope - April 2023 QR

Table of Contents for the Digital Edition of Sky & Telescope - April 2023 QR

Contents
Sky & Telescope - April 2023 QR - Cover1
Sky & Telescope - April 2023 QR - Cover2
Sky & Telescope - April 2023 QR - 1
Sky & Telescope - April 2023 QR - Contents
Sky & Telescope - April 2023 QR - 3
Sky & Telescope - April 2023 QR - 4
Sky & Telescope - April 2023 QR - 5
Sky & Telescope - April 2023 QR - 6
Sky & Telescope - April 2023 QR - 7
Sky & Telescope - April 2023 QR - 8
Sky & Telescope - April 2023 QR - 9
Sky & Telescope - April 2023 QR - 10
Sky & Telescope - April 2023 QR - 11
Sky & Telescope - April 2023 QR - 12
Sky & Telescope - April 2023 QR - 13
Sky & Telescope - April 2023 QR - 14
Sky & Telescope - April 2023 QR - 15
Sky & Telescope - April 2023 QR - 16
Sky & Telescope - April 2023 QR - 17
Sky & Telescope - April 2023 QR - 18
Sky & Telescope - April 2023 QR - 19
Sky & Telescope - April 2023 QR - 20
Sky & Telescope - April 2023 QR - 21
Sky & Telescope - April 2023 QR - 22
Sky & Telescope - April 2023 QR - 23
Sky & Telescope - April 2023 QR - 24
Sky & Telescope - April 2023 QR - 25
Sky & Telescope - April 2023 QR - 26
Sky & Telescope - April 2023 QR - 27
Sky & Telescope - April 2023 QR - 28
Sky & Telescope - April 2023 QR - 29
Sky & Telescope - April 2023 QR - 30
Sky & Telescope - April 2023 QR - 31
Sky & Telescope - April 2023 QR - 32
Sky & Telescope - April 2023 QR - 33
Sky & Telescope - April 2023 QR - 34
Sky & Telescope - April 2023 QR - 35
Sky & Telescope - April 2023 QR - 36
Sky & Telescope - April 2023 QR - 37
Sky & Telescope - April 2023 QR - 38
Sky & Telescope - April 2023 QR - 39
Sky & Telescope - April 2023 QR - 40
Sky & Telescope - April 2023 QR - 41
Sky & Telescope - April 2023 QR - 42
Sky & Telescope - April 2023 QR - 43
Sky & Telescope - April 2023 QR - 44
Sky & Telescope - April 2023 QR - 45
Sky & Telescope - April 2023 QR - 46
Sky & Telescope - April 2023 QR - 47
Sky & Telescope - April 2023 QR - 48
Sky & Telescope - April 2023 QR - 49
Sky & Telescope - April 2023 QR - 50
Sky & Telescope - April 2023 QR - 51
Sky & Telescope - April 2023 QR - 52
Sky & Telescope - April 2023 QR - 53
Sky & Telescope - April 2023 QR - 54
Sky & Telescope - April 2023 QR - 55
Sky & Telescope - April 2023 QR - 56
Sky & Telescope - April 2023 QR - 57
Sky & Telescope - April 2023 QR - 58
Sky & Telescope - April 2023 QR - 59
Sky & Telescope - April 2023 QR - 60
Sky & Telescope - April 2023 QR - 61
Sky & Telescope - April 2023 QR - 62
Sky & Telescope - April 2023 QR - 63
Sky & Telescope - April 2023 QR - 64
Sky & Telescope - April 2023 QR - 65
Sky & Telescope - April 2023 QR - 66
Sky & Telescope - April 2023 QR - 67
Sky & Telescope - April 2023 QR - 68
Sky & Telescope - April 2023 QR - 69
Sky & Telescope - April 2023 QR - 70
Sky & Telescope - April 2023 QR - 71
Sky & Telescope - April 2023 QR - 72
Sky & Telescope - April 2023 QR - 73
Sky & Telescope - April 2023 QR - 74
Sky & Telescope - April 2023 QR - 75
Sky & Telescope - April 2023 QR - 76
Sky & Telescope - April 2023 QR - 77
Sky & Telescope - April 2023 QR - 78
Sky & Telescope - April 2023 QR - 79
Sky & Telescope - April 2023 QR - 80
Sky & Telescope - April 2023 QR - 81
Sky & Telescope - April 2023 QR - 82
Sky & Telescope - April 2023 QR - 83
Sky & Telescope - April 2023 QR - 84
Sky & Telescope - April 2023 QR - Cover3
Sky & Telescope - April 2023 QR - Cover4
https://www.nxtbook.com/nxtbooks/aas/st_202405
https://www.nxtbook.com/nxtbooks/aas/st_202404_qr
https://www.nxtbook.com/nxtbooks/aas/st_202404
https://www.nxtbook.com/nxtbooks/aas/st_202403
https://www.nxtbook.com/nxtbooks/aas/st_202402
https://www.nxtbook.com/nxtbooks/aas/st_202401_aus
https://www.nxtbook.com/nxtbooks/aas/st_202401
https://www.nxtbook.com/nxtbooks/aas/st_202312_aus
https://www.nxtbook.com/nxtbooks/aas/st_202312
https://www.nxtbook.com/nxtbooks/aas/st_202311
https://www.nxtbook.com/nxtbooks/aas/st_202310
https://www.nxtbook.com/nxtbooks/aas/st_202309
https://www.nxtbook.com/nxtbooks/aas/st_202308
https://www.nxtbook.com/nxtbooks/aas/st_202307
https://www.nxtbook.com/nxtbooks/aas/st_202306
https://www.nxtbook.com/nxtbooks/aas/st_202305
https://www.nxtbook.com/nxtbooks/aas/st_202304
https://www.nxtbook.com/nxtbooks/aas/st_202304_qr
https://www.nxtbook.com/nxtbooks/aas/st_202303
https://www.nxtbook.com/nxtbooks/aas/st_202302
https://www.nxtbook.com/nxtbooks/aas/st_202301
https://www.nxtbook.com/nxtbooks/aas/st_202212
https://www.nxtbook.com/nxtbooks/aas/st_202211
https://www.nxtbook.com/nxtbooks/aas/st_202210
https://www.nxtbook.com/nxtbooks/aas/st_202209
https://www.nxtbook.com/nxtbooks/aas/st_202208
https://www.nxtbook.com/nxtbooks/aas/st_202207
https://www.nxtbook.com/nxtbooks/aas/st_202206
https://www.nxtbook.com/nxtbooks/aas/st_202205
https://www.nxtbook.com/nxtbooks/aas/st_202204
https://www.nxtbook.com/nxtbooks/aas/st_202203
https://www.nxtbook.com/nxtbooks/aas/st_202202
https://www.nxtbook.com/nxtbooks/aas/st_202201
https://www.nxtbook.com/nxtbooks/aas/st_202112
https://www.nxtbook.com/nxtbooks/aas/st_202111
https://www.nxtbook.com/nxtbooks/aas/st_202110
https://www.nxtbook.com/nxtbooks/aas/st_202109
https://www.nxtbook.com/nxtbooks/aas/st_202108
https://www.nxtbook.com/nxtbooks/aas/st_202107
https://www.nxtbook.com/nxtbooks/aas/st_202106
https://www.nxtbook.com/nxtbooks/aas/st_202105
https://www.nxtbook.com/nxtbooks/aas/st_202104
https://www.nxtbook.com/nxtbooks/aas/st_202103
https://www.nxtbook.com/nxtbooks/aas/st_202102
https://www.nxtbook.com/nxtbooks/aas/st_202101
https://www.nxtbook.com/nxtbooks/aas/skywatch_2021
https://www.nxtbook.com/nxtbooks/aas/st_202012
https://www.nxtbook.com/nxtbooks/aas/st_202011
https://www.nxtbook.com/nxtbooks/aas/st_202010
https://www.nxtbook.com/nxtbooks/aas/st_202009
https://www.nxtbook.com/nxtbooks/aas/st_202008
https://www.nxtbook.com/nxtbooks/aas/st_202007
https://www.nxtbook.com/nxtbooks/aas/st_202006
https://www.nxtbook.com/nxtbooks/aas/st_202005
https://www.nxtbook.com/nxtbooks/aas/st_202004
https://www.nxtbook.com/nxtbooks/aas/st_202003
https://www.nxtbook.com/nxtbooks/aas/st_202002
https://www.nxtbook.com/nxtbooks/aas/st_202001
https://www.nxtbook.com/nxtbooks/aas/st_201912
https://www.nxtbook.com/nxtbooks/aas/st_201911
https://www.nxtbook.com/nxtbooks/aas/st_201910
https://www.nxtbook.com/nxtbooks/aas/st_201909
https://www.nxtbook.com/nxtbooks/aas/st_201908
https://www.nxtbook.com/nxtbooks/aas/st_201907
https://www.nxtbook.com/nxtbooks/aas/st_201906
https://www.nxtbook.com/nxtbooks/aas/st_201905
https://www.nxtbook.com/nxtbooks/aas/st_201904
https://www.nxtbook.com/nxtbooks/aas/st_201903
https://www.nxtbook.com/nxtbooks/aas/st_201902
https://www.nxtbook.com/nxtbooks/aas/st_201901
https://www.nxtbook.com/nxtbooks/aas/st_201812
https://www.nxtbook.com/nxtbooks/aas/st_201811
https://www.nxtbook.com/nxtbooks/aas/st_201810
https://www.nxtbook.com/nxtbooks/aas/st_201809
https://www.nxtbook.com/nxtbooks/aas/st_201808
https://www.nxtbook.com/nxtbooks/aas/st_201807
https://www.nxtbook.com/nxtbooks/aas/st_201806
https://www.nxtbook.com/nxtbooks/aas/st_201805
https://www.nxtbook.com/nxtbooks/aas/st_201804
https://www.nxtbook.com/nxtbooks/aas/st_201803
https://www.nxtbook.com/nxtbooks/aas/st_201802
https://www.nxtbook.com/nxtbooks/aas/st_201801
https://www.nxtbook.com/nxtbooks/aas/st_201712
https://www.nxtbook.com/nxtbooks/aas/st_201711
https://www.nxtbook.com/nxtbooks/aas/st_201710
https://www.nxtbook.com/nxtbooks/aas/st_201709
https://www.nxtbook.com/nxtbooks/aas/st_201708
https://www.nxtbook.com/nxtbooks/aas/st_201707
https://www.nxtbook.com/nxtbooks/aas/st_201706
https://www.nxtbook.com/nxtbooks/aas/st_201705
https://www.nxtbook.com/nxtbooks/aas/st_201704
https://www.nxtbook.com/nxtbooks/aas/st_201703
https://www.nxtbook.com/nxtbooks/aas/st_201702
https://www.nxtbook.com/nxtbooks/aas/st_201701
https://www.nxtbook.com/nxtbooks/aas/st_201612
https://www.nxtbook.com/nxtbooks/aas/st_201611
https://www.nxtbook.com/nxtbooks/aas/st_201610
https://www.nxtbook.com/nxtbooks/aas/st_201609
https://www.nxtbook.com/nxtbooks/aas/st_201608
https://www.nxtbook.com/nxtbooks/aas/st_201607
https://www.nxtbook.com/nxtbooks/aas/st_201606
https://www.nxtbook.com/nxtbooks/aas/st_201605
https://www.nxtbook.com/nxtbooks/aas/st_201604
https://www.nxtbook.com/nxtbooks/aas/st_201603
https://www.nxtbook.com/nxtbooks/aas/st_201602
https://www.nxtbook.com/nxtbooks/aas/st_201601
https://www.nxtbook.com/nxtbooks/aas/st_201512
https://www.nxtbook.com/nxtbooks/aas/st_201511
https://www.nxtbook.com/nxtbooks/aas/st_201510
https://www.nxtbook.com/nxtbooks/aas/st_201509
https://www.nxtbook.com/nxtbooks/aas/st_201508
https://www.nxtbook.com/nxtbooks/aas/st_201507
https://www.nxtbook.com/nxtbooks/aas/st_201506
https://www.nxtbook.com/nxtbooks/aas/st_201505
https://www.nxtbook.com/nxtbooks/aas/st_201504
https://www.nxtbook.com/nxtbooks/aas/st_201503
https://www.nxtbook.com/nxtbooks/aas/st_201502
https://www.nxtbook.com/nxtbooks/aas/st_201501
https://www.nxtbook.com/nxtbooks/aas/st_201412
https://www.nxtbook.com/nxtbooks/aas/st_201411
https://www.nxtbook.com/nxtbooks/aas/st_201410
https://www.nxtbook.com/nxtbooks/aas/st_201409
https://www.nxtbook.com/nxtbooks/aas/st_201408
https://www.nxtbook.com/nxtbooks/aas/st_201407
https://www.nxtbook.com/nxtbooks/aas/st_201406
https://www.nxtbook.com/nxtbooks/aas/st_mars
https://www.nxtbook.com/nxtbooks/aas/st_201405
https://www.nxtbook.com/nxtbooks/aas/st_201404
https://www.nxtbook.com/nxtbooks/aas/st_201403
https://www.nxtbook.com/nxtbooks/aas/st_201402
https://www.nxtbook.com/nxtbooks/aas/st_201401
https://www.nxtbook.com/nxtbooks/aas/st_201312
https://www.nxtbook.com/nxtbooks/aas/st_201311
https://www.nxtbook.com/nxtbooks/aas/st_201310
https://www.nxtbook.com/nxtbooks/aas/st_201309
https://www.nxtbook.com/nxtbooks/aas/st_201308
https://www.nxtbook.com/nxtbooks/aas/st_201307
https://www.nxtbook.com/nxtbooks/aas/st_201306
https://www.nxtbook.com/nxtbooks/aas/st_201305
https://www.nxtbook.com/nxtbooks/aas/st_201304
https://www.nxtbook.com/nxtbooks/aas/st_201303
https://www.nxtbook.com/nxtbooks/aas/st_201302
https://www.nxtbook.com/nxtbooks/aas/st_201301
https://www.nxtbook.com/nxtbooks/aas/st_201212
https://www.nxtbook.com/nxtbooks/aas/st_201211
https://www.nxtbook.com/nxtbooks/aas/st_201210
https://www.nxtbook.com/nxtbooks/aas/st_201209
https://www.nxtbook.com/nxtbooks/aas/st_201208
https://www.nxtbook.com/nxtbooks/aas/st_201207
https://www.nxtbook.com/nxtbooks/aas/st_201206
https://www.nxtbook.com/nxtbooks/aas/st_201205
https://www.nxtbook.com/nxtbooks/aas/st_201204
https://www.nxtbook.com/nxtbooks/aas/st_201203
https://www.nxtbook.com/nxtbooks/aas/st_201202
https://www.nxtbook.com/nxtbooks/aas/st_201201
https://www.nxtbook.com/nxtbooks/aas/st_201112
https://www.nxtbook.com/nxtbooks/aas/st_201111
https://www.nxtbook.com/nxtbooks/aas/st_201110
https://www.nxtbook.com/nxtbooks/aas/st_201109
https://www.nxtbook.com/nxtbooks/aas/st_201108
https://www.nxtbook.com/nxtbooks/aas/st_201107
https://www.nxtbook.com/nxtbooks/aas/st_201106
https://www.nxtbook.com/nxtbooks/aas/st_201105
https://www.nxtbook.com/nxtbooks/aas/st_201104
https://www.nxtbook.com/nxtbooks/aas/st_201103
https://www.nxtbook.com/nxtbooks/aas/st_201102
https://www.nxtbook.com/nxtbooks/aas/st_201101
https://www.nxtbook.com/nxtbooks/aas/st_201012
https://www.nxtbook.com/nxtbooks/aas/st_201011
https://www.nxtbook.com/nxtbooks/aas/st_201010
https://www.nxtbook.com/nxtbooks/aas/st_201009
https://www.nxtbook.com/nxtbooks/aas/st_201008
https://www.nxtbook.com/nxtbooks/aas/st_201007
https://www.nxtbook.com/nxtbooks/aas/st_201006
https://www.nxtbook.com/nxtbooks/aas/st_201005
https://www.nxtbook.com/nxtbooks/aas/st_201004
https://www.nxtbook.com/nxtbooks/aas/st_201003
https://www.nxtbook.com/nxtbooks/aas/st_201002
https://www.nxtbook.com/nxtbooks/aas/st_201001
https://www.nxtbookmedia.com