turn north of the warm front south of the warm front warm ...mia. prepare for and be aware of...
Post on 24-Jan-2021
2 Views
Preview:
TRANSCRIPT
Nat
iona
l Oce
anic
and
Atm
osph
eric
Adm
inis
tratio
nN
OAA
- ht
tps:
//ww
w.no
aa.g
ovN
OAA
Edu
catio
n Po
rtal -
http
s://w
ww.
noaa
.gov
/edu
catio
n
Nat
iona
l Wea
ther
Ser
vice
NW
S Ed
ucat
ion
- http
s://w
ww.
wea
ther
.gov
/ow
lieJe
tStre
am -
An O
nlin
e Sc
hool
for W
eath
er -
http
s://w
ww.
wea
ther
.gov
/jets
tream
NO
AA
Wea
ther
wis
e
War
m fr
ont
War
mer
air
repl
acin
g co
ol (o
r col
d) a
ir
Col
d fro
ntC
old
(or c
oole
r)ai
r rep
laci
ng
war
mer
air
Dry
line
Boun
dary
div
idin
gdr
y de
sert
air
from
moi
st
gulf
air
HHi
gh p
ress
ure
Loca
tion
of
high
est s
urfa
ceai
r pre
ssur
e
Stat
iona
ry fr
ont
Non
-mov
ing
boun
dary
divi
ding
war
m
air f
rom
coo
ler a
ir
Surfa
ce w
ind
Jet
stre
am
LLo
w p
ress
ure
Loca
tion
of
low
est s
urfa
ce
air p
ress
ure
idin
gai
r
HHi
ghpr
essu
reLo
catio
n of
hi
ghes
tsur
face
Surfa
ce w
ind
Jet
LLo
wpr
essu
reLo
catio
n of
lo
wes
tsur
face
HH
LHHHH
LLLLLHH
L
Jet s
tre
am
Equa
tor
Pola
r jet
str
eam Su
btro
pica
l je
t str
eam
Trop
ical
air
Tem
pera
teai
r
Pola
r air
Stro
ng w
inds
from
the
high
-pre
ssur
e sy
stem
car
ry c
olde
r, dr
ier a
ir in
to th
e da
rk b
lue
area
. As
the
cold
fron
t pa
sses
, pre
cipi
tatio
n en
ds a
nd s
kies
cle
ar fa
irly
rapi
dly.
Poss
ible
impa
cts
The
diffe
renc
e in
air
pres
sure
bet
wee
n tw
o po
ints
det
erm
ines
win
d sp
eed
and
dire
ctio
n. L
arge
pre
ssur
e di
ffere
nces
cau
se v
ery
stro
ng w
inds
. The
y ar
e m
ore
likel
y to
occ
ur in
win
ter a
nd c
an le
ad to
bliz
zard
con
ditio
ns
and
dang
erou
s w
ind
chills
. In
mou
ntai
nous
are
as, l
ight
ning
from
thun
ders
torm
s w
ith li
ttle
or n
o ra
infa
ll ca
n ig
nite
wild
fires
. The
se fi
res
may
spr
ead
rapi
dly
whe
n dr
iven
by
stro
ng w
inds
ass
ocia
ted
with
the
thun
ders
torm
.
Wea
ther
saf
ety
Rem
embe
r: Ic
e an
d Sn
ow, T
ake
It Sl
ow! b
oth
on a
nd o
ff th
e ro
ad. W
hile
driv
ing,
slo
w d
own
to re
duce
the
chan
ce o
f an
acci
dent
on
slip
pery
road
s. D
on’t
over
exer
t you
rsel
f whe
n sh
ovel
ing.
Avo
id p
rolo
nged
exp
osur
e to
col
d te
mpe
ratu
res,
whi
ch c
an c
ause
fros
tbite
and
/or h
ypot
herm
ia. P
repa
re fo
r and
be
awar
e of
pot
entia
l fire
ha
zard
s du
ring
dry
perio
ds.
Nor
th o
f the
col
d fr
ont
In th
e lig
ht b
lue
area
, the
air
tend
s to
be
cool
and
dry
. Clo
ser t
o th
e w
arm
fron
t, m
oist
ure
incr
ease
s. A
s a
resu
lt, c
loud
s th
icke
n,
whi
ch c
an le
ad to
rain
or s
now.
Poss
ible
impa
cts
War
m fr
onts
nea
r are
as o
f low
-pre
ssur
e ca
n br
ing
heav
y ra
in,
snow
, or s
leet
. Rai
n ca
n le
ad to
floo
ding
, whi
le s
now
and
sle
et
may
resu
lt in
a v
arie
ty o
f haz
ards
incl
udin
g sl
ick
road
s an
d po
wer
out
ages
.
Wea
ther
saf
ety
Nev
er d
rive
into
floo
ded
road
way
s or
aro
und
a ba
rrica
de. T
urn
Aro
und
Don
’t D
row
n! K
now
the
risks
of f
lood
s an
d pl
an y
our
evac
uatio
n ro
ute.
Hav
e ex
tra fo
od a
nd w
ater
in c
ase
you
lose
po
wer
or a
re tr
appe
d in
you
r hom
e. D
urin
g w
inte
r wea
ther
, driv
e sl
owly
or n
ot a
t all.
Nor
th o
f the
war
m fr
ont
War
m, m
oist
air
from
the
Gul
f of M
exic
o an
d At
lant
ic O
cean
mov
es in
to th
e gr
een
area
, in
crea
sing
tem
pera
ture
s an
d hu
mid
ity. S
how
ers
and
thun
ders
torm
s ca
n de
velo
p al
ong
and
in
adva
nce
of a
col
d fro
nt o
r dry
line
.
Poss
ible
impa
cts
War
m, m
oist
air
can
be fo
rced
upw
ards
as
it re
ache
s an
app
roac
hing
col
d fro
nt a
nd/o
r dry
line
. Th
is c
an c
ause
sev
ere
thun
ders
torm
s, fl
oodi
ng,
and
torn
adoe
s.
Wea
ther
saf
ety
Alw
ays
be W
eath
er-R
eady
— fo
reca
sts
can
prov
ide
seve
ral d
ays
adva
nce
notic
e of
sto
rms.
C
heck
them
regu
larly
. Be
prep
ared
and
W
hen
Thun
der R
oars
, Go
Indo
ors
to s
tay
safe
fro
m li
ghtn
ing.
Kno
w y
our s
afe
plac
e at
hom
e an
d w
ork.
Sou
th o
f the
war
m fr
ont
Sout
h of
the
fron
ts a
nd
wes
t of t
he d
ry li
neIn
the
oran
ge a
rea,
wea
ther
is g
ener
ally
dry
an
d m
ild. A
ppro
achi
ng fr
onts
can
lead
to h
igh
altit
ude
thun
ders
torm
s ov
er m
ount
ain
peak
s,
resu
lting
in s
trong
win
ds a
t the
sur
face
. Ove
r tim
e th
e ef
fect
s of
the
front
s w
ill di
min
ish.
To le
arn
mor
e ab
out t
he c
hara
cter
istic
s of
fron
ts,
expl
ore
the
rest
of t
he m
ap.
Poss
ible
impa
cts
Stro
ng s
urfa
ce w
inds
can
lead
to d
ust s
torm
s an
d w
ildfir
es. I
n So
uthe
rn C
alifo
rnia
, the
war
m,
dry
Sant
a An
a w
inds
blo
w to
war
ds th
e co
ast
from
the
high
des
ert a
reas
. Sea
sona
l hea
vy
rain
, eve
n fro
m d
ista
nt th
unde
rsto
rms,
can
lead
to
flas
h flo
ods
and
debr
is fl
ows
in ty
pica
lly v
ery
dry
area
s.
Wea
ther
saf
ety
Be a
lert
for d
ust s
torm
s, w
hich
can
com
e w
ith
little
war
ning
— P
ull A
side
, Sta
y A
live.
Pul
l far
of
f the
road
and
turn
all
car l
ight
s of
f. Fo
llow
ev
acua
tion
orde
rs d
urin
g fir
es. M
onito
r fo
reca
sts
for f
lash
floo
ds, w
hich
can
be
a ris
k m
any
mile
s fro
m a
sto
rm, e
spec
ially
in d
ry
valle
ys a
nd c
anyo
ns. D
on’t
be c
augh
t off
guar
d;
be p
repa
red
to m
ove
to h
ighe
r gro
und.
Expl
ore
mor
e w
eath
er p
heno
men
a at
ww
w.w
eath
er.g
ov/je
tstr
eam
Dra
win
g C
oncl
usio
ns •
Toas
ty W
ind
A Pr
essi
ng E
ngag
emen
t • G
oing
with
the
Flow
Sugg
este
d le
sson
s:
he w
eath
er w
e ex
perie
nce
ever
y da
y on
the
grou
nd is
a re
sult
of w
hat i
s ha
ppen
ing
far a
bove
our
hea
ds. U
p th
ere,
the
air i
s al
way
s m
ovin
g as
hea
t ene
rgy
is re
dist
ribut
ed a
cros
s th
e Ea
rth.
Met
eoro
logi
sts
stud
y ai
r mov
emen
t to
mak
e w
eath
er fo
reca
sts.
The
Sun
heat
s th
e Ea
rth, w
hich
then
hea
ts th
e ai
r in
the
atm
osph
ere.
Bec
ause
the
Sun
hits
the
equa
tor
mos
t dire
ctly,
the
air a
t the
equ
ator
rece
ives
mor
e he
at e
nerg
y th
an th
e ai
r clo
ser t
o th
e po
les.
Thi
s w
arm
air r
ises
bec
ause
it is
less
den
se th
an c
ool a
ir.
Whe
n th
e w
arm
air
reac
hes
the
uppe
r atm
osph
ere,
it c
an n
o lo
nger
rise
and
is fo
rced
tow
ard
the
pole
s.
As th
e ai
r coo
ls, i
t bec
omes
den
ser a
nd fa
lls b
ack
tow
ard
Earth
. Hig
h-pr
essu
re a
reas
form
whe
re c
oole
r
air i
s fa
lling
tow
ards
the
Earth
. Low
-pre
ssur
e ar
eas
form
whe
re w
arm
air
is ri
sing
. Air
circ
ulat
es fr
om
area
s of
hig
h pr
essu
re to
are
as o
f low
pre
ssur
e.
The
way
the
air m
oves
affe
cts
the
wea
ther
. Bet
wee
n th
e la
rge
area
s of
circ
ulat
ing
air,
jet s
trea
ms
form
.
Jet s
tream
s ar
e tu
be-li
ke p
aths
of s
trong
win
d m
ovin
g fro
m W
est t
o Ea
st a
roun
d th
e gl
obe.
The
pos
ition
and
stre
ngth
of j
et s
tream
s va
ry fr
om N
orth
to S
outh
, as
wel
l as
verti
cally
thro
ugho
ut th
e at
mos
pher
e.
The
loca
tion
of th
e je
t stre
ams
and
thei
r sea
sona
l mov
emen
t driv
e m
ajor
wea
ther
pat
tern
s ar
ound
the
wor
ld. I
n th
e U
nite
d St
ates
, col
d sn
aps
happ
en w
hen
the
pola
r jet
stre
am d
ips
sout
h. H
eat w
aves
can
occu
r whe
n th
e po
lar j
et s
tream
is v
ery
far n
orth
, allo
win
g fo
r war
m s
ub-tr
opic
al a
ir to
mov
e no
rth.
TBe
wea
ther
wis
e w
here
ver y
ou a
reTh
is m
ap s
how
s a
sim
plifi
ed fo
reca
st fo
r a s
ingl
e, h
ypot
hetic
al d
ay.
The
loca
tions
of t
he lo
w- a
nd h
igh-
pres
sure
sys
tem
s, je
t stre
am,
and
front
s sh
ape
the
wea
ther
that
a g
iven
regi
on m
ay e
xper
ienc
e.
Ther
e ca
n be
haz
ardo
us w
eath
er a
nyw
here
, at a
ny ti
me.
Beg
in
each
day
kno
win
g th
e w
eath
er fo
reca
st. I
f sev
ere
or e
xtre
me
wea
ther
is a
pos
sibi
lity,
per
iodi
cally
che
ck fo
r for
ecas
t upd
ates
. Be
pre
pare
d w
ith a
saf
ety
plan
. Hav
e a
“go-
kit”
with
impo
rtant
pr
oper
ty a
nd d
ocum
ents
read
y in
cas
e of
em
erge
ncy.
Hav
e at
leas
t a
thre
e-da
y su
pply
of f
ood
and
wat
er. L
earn
the
spec
ific
reco
mm
enda
tions
for r
egio
nal a
nd s
easo
nal w
eath
er h
azar
ds.
Lear
n m
ore
abou
t sea
sona
l saf
ety
at
http
s://w
ww.
wea
ther
.gov
/saf
etyc
ampa
ign.
C M Y CM MY
CY CMY
K
clou
dcha
rt_b
ack_
0829
19.a
i 1
8/
29/2
019
10:
57:1
4 A
Mcl
oudc
hart
_bac
k_08
2919
.ai
1
8/29
/201
9 1
0:57
:14
AM
top related