Thursday, March 30, 2017

Morning Report - Weather, Traffic, Transit




000
FXUS63 KLOT 301118
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
618 AM CDT Thu Mar 30 2017

.SHORT TERM...
320 AM CDT

Through tonight...

Main forecast concerns/challenges will remain with continued
shower and thunderstorm chances this morning through early this
evening, with strong to severe storms still appearing highly
probable this afternoon thru early evening south of I-80. Although
the highest threat for severe weather will be for areas southeast
of a Pontiac to Kankakee to Valparaiso IN line, can`t rule out
isolated stronger storms further to the north across the Chicago
metro area.

Large upper level system continues to slowly progress east
through the central Plains at this time. With this in place,
continued stream of shortwave energy is lifting northeast over the
region. This support along with strong/focused isentropic ascent
over northern Illinois has allowed the scattered showers to become
more widespread early this morning. Instability has already
worked its way north across the area with MUCAPE in upwards of 500
J/KG already situated over the southern portions of the CWA. This
has allowed scattered thunderstorms to occur over much of the
CWA. With this continued forcing and instability in place, expect
the more widespread nature of this precip and thunder chances to
continue through much of early this morning. Focused ascent then
lifts north closer to mid morning, however, given large scale lift
still present, most locations will likely still observe isolated
to scattered showers. Thunder threat may also lower for the time
being but instability remains in place so can`t still rule out
isolated thunder. As PWAT axis of an inch or more continues to
slide overhead, periods of heavy rainfall will remain a
possibility anytime this morning. Don`t anticipate any widespread
severe weather through anytime this morning, but with instability
likely to continue to increase and with high potential for
stronger forcing in place, can`t rule out an isolated stronger
storm and small hail.

Any lull with any precip looks to be short lived later this
morning, as additional upstream energy along with lifting surface
reflection and boundary support continued precip development to
lift north. This should bring another period of showers and
thunderstorms to much of northern Illinois and northwest Indiana
by late morning into midday. By early afternoon, guidance
indicating a substantial increase in instability over the area,
with instability axis situated from east central Illinois and
northwest Indiana up into the southern part of the lake. Its
during the early to mid afternoon time frame that I think hail
could be possible across the eastern two thirds of the CWA, mainly
areas east/southeast of a Peru to Chicago line. Confidence to the
extent of this hail is lower, but guidance indicating the
possibility for very steep mid level lapse rates to be in place
during this time and think the threat of hail remains. Any surface
based instability should still be lacking, so a wind threat at
this time would be low to nonexistent. However, any storms will
continue to have a chance to produce heavy rainfall.

As we move forward into the mid to late afternoon time frame, 21-
01Z, do think an increased threat for severe weather will occur.
At this time, this threat appears to be for areas southeast of a
Pontiac to Kankakee to Valparaiso IN line. During this time
surface low and boundary really lift north into the southern
portions of the CWA. Guidance indicating the possibility for any
capping inversion to erode, and surface/ML instability to increase
for these areas. This will present a damaging wind threat along
with a hail threat for any storms during this time. As renewed
forcing arrives over the region with the upper level low finally
swinging through, should see scattered storms fire up across
central Illinois. Steering flow will be to the east northeast,
with these storms possibly getting into this area anytime around
21z or there after. Guidance is still varying to the northern
extent of the strongest development, with the higher threat of
more widespread severe still just to the south of the CWA.
However, with this area getting into the warm sector, surface
based instability present, and with bulk shear averaging out
around 35-45 KT, still think there is a threat for a period of
more organized development this afternoon into the early evening.
Once again, hail and damaging winds are the main threats. Some
uncertainty with the mode of convection though, but with the
expected bulk shear, cannot rule out the potential for some
isolated supercellular structures. If this scenario were to occur,
an isolated tornado threat could briefly present itself. Will
continue to monitor this potential, as well as the potential for a
slightly northward shift to the threat area this afternoon. Any
threat of severe weather should come down by early this evening.

Rodriguez

&&
 
 
 
 Even with the current weather, traffic is only moderately congested. 
These two red blobs you see indicating heavy congestion are isolated incidences only.
 
 
Chicago Expressways 
 
 
This data is no older than 5 minutes old. The oldest report was generated on 30-Mar-2017 8:21:16 AM CDT

Kennedy Expressway (I-90, I-90/94)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Kennedy from O'Hare to I-290/Jane Byrne Interchange 81 12
Inbound Kennedy from Montrose to I-290/Jane Byrne Interchange 48 10
Inbound Kennedy from Ohio to I-290/Jane Byrne Interchange 3 23
Inbound Kennedy from O'Hare to Montrose 34 15
Inbound Kennedy Reversibles from Montrose to Ohio 35 12
Outbound Kennedy Reversibles from Ohio to Montrose N/A N/A
Outbound Kennedy from I-290/Jane Byrne Interchange to O'Hare 38 28
Outbound Kennedy from I-290/Jane Byrne Interchange to Montrose 16 30
Outbound Kennedy from I-290/Jane Byrne Interchange to Ohio 2 34
Outbound Kennedy from Montrose to O'Hare 22 27

Edens Expressway (I-94)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Edens from Deerfield Rd to I-290/Jane Byrne Interchange (via Kennedy) 76 20
Inbound Edens from Lake Cook to I-290/Jane Byrne Interchange (via Kennedy) 73 19
Inbound Edens from Dempster to I-290/Jane Byrne Interchange (via Kennedy) 65 14
Inbound Edens from Deerfield Rd to Montrose 28 36
Inbound Edens from Lake Cook to Montrose 26 34
Inbound Edens from Dempster to Montrose 17 23
Outbound Edens from I-290/Jane Byrne Interchange (via Kennedy) to Deerfield Rd 35 44
Outbound Edens from I-290/Jane Byrne Interchange (via Kennedy) to Lake Cook 33 42
Outbound Edens from I-290/Jane Byrne Interchange (via Kennedy) to Dempster 24 37
Outbound Edens from Montrose to Deerfield 19 55
Outbound Edens from Montrose to Lake Cook 17 52
Outbound Edens from Montrose to Dempster 8 49

Eisenhower Expressway (I-290)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound I-290 from Thorndale to I-90/94/Jane Byrne Interchange 73 21
Inbound Eisenhower from Wolf to I-90/94/Jane Byrne Interchange 58 14
Inbound Eisenhower from Harlem to I-90/94/Jane Byrne Interchange 41 13
Outbound I-290 from I-90/94/Jane Byrne Interchange to Thorndale 56 27
Outbound Eisenhower from I-90/94/Jane Byrne Interchange to Wolf 32 26
Outbound Eisenhower from I-90/94/Jane Byrne Interchange to Harlem 17 31

Dan Ryan Expressway (I-90/94)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Dan Ryan Express from 95th St to I-290/Jane Byrne Interchange 17 40
Inbound Dan Ryan (via Locals) from 95th St to I-290/Jane Byrne Interchange 15 44
Outbound Dan Ryan Express from I-290/Jane Byrne Interchange to 95th St 11 53
Outbound Dan Ryan (via Locals) from I-290/Jane Byrne Interchange to 95th St 11 48

I-57
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound I-57 from I-80 to I-290/Jane Byrne Interchange (via Dan Ryan) 50 31
Inbound I-57 from I-80 to Dan Ryan/95th St 34 25
Outbound I-57 from I-290/Jane Byrne Interchange (via Dan Ryan) to I-80 28 52
Outbound I-57 from Dan Ryan/95th St to I-80 17 48

Stevenson Expressway (I-55)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Stevenson from I-355 to Dan Ryan 67 22
Inbound Stevenson from I-294 to Dan Ryan 57 17
Inbound Stevenson from Harlem to Dan Ryan 41 13
Outbound Stevenson from Dan Ryan to I-355 32 45
Outbound Stevenson from Dan Ryan to I-294 23 41
Outbound Stevenson from Dan Ryan to Harlem 13 42

Bishop Ford Freeway (I-94)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Bishop Ford from I-80 to I-290/Jane Byrne Interchange (via Dan Ryan) 78 18
Inbound Bishop Ford from I-80 to Dan Ryan/95th 61 12
Outbound Bishop Ford from I-290/Jane Byrne Interchange (via Dan Ryan) to I-80 24 52
Outbound Bishop Ford from Dan Ryan/95th to I-80 14 55

Kingery Expressway (I-80/94)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound Kingery from State Line to I-290/Jane Byrne Interchange (via Dan Ryan Express) 81 21
Inbound Kingery from State Line to I-94/Bishop Ford 3 55
Outbound Kingery from I-290/Jane Byrne Interchange (via Dan Ryan Express) to State Line 28 52
Outbound Kingery from I-94/Bishop Ford to State Line 4 55

Lake Shore Drive (US-41)
Travel Time Segment Travel Time (minutes) Speed (mph)
Inbound North Lake Shore Dr from Bryn Mawr to Randolph 35 13
Outbound North Lake Shore Dr from Randolph to Bryn Mawr 8 42
Inbound South Lake Shore Dr from 55th St to Jackson 13 32
Outbound South Lake Shore Dr from Jackson to 55th St 8 41

Jane Addams Memorial (Northwest) Tollway (I-90)
Travel Time Segment Travel Time (minutes) Speed (mph)
EB I-90 from Elgin to Schaumburg-Rt 53 15 55
EB I-90 from Schaumburg-Rt 53 to O'Hare Area 11 55
WB I-90 from O'Hare Area to Schaumburg-Rt 53 10 55
WB I-90 from Schaumburg-Rt 53 to Elgin 15 55

Ronald Reagan Memorial Tollway (I-88)
Travel Time Segment Travel Time (minutes) Speed (mph)
EB I-88 from Aurora 61 to Oak Brook 17 60
WB I-88 from Oak Brook to Aurora 19 60

Veterans Memorial (North-South) Tollway (I-355)
Travel Time Segment Travel Time (minutes) Speed (mph)
NB I-355 from I-80 to Boughton Rd 13 64
NB I-355 from Boughton Rd to Army Trail Rd 14 60
SB I-355 from Army Trail Rd to Boughton Rd 14 60
SB I-355 from Boughton Rd to I-80 13 64

Tri-State Tollway (I-294, I-94)
Travel Time Segment Travel Time (minutes) Speed (mph)
NB I-294 from I-80/163rd St to 83rd St 14 59
NB I-294 from 83rd St to Cermak/Roosevelt 19 34
NB I-294 from Cermak/Roosevelt to I-190/O'Hare 19 33
NB I-294 from I-190/O'Hare to I-94/Edens 13 58
WB I-94 from I-94/Edens to Waukegan 18 65
EB I-94 from Waukegan to I-94/Edens 18 66
SB I-294 from I-94/Edens to I-190/O'Hare 12 59
SB I-294 from I-190/O'Hare to Cermak/Roosevelt 11 55
SB I-294 from Cermak/Roosevelt to 82nd St 11 56
SB I-294 from 82nd St to I-80/163rd St 14 59
 
 
 
 
All CTA train lines running normally. MULTIPLE Bus System Alerts. There is an 
important upcoming RED Line Alert. 
 
 

 
 
                           There are Metra delays this morning!
 
 
 LOTS of notifications from Metra's official ROCK ISLAND LINE on TWITTER
 
  

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