Alert archive / Illinois / Rip Current Statements in 2011

Rip Current Statement 4, NWS Chicago, IL

June 15, 2011Lake County, Illinois

NWS Chicago, IL issued this rip current statement at Jun 15, 2011, 9:40 AM CDT for Lake County, Illinois. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 15, 2011, 9:40 AM CDT (14:40 UTC)
Expired
Jun 15, 2011, 1:00 PM CDT
In force
3 hr
Issued by
NWS Chicago, IL

County Lake County, IL

The radar

The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 14:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 2.7 hours before the alert went out and 233 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2011-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2011-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
559 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

921 
WHUS43 KLOT 151440
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
940 AM CDT WED JUN 15 2011

...RIP CURRENTS POSSIBLE THIS MORNING...

ILZ006-014-151745-
/O.NEW.KLOT.RP.S.0004.110615T1440Z-110615T1800Z/
LAKE IL-COOK-
940 AM CDT WED JUN 15 2011

...RIP CURRENT RISK IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

* TIMING...UNTIL MIDDAY.

* IMPACTS...INCREASED THREAT OF RIP CURRENTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THERE IS A MODERATE RISK OF RIP CURRENTS.

RIP CURRENTS ARE POWERFUL CHANNELS OF WATER FLOWING QUICKLY AWAY
FROM SHORE...WHICH OCCUR MOST OFTEN AT LOW SPOTS OR BREAKS IN THE
SANDBAR AND IN THE VICINITY OF STRUCTURES SUCH AS GROINS...
JETTIES AND PIERS. HEED THE ADVICE OF LIFEGUARDS AND THE BEACH
PATROL. PAY ATTENTION TO FLAGS AND POSTED SIGNS. 

IF YOU BECOME CAUGHT IN A RIP CURRENT...DO NOT PANIC. REMAIN CALM
AND BEGIN TO SWIM PARALLEL TO SHORE. ONCE YOU ARE AWAY FROM THE
FORCE OF THE RIP CURRENT...BEGIN TO SWIM BACK TO THE BEACH. DO
NOT ATTEMPT TO SWIM DIRECTLY AGAINST A RIP CURRENT. EVEN A STRONG
SWIMMER CAN BECOME EXHAUSTED QUICKLY. 

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW RIP CURRENT HAZARD:

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RCVTECCHM

&&

$$


PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW RIP CURRENT HAZARD...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RCVTECCHM
1 follow-up statement
090 
WHUS43 KLOT 151752
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1252 PM CDT WED JUN 15 2011


ILZ006-014-151900-
/O.EXP.KLOT.RP.S.0004.000000T0000Z-110615T1800Z/
LAKE IL-COOK-
1252 PM CDT WED JUN 15 2011

...RIP CURRENT RISK WILL EXPIRE AT 1 PM CDT THIS AFTERNOON...

SOUTHEAST WINDS HAVE DIMINISHED SIGNIFICANTLY SINCE EARLIER THIS 
MORNING...ALLOWING WAVES TO SUBSIDE AND THE RIP CURRENT RISK TO 
DIMINISH. 

$$


PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW RIP CURRENT HAZARD...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RCVTECCHM

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 2:53 AM CDTSevere Thunderstorm WarningLOTGrundy, LaSalle, Livingston37 min
Jun 15, 3:40 AM CDTSpecial Weather StatementLOTKankakee, Will65 min
Jun 15, 4:35 AM CDTAreal Flood AdvisoryLOTFord, Iroquois, Livingston5 hr
Jun 15, 5:39 AM CDTSevere Thunderstorm WarningLOTIroquois66 min
Jun 15, 6:04 AM CDTSpecial Marine WarningLOT116 min
Jun 15, 8:10 AM CDTSpecial Marine WarningLOT106 min
Jun 15, 6:28 PM CDTTornado WarningLOTCook32 min
Jun 15, 6:54 PM CDTTornado WarningLOTKankakee51 min

Nearby

Rip Current Statements in Illinois, 2011Every rip current statement in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.