Yet Another Thunderstorm is on the Way!

Update June 23, 2015 9:00am: The storm dissipated last night with little rain in the immediate area. Today it's blue skies and calm. Now I must get back to work. Yesterday I hiked the property before the storm and send one photo to management re: issue at Wheaton's Lake 3.

Update 3:55pm: The storm is moving eastward. Not too bad, so far, but there is a line of thunderstorms extending to Iowa and thunderstorms are expected tonight. Satellite image per NOAA:  at 1945Z (2:45 pm CDT)

Update 10:25am: The masthead photo is an infrared image. Looks ugly in the Midwest. See notes at the end of this post.

Yet another thunderstorm is on the way. Over at the NOAA/NWS there is a "Severe Thunderstorm Watch." There is also a "Hazardous Weather Outlook". Here are the texts:

Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
443 AM CDT MON JUN 22 2015

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
230945-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
443 AM CDT MON JUN 22 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TODAY AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
    DAMAGING WINDS IN EXCESS OF 70 MPH.
    HAIL TO THE SIZE OF GOLFBALLS.
    HEAVY RAIN.
    FREQUENT CLOUD TO GROUND LIGHTNING.
    PERHAPS A TORNADO OR TWO.

  AREAS AFFECTED AND TIMING:

  THERE IS A CHANCE OF THUNDERSTORMS WITH AN ASSOCIATED LOW RISK
  OF DAMAGING WINDS LATE THIS MORNING INTO EARLY THIS
  AFTERNOON...MAINLY NORTH OF INTERSTATES 88 AND 290. THE
  POTENTIALLY MORE SIGNIFICANT THUNDERSTORM AND SEVERE WEATHER
  THREAT LOOKS TO BE EARLY THIS EVENING...ESPECIALLY NORTH OF
  INTERSTATE 80. THUNDERSTORMS WILL SPREAD SOUTH OF I-80 MID TO
  LATE EVENING WITH THE SEVERE THREAT GRADUALLY DIMINISHING.

  DISCUSSION:

  ISOLATED THUNDERSTORMS ARE POSSIBLE THROUGH MID MORNING AHEAD
  OF A CLUSTER OF THUNDERSTORMS THAT WILL RACE RAPIDLY EASTWARD
  ACROSS SOUTHERN WISCONSIN OR NORTHERN ILLINOIS LATE THIS
  MORNING OR EARLY THIS AFTERNOON. SOME LIMITED THREAT OF
  DAMAGING WINDS COULD ACCOMPANY THE STORMS LATE THIS MORNING
  INTO THIS AFTERNOON.

  EXPLOSIVE SEVERE THUNDERSTORM DEVELOPMENT IS EXPECTED ACROSS
  SOUTHERN WISCONSIN SOUTHWEST INTO IOWA LATE THIS AFTERNOON.
  THESE STORMS ARE THEN FORECAST TO SPREAD SOUTHEAST INTO
  NORTHERN ILLINOIS EARLY THIS EVENING. ASSUMING STORMS DEVELOP
  AS EXPECTED...THEY WOULD POSE A RISK OF LARGE AND DAMAGING HAIL
  AS WELL AS STRONG DAMAGING WINDS. AN ISOLATED TORNADO OR TWO
  CANNOT BE RULED OUT. IN ADDITION...THE STORMS WILL BE CAPABLE
  OF PRODUCING TORRENTIAL DOWNPOURS AND ISOLATED MINOR FLOODING
  PROBLEMS. THE THUNDERSTORMS WILL SPREAD SOUTHWARD AND AFFECT
  AREAS SOUTH OF INTERSTATE 80 BY MID TO LATE EVENING...THOUGH
  THE THREAT OF SEVERE WEATHER IS EXPECTED TO GRADUALLY DIMINISH
  AS THE EVENING WEARS ON.

MODERATE TO MAJOR FLOODING CONTINUES ON THE PORTIONS OF THE IROQUOIS
RIVER...MODERATE FLOODING CONTINUES ON THE ILLINOIS RIVER NEAR LA
SALLE...AND MINOR TO MODERATE FLOODING CONTINUES ON PORTIONS OF
THE KANKAKEE RIVER.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THUNDERSTORMS ARE POSSIBLE AGAIN AS EARLY AS WEDNESDAY...BUT ARE
MORE LIKELY WEDNESDAY NIGHT INTO THURSDAY MORNING. SOME OF THESE
STORMS COULD POTENTIALLY BE SEVERE...THOUGH THE MORE LIKELY HAZARD
WILL PROBABLY BE HEAVY RAINFALL AND THE THREAT OF FLASH FLOODING.

PORTIONS OF THE IROQUOIS...KANKAKEE...AND ILLINOIS RIVERS WILL
REMAIN IN FLOOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED...ESPECIALLY EARLY THIS EVENING.

&&

$$

---

Severe Thunderstorm Watch

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 332
NWS STORM PREDICTION CENTER NORMAN OK
935 AM CDT MON JUN 22 2015

SEVERE THUNDERSTORM WATCH 332 IS IN EFFECT UNTIL 300 PM CDT
FOR THE FOLLOWING LOCATIONS

ILC007-011-031-037-043-053-063-073-075-089-091-093-097-099-103-
105-111-123-141-155-161-175-195-197-201-222000-
/O.NEW.KWNS.SV.A.0332.150622T1435Z-150622T2000Z/

IL
.    ILLINOIS COUNTIES INCLUDED ARE

BOONE                BUREAU              COOK
DE KALB              DUPAGE              FORD
GRUNDY               HENRY               IROQUOIS
KANE                 KANKAKEE            KENDALL
LAKE                 LA SALLE            LEE
LIVINGSTON           MARSHALL            MCHENRY
OGLE                 PUTNAM              ROCK ISLAND
STARK                WHITESIDE           WILL
WINNEBAGO
$$

Notes:
NOAA/NWS infrared image and official comments:

"Meteorologists use color enhanced imagery as an aid in satellite interpretation. The colors enable them to easily and quickly see features which are of special interest. Usually they look for high clouds or areas with a large amount of water vapor.

In an infrared (IR) image cold clouds are high clouds, so the colors typically highlight the colder regions. The bar on the right side of the image indicates the pixel brightness values for the corresponding color. The intensity value represents emitted infrared radiation. The intensity of a pixel is recorded as a digital number (for example, in these images the numbers range from 0 to 255.) You can determine temperatures using one of the formulas below:

If B > 176, T = 418 - B; or
if B <= 176, T = 330 - (B/2)

Note that the resulting temperatures are in Kelvin.

To calculate the resulting Kelvin temperature to Fahrenheit: (K - 273.15) x 1.8 + 32.00.

To calculate the resulting Kelvin temperature to Celsius: C = K - 273.

(B = Brightness value; T = Temperature; F = Fahrenheit; C = Celsius)"

Here is the original link over at NOAA:

Click for current Eastern US Infrared Image