Alert archive / Illinois / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 30, NWS Chicago, IL

June 1, 2009Ford County, Iroquois County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Jun 1, 2009, 7:29 PM CDT for Ford County, Iroquois County, Illinois. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 1, 2009, 7:29 PM CDT (00:29 UTC)
Expired
Jun 1, 2009, 7:53 PM CDT
In force
24 min
Issued by
NWS Chicago, IL
Area
Storm-based polygon

Counties Ford County, IL, Iroquois County, IL

The radar

The Chicago radar (KLOT), 104 km from the middle of the area, began a volume at 00:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 1, 2:37 PM CDTSevere Thunderstorm WatchSPC7 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 6:26 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Jun 1, 6:26 PM CDT, 1 hour 3 minutes before
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Hazardous weather outlook, Jun 1, 3:47 PM CDT, 3 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
347 PM CDT MON JUN 1 2009

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
022100-
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-
347 PM CDT MON JUN 1 2009 /447 PM EDT MON JUN 1 2009/

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

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM CDT FOR
  MOST OF NORTHERN ILLINOIS AND ALL OF NORTHWEST INDIANA...
  INCLUDING THE NEARSHORE LOCATIONS. EVENING THUNDERSTORMS MAY
  PRODUCE:

  HAIL OF 1 INCH OR GREATER IN DIAMETER.
  DAMAGING WIND GUSTS TO 70 MPH.
  HEAVY DOWNPOURS.
  FREQUENT CLOUD TO GROUND LIGHTNING.

  AREAS AFFECTED AND TIMING:

  THUNDERSTORMS WILL BE A THREAT THROUGH THE NIGHT AHEAD OF A
  SAGGING COLD FRONT MOVING SOUTH FROM WISCONSIN. THE MORE SEVERE
  STORMS WILL GENERALLY BE SOUTH OF THE ILLINOIS COUNTIES ALONG
  THE WISCONSIN BORDER. THIS FRONT WILL STALL AND BECOME
  STATIONARY ACROSS NORTHERN ILLINOIS AND INDIANA OVERNIGHT.

  DISCUSSION:

  AS IMPULSES MOVE ACROSS NORTHERN ILLINOIS AND NORTHERN INDIANA FROM
  IOWA THIS EVENING INTO A PRIMED ENVIRONMENT FOR CONVECTION...
  THUNDERSTORMS WILL REACH STRONG TO SEVERE STAGES. A COLD FRONT
  SAGGING SOUTH FROM WISCONSIN WILL HELP TO STABILIZE NORTHERN
  COUNTIES EARLY IN THE EVENING. OTHERWISE EVENING COOLING WILL
  WORK TO ESTABLISH LESS VOLATILE CONDITIONS. HOWEVER SHOWERS AND
  THUNDERSTORMS WILL CONTINUE TO THREATEN NORTHERN ILLINOIS AND
  INDIANA AFTER THE WATCH EXPIRATION BUT ARE NOT EXPECTED TO BE AS
  VIGOROUS.

  HEAVY DOWNPOURS MAY LEAD TO FLOODING OF LOW LYING URBANIZED
  AREAS AND SMALL STREAMS.

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

OCCASIONAL THUNDERSTORMS CAN BE EXPECTED THROUGH EARLY WEDNESDAY
AS THE FRONT REMAINS NEARLY STATIONARY ACROSS NORTHERN ILLINOIS
AND INDIANA. THE POTENTIAL EXISTS FOR SOME STORMS TO BE SEVERE
AGAIN ON TUESDAY...WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY
THREAT.

WITH THE POTENTIAL FOR SEVERAL ROUNDS OF STRONG THUNDERSTORMS
OVER THE NEXT FEW DAYS...HEAVY RAINFALL AMOUNTS OF ONE AND A HALF
TO TWO INCHES...WITH LOCALLY HIGHER AMOUNTS...ARE POSSIBLE. THIS
RAINFALL WILL LIKELY LEAD TO RENEWED FLOODING ALONG AREA RIVERS
AS WELL AS URBANIZED...LOW LYING...AND POORLY DRAINED AREAS.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SATURDAY AND SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED ACROSS NORTHERN ILLINOIS AND NORTHWEST
INDIANA THROUGH 10 PM CDT THIS EVENING.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-022100-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
347 PM CDT MON JUN 1 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE ILLINOIS AND
INDIANA NEARSHORE WATERS THROUGH 10 PM CDT THIS EVENING. THUNDERSTORMS
WITH CLOUD TO GROUND LIGHTNING...LARGE HAIL...HEAVY DOWNPOURS AND WIND
GUSTS TO 50 KNOTS WILL BE POSSIBLE WITH THESE STORMS.

A SMALL CRAFT ADVISORY WILL ALSO BE IN EFFECT UNTIL 10 PM CDT FOR
STRONG NORTH TO NORTHEAST WINDS.

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

THERE IS A CHANCE OF THUNDERSTORMS THROUGH TUESDAY EVENING. WIND
GUSTS TO 40 KNOTS AND FREQUENT LIGHTNING ARE POSSIBLE WITH THESE
STORMS.

THUNDERSTORMS ARE POSSIBLE AGAIN SATURDAY AND SUNDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-022100-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TOW RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
347 PM CDT MON JUN 1 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THERE IS A THREAT OF THUNDERSTORMS ACROSS THE SOUTHERN PORTIONS
OF THE LAKE TONIGHT. THESE STORMS HAVE THE POTENTIAL TO PRODUCE
FREQUENT LIGHTNING...HEAVY DOWNPOURS AND WIND GUSTS TO 50 KNOTS.

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

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE SOUTHERN PART OF
LAKE MICHIGAN TUESDAY. WIND GUSTS TO 40 KNOTS AND FREQUENT
LIGHTNING ARE POSSIBLE WITH THESE STORMS.

THUNDERSTORMS ARE POSSIBLE AGAIN SATURDAY AND SUNDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

RLB

In the hours before

Local storm report, Jun 1, 5:25 PM CDT, 2 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
525 PM CDT MON JUN 01 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0511 PM     FUNNEL CLOUD     7 N WINNEBAGO           42.37N 89.24W
06/01/2009                   WINNEBAGO          IL   LAW ENFORCEMENT

            NEAR ROUTE 70 AND CEMETERY ROAD

&&

MORRIS
Local storm report, Jun 1, 5:38 PM CDT, 1 hour 51 minutes before
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Local storm report, Jun 1, 5:39 PM CDT, 1 hour 50 minutes before
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Local storm report, Jun 1, 6:14 PM CDT, 1 hour 15 minutes before
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Local storm report, Jun 1, 6:41 PM CDT, 48 minutes before
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Local storm report, Jun 1, 6:50 PM CDT, 39 minutes before
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Nearby

Severe Thunderstorm Warnings in Illinois, 2009Every severe thunderstorm warning in 2009

Sources

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