Alert archive / Illinois / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 162, NWS Quad Cities, IA

June 15, 2008Bureau County, Henry County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 15, 2008, 4:21 PM CDT for Bureau County, Henry 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 outline as issued.

The facts

Issued: Jun 15, 2008, 4:21 PM CDT (21:21 UTC)
Expired: Jun 15, 2008, 4:45 PM CDT
In force: 24 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon

Counties Bureau County, IL, Henry County, IL

The radar

The Quad Cities radar (KDVN), 72 km from the middle of the area, began a volume at 21:24 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 15, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.4 hours before the alert went out and 67 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 114 J/kg
Mixed-layer CIN: -307 J/kg
Mixed-layer LCL: 1821 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDVN 152121
SVRDVN
ILC011-073-152145-
/O.NEW.KDVN.SV.W.0162.080615T2121Z-080615T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
421 PM CDT SUN JUN 15 2008

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BUREAU COUNTY IN NORTH CENTRAL ILLINOIS...
  SOUTHEASTERN HENRY COUNTY IN NORTHWEST ILLINOIS...

* UNTIL 445 PM CDT.

* AT 419 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
  APPROXIMATELY NEAR KEWANEE...AND MOVING SOUTHEAST AT 54 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  NEPONSET...KEWANEE MUNICIPAL AIRPORT...JOHNSON SAUK TRAIL STATE
  PARK...GERMAN CORNER AND BRANDENBURG CORNERS

THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY
FROM WINDOWS.

LAT...LON 4123 8978 4123 8986 4115 8987 4115 9000
      4128 9014 4137 8998 4129 8978 4124 8970
TIME...MOT...LOC 2121Z 307DEG 47KT 4118 8985

$$

LE

1 follow-up statement

000 
WWUS53 KDVN 152136
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
435 PM CDT SUN JUN 15 2008

ILC073-152145-
/O.CAN.KDVN.SV.W.0162.000000T0000Z-080615T2145Z/
HENRY IL-
435 PM CDT SUN JUN 15 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENRY COUNTY IS
CANCELLED...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING SEVERE WEATHER 
HAS MOVED OUT OF THE WARNED AREA. THEREFORE THE SEVERE THUNDERSTORM 
WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT SUNDAY
EVENING FOR SOUTHEASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST
MISSOURI.

LAT...LON 4124 8970 4123 8978 4123 8986 4130 8986
      4129 8977 4127 8976 4127 8975
TIME...MOT...LOC 2135Z 280DEG 41KT 4122 8966

$$

ILC011-152145-
/O.CON.KDVN.SV.W.0162.000000T0000Z-080615T2145Z/
BUREAU IL-
435 PM CDT SUN JUN 15 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHWESTERN BUREAU COUNTY...

AT 433 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED APPROXIMATELY OVER NORTHEASTERN STARK COUNTY...OR 12 MILES
EAST OF KEWANEE...MOVING EAST AT 47 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT SUNDAY
EVENING FOR SOUTHEASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST
MISSOURI.

LAT...LON 4124 8970 4123 8978 4123 8986 4130 8986
      4129 8977 4127 8976 4127 8975
TIME...MOT...LOC 2135Z 280DEG 41KT 4122 8966

$$

LE/HAASE

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 Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 3:00 PM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Jun 15, 3:00 PM CDT, 1 hour 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
300 PM CDT SUN JUN 15 2008

.SYNOPSIS...
COLD FRONT TO MOVE ACROSS THE REGION TONIGHT FOLLOWED BY HIGH
PRESSURE RIDGE AND PLEASANT TEMPERATURES MONDAY THROUGH THURSDAY.
PATTERN BECOMES ACTIVE AGAIN LATE NEXT WEEK AND NEXT WEEKEND.

&&

.SHORT TERM...TONIGHT AND MONDAY...
WILL BRING COLD FRONT THROUGH THE REGION THIS EVENING WITH
THUNDERSTORMS GRADUALLY ENDING AS THE FRONT PUSHES OFF TO THE
SOUTHEAST. SOME OF THE STORMS WILL BE SEVERE ALONG WITH POSSIBLE
FLASH FLOODING IN THE HEAVIER STORMS AND ANY TRAINING THAT TAKES
PLACE. MONDAY LOOKS COOLER AS HIGH PRESSURE BUILDS INTO THE REGION.
TEMPERATURES SHOULD BE IN THE 70S.

.LONG TERM...MONDAY NIGHT THROUGH SUNDAY...
PLEASANT AND DRY WEATHER EXPECTED EARLY TO MIDDLE OF THE WEEK WITH
NORTHWEST FLOW AND SURFACE RIDGE OVER THE REGION. TEMPERATURES
SHOULD BE COMFORTABLE WITH BELOW NORMAL READINGS WITH MAXIMUM
TEMPERATURES IN THE 70S TO AROUND 80 AND MINIMUMS IN THE 50S TO
AROUND 60.

LATE NEXT WEEK AND NEXT WEEKEND...
PATTERN BECOMES ACTIVE AGAIN WITH TROFFINESS IN THE WESTERN UNITED
SENDING A SERIES OF SHORT WAVES ATOP THE RIDGE INTO THE MIDWEST.
POTENTIAL EXISTS AGAIN FOR SEVERE WEATHER AND HEAVY RAINS. HAVE
INCREASED POPS SOMEWHAT FOR FRIDAY AND AGAIN ON SUNDAY WHICH LOOK
THE MOST ACTIVE DAYS ACCORDING TO THE ECMWF MODEL.  ..HAASE..

&&

.AVIATION...
SCATTERED SHOWERS AND THUNDERSTORMS TO END AND SKIES TO CLEAR
TONIGHT BETWEEN 00 AND 06Z WITH VFR CONDITIONS AS CANADIAN HIGH
PRESSURE MOVES IN. SOME BRIEF MVFR CONDITIONS IN ANY TSRA/SHRA NEXT
3 TO 6 HOURS.  MOSTLY CLEAR CONDITIONS LAT TONIGHT THROUGH MONDAY
WITH VISIBILITIES GREATER THAN 7 MILES.    ..NICHOLS

&&

.HYDROLOGY...
A HISTORIC HYDROLOGIC EVENT CONTINUES UNFOLDING WITH UNPRECEDENTED
IMPACTS AT MANY LOCATIONS ALONG THE LARGER RIVERS AND STREAMS IN
EASTERN IOWA. MAJOR TO RECORD FLOODING IS ONGOING...OR FORECAST...IN
THESE LOCATIONS AS WELL AS AT MANY LOCATIONS ON THE MISSISSIPPI
RIVER ESPECIALLY DOWNSTREAM OF THE QUAD CITIES. MODERATE TO MAJOR
FLOODING IS EXPECTED ON THE ROCK RIVER IN NORTHWEST ILLINOIS.

ON THE IOWA RIVER...THE CORALVILLE RESERVOIR POOL HAS CRESTED. THE
IOWA RIVER IN IOWA CITY IS CRESTING AT THIS TIME. ON THE CEDAR
RIVER...THE CREST HAS NOW PUSHED DOWNSTREAM OF THE CONESVILLE AREA.
WE DO NOT EXPECT TODAY/S RAINFALL TO PUSH THE IOWA RIVER HIGHER IN
THE IOWA CITY AREA.

ON THE IOWA RIVER...DOWNSTREAM OF COLUMBUS JUNCTION...AND ON THE
MISSISSIPPI RIVER FROM NEW BOSTON LD17 DOWNSTREAM...THERE IS MORE
UNCERTAINTY THAN NORMAL REGARDING THE RIVER FORECASTS. THIS
UNCERTAINTY IS DUE TO THE EFFECTS OF LEVEE FAILURES. WE WILL
CONTINUE MONITORING THE SITUATION IN THOSE AREAS AND UPDATE THE
RIVER FORECASTS AS NEEDED.   ..JAZ..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
IL...NONE.
MO...NONE.

&&

HAASE/NICHOLS/JAZ

Hazardous weather outlook, Jun 15, 5:36 AM CDT, 10 hours 45 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
536 AM CDT SUN JUN 15 2008

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-161000-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
436 AM CDT SAT JUN 14 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST CENTRAL
IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST MISSOURI.

.DAY ONE...TODAY AND TONIGHT

THE STORM PREDICTION CENTER IS FORECASTING A SLIGHT RISK FOR SEVERE
THUNDERSTORMS NORTH OF HIGHWAY 30 TODAY...AND A MODERATE RISK SOUTH
OF HIGHWAY 30 IN IOWA...ILLINOIS...AND MISSOURI. THE MAIN THREATS
WILL BE DAMAGING WINDS AND LARGE HAIL. A COMPLEX OF STORMS WILL
QUICKLY EXIT THE AREA EARLY THIS MORNING...THEN ANOTHER ROUND IS
EXPECTED TO DEVELOP IN THE AFTERNOON AND EVENING HOURS.  THESE
STORMS WILL SWEEP SOUTHEAST OF THE OUTLOOK AREA BY LATE EVENING.

IN ADDITION TO SEVERE STORMS...FLASH FLOODING FROM HEAVY RAIN AND
LEVEE FAILURES IS THE MAIN THREAT ALONG AND SOUTH OF INTERSTATE 80.
LEVEES ALONG THE CEDAR...IOWA...AND MISSISSIPPI RIVERS ARE
THREATENED.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MAJOR TO RECORD FLOODING WILL CONTINUE ON THE MISSISSIPPI RIVER AND
MOST TRIBUTARY RIVERS. DETAILED INFORMATION CAN BE FOUND IN THE
LATEST FLOOD STATEMENT PRODUCT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE TODAY ACROSS THE ENTIRE OUTLOOK AREA.

ERVIN

In the hours before

Local storm report, Jun 15, 2:56 PM CDT, 1 hour 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
256 PM CDT SUN JUN 15 2008

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

0243 PM     HAIL             5 WNW PERU              41.37N 89.22W
06/15/2008  E1.75 INCH       BUREAU             IL   TRAINED SPOTTER

            MILE MARKER 70 ON I-80. SPRING VALLEY EXIT.

&&

Local storm report, Jun 15, 3:02 PM CDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
302 PM CDT SUN JUN 15 2008

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

0150 PM     TSTM WND DMG     CARTHAGE                40.41N 91.14W
06/15/2008                   HANCOCK            IL   TRAINED SPOTTER

            NUMEROUS LARGE TREES DOWN ACROSS THE CITY SOME UPROOTED.
            POWER OUT IN TOWN. DELAYED REPORT.

&&

JH2

Local storm report, Jun 15, 3:10 PM CDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
310 PM CDT SUN JUN 15 2008

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

0230 PM     TSTM WND DMG     BUSHNELL                40.55N 90.50W
06/15/2008                   MCDONOUGH          IL   EMERGENCY MNGR

            MANY TREES DOWN - TIME ESTIMATED.

&&

15

Local storm report, Jun 15, 3:16 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
316 PM CDT SUN JUN 15 2008

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

0152 PM     HAIL             2 SSE WOODVALE          41.00N 90.64W
06/15/2008  E0.25 INCH       WARREN             IL   TRAINED SPOTTER

            AND GUSTY WINDS TO 40 MPH.

&&

LE/HAASE

Local storm report, Jun 15, 3:17 PM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
317 PM CDT SUN JUN 15 2008

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

0155 PM     TSTM WND DMG     CARTHAGE                40.41N 91.14W
06/15/2008                   HANCOCK            IL   FIRE DEPT/RESCUE

            ACROSS THE CITY MANY LARGE HEALTHY TREES 3 TO 4 FEET IN
            DIAMETER DOWNED BY WIND. TALL PINE TREE SNAPPED OFF ABOUT
            5 FEET ABOVE THE GROUND.

&&

15

Local storm report, Jun 15, 3:19 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
319 PM CDT SUN JUN 15 2008

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

0200 PM     HAIL             5 NE MONMOUTH           40.97N 90.59W
06/15/2008  E0.25 INCH       WARREN             IL   TRAINED SPOTTER

            40 MPH WIND GUSTS

&&

LE/HAASE

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 7:33 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Rock Island, Whiteside	42 min
Jun 15, 2:33 AM CDT	Flash Flood Watch	DVN	Hancock, Henderson, McDonough, Mercer, Rock Island, Warren	12 hr
Jun 15, 1:13 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	47 min
Jun 15, 1:27 PM CDT	Severe Thunderstorm Warning	DVN	Henderson, Warren	48 min
Jun 15, 1:50 PM CDT	Severe Thunderstorm Warning	DVN	Henderson, Warren	25 min
Jun 15, 1:59 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, McDonough	46 min
Jun 15, 2:10 PM CDT	Severe Thunderstorm Warning	DVN	Warren	30 min
Jun 15, 2:21 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	39 min
Jun 15, 4:42 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	30 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2008 Every severe thunderstorm warning in 2008

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.