Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 4, NWS Quad Cities, IA

April 10, 20084 counties in Illinois

NWS Quad Cities, IA issued this tornado warning at Apr 10, 2008, 5:47 PM CDT for 4 counties in Illinois. It was in force for 43 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 10, 2008, 5:47 PM CDT (22:47 UTC)
Expired: Apr 10, 2008, 6:30 PM CDT
In force: 43 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon

Counties Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL

The radar

The Quad Cities radar (KDVN), 152 km from the middle of the area, began a volume at 22:51 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.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 6:00 PM CDT	TORNADO	2 Nw Lima, IL	TORNADO REPORTED ON THE GROUND BY A TRAINED SPOTTER
Apr 10, 6:30 PM CDT	TORNADO 1	2 E Sutter, IL	TIME IS APPROXIMATE. INTENSITY RATING WAS EF-1. ESTIMATED WINDS WERE 93 MPH. PATH WIDTH WAS 150 YARDS WIDE. PATH LENGTH WAS 1.6 MI. DAMAGE TO A ROOF AND TREE AT A CHURCH. GARAGE DESTROYED...AND DAMAGE TO OUT BUILDINGS...ON A FARM. BARN SHIFTED OFF ITS FOUNDATI
Apr 10, 6:33 PM CDT	TORNADO 0	4 W Basco, IL	TIME IS APPROXIMATE. INTENSITY RATING WAS EF-0. ESTIMATED WINDS WERE 79 MPH. PATH WIDTH WAS 50 YARDS WIDE. PATH LENGTH WAS 0.2 MI. DAMAGE TO A ROOF AND TREE AT A HOUSE.
Apr 10, 6:35 PM CDT	TORNADO 0	5 Wsw Carthage, IL	TIME IS APPROXIMATE. INTENSITY RATING WAS EF-0. ESTIMATED WINDS WERE 85 MPH. PATH WIDTH WAS 75 YARDS WIDE. PATH LENGTH WAS 3/4 MI. DAMAGE TO A ROOF...GARAGE DOOR AND TREE AT A HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jan 7, 1:52 PM CST	Tornado Watch	SPC	146 days
Apr 10, 4:55 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.8 hours before the alert went out and 155 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 419 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.

000 
WFUS53 KDVN 102249
TORDVN
ILC067-071-109-187-102330-
/O.NEW.KDVN.TO.W.0004.080410T2247Z-080410T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
547 PM CDT THU APR 10 2008

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  HANCOCK COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN HENDERSON COUNTY IN WEST CENTRAL ILLINOIS...
  NORTHWESTERN MCDONOUGH COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN WARREN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 630 PM CDT.

* AT 546 PM CDT...DOPPLER RADAR AND TRAINED SPOTTERS REPORTED A 
TORNADO 18 MILES SOUTHWEST OF WEST POINT...OR NEAR CANTON...MOVING 
NORTHEAST AT 66 MPH.

* THE TORNADO WILL BE NEAR...
  WEST POINT AROUND 600 PM CDT...
  CARTHAGE AROUND 610 PM CDT...
  BURNSIDE AND 6 MILES SOUTHEAST OF FERRIS AROUND 615 PM CDT...
  BLANDINSVILLE...LA HARPE AND 7 MILES SOUTHEAST OF DISCO AROUND 625
  PM CDT...
  RARITAN...6 MILES NORTHWEST OF SCIOTA AND 8 MILES SOUTHEAST OF
  TERRE HAUTE AROUND 630 PM CDT...

THIS STORM IS ALSO CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF 
QUARTERS.

THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM
OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4020 9132 4019 9148 4020 9149 4081 9084
      4064 9060 4018 9117 4019 9131
TIME...MOT...LOC 2247Z 221DEG 58KT 4010 9144

$$

NICHOLS

2 follow-up statements

000 
WWUS53 KDVN 102321
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
621 PM CDT THU APR 10 2008

ILC067-102330-
/O.CON.KDVN.TO.W.0004.000000T0000Z-080410T2330Z/
HANCOCK IL-
621 PM CDT THU APR 10 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR HANCOCK
COUNTY...

AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED APPROXIMATELY NEAR
ELVASTON...OR NEAR CARTHAGE...MOVING NORTHEAST AT 59 MPH.

THE TORNADO WILL BE NEAR...
  7 MILES NORTHWEST OF WEBSTER AROUND 630 PM CDT...

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF 
PENNIES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4035 9133 4041 9127 4045 9122 4055 9113
      4060 9105 4055 9093 4028 9117
TIME...MOT...LOC 2321Z 212DEG 51KT 4041 9120

$$

NICHOLS

000 
WWUS53 KDVN 102330
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
630 PM CDT THU APR 10 2008

ILC067-102340-
/O.EXP.KDVN.TO.W.0004.000000T0000Z-080410T2330Z/
HANCOCK IL-
630 PM CDT THU APR 10 2008

...THE TORNADO WARNING FOR HANCOCK COUNTY EXPIRES AT 630 PM CDT...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
WEAKENED. THEREFORE THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4035 9133 4041 9127 4045 9122 4055 9113
      4060 9105 4055 9093 4028 9117
TIME...MOT...LOC 2321Z 212DEG 51KT 4041 9120

$$

NICHOLS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:48 AM CDT	River Flood Warning	DVN	Whiteside	7 days
Apr 10, 9:55 AM CDT	River Flood Warning	DVN	Henry, Rock Island	23 hr
Apr 10, 10:01 AM CDT	River Flood Warning	DVN	Hancock, McDonough	60 hr
Apr 10, 11:33 AM CDT	River Flood Warning	DVN	Henderson	43 days
Apr 10, 11:33 AM CDT	River Flood Warning	DVN	Hancock, Henderson	43 days
Apr 10, 12:07 PM CDT	Wind Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more	3 hr
Apr 10, 6:47 PM CDT	Tornado Warning	DVN	Hancock, Henderson, McDonough, Warren	30 min

Nearby

Tornado Warnings in Illinois, 2008 Every tornado warning in 2008 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.