Alert archive / Illinois / Tornado Warnings in 2009

Tornado Warning 13, NWS Quad Cities, IA

June 19, 2009Henderson County, Warren County, Illinois

NWS Quad Cities, IA issued this tornado warning at Jun 19, 2009, 4:37 PM CDT for Henderson County, Warren County, Illinois. It was in force for 17 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 19, 2009, 4:37 PM CDT (21:37 UTC)
Expired: Jun 19, 2009, 4:54 PM CDT
In force: 17 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon

Counties Henderson County, IL, Warren County, IL

The radar

The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 21:39 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.

Issued	Product	Office	Lasted
Jun 19, 2:24 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.6 hours before the alert went out and 94 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: 2575 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 10.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDVN 192137
TORDVN
ILC071-187-192230-
/O.NEW.KDVN.TO.W.0013.090619T2137Z-090619T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
437 PM CDT FRI JUN 19 2009

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN HENDERSON COUNTY IN WEST CENTRAL ILLINOIS...
  WARREN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 530 PM CDT.

* AT 435 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR SMITHSHIRE...OR 12 MILES SOUTHWEST OF MONMOUTH...
  MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  PONEMAH...KIRKWOOD AND ROSEVILLE AROUND 445 PM CDT...
  LARCHLAND AROUND 450 PM CDT...
  ORMONDE...NEMO...MONMOUTH AND MONMOUTH MUNICIPAL AIRPORT AROUND 455
  PM CDT...
  PHELPS AND BERWICK AROUND 500 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND
NORTHEAST MISSOURI.

&&

LAT...LON 4083 9095 4103 9044 4075 9044 4065 9077
      4064 9084
TIME...MOT...LOC 2138Z 245DEG 30KT 4079 9077

$$

HAASE

1 follow-up statement

000 
WWUS53 KDVN 192154
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
454 PM CDT FRI JUN 19 2009

ILC071-187-192204-
/O.CAN.KDVN.TO.W.0013.000000T0000Z-090619T2230Z/
WARREN IL-HENDERSON IL-
454 PM CDT FRI JUN 19 2009

...THE TORNADO WARNING FOR SOUTHEASTERN HENDERSON AND WARREN COUNTIES
IS CANCELLED...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND
NORTHEAST MISSOURI.

LAT...LON 4083 9095 4103 9044 4075 9044 4065 9077
      4064 9084
TIME...MOT...LOC 2154Z 245DEG 30KT 4084 9061

$$

HAASE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 1:48 AM CDT	Special Weather Statement	DVN	Stephenson	57 min
Jun 19, 8:17 AM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess	58 min
Jun 19, 9:02 AM CDT	Severe Thunderstorm Warning	DVN	Carroll, Jo Daviess, Stephenson	58 min
Jun 19, 4:00 PM CDT	Tornado Warning	DVN	Henderson, Warren	45 min
Jun 19, 4:10 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, McDonough	41 min
Jun 19, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Hancock, Henderson, Henry, McDonough, Mercer, Warren	72 min
Jun 19, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Rock Island	57 min
Jun 19, 5:09 PM CDT	Flash Flood Warning	DVN	Carroll, Jo Daviess, Stephenson	3 hr
Jun 19, 5:12 PM CDT	Flash Flood Warning	DVN	Mercer, Rock Island	91 min
Jun 19, 5:28 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Henry, Rock Island, Whiteside	62 min
Jun 19, 5:39 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry, Putnam	66 min
Jun 19, 6:07 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Whiteside	38 min

Nearby

Tornado Warnings in Illinois, 2009 Every tornado warning in 2009 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.