Alert archive / Illinois / Tornado Warnings in 2009
Tornado Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Aug 19, 2009, 6:11 PM CDT for Iroquois County, Illinois; Newton County, Indiana. It was in force for 32 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
- Aug 19, 2009, 6:11 PM CDT (23:11 UTC)
- Expired
- Aug 19, 2009, 6:43 PM CDT
- In force
- 32 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
Counties Iroquois County, IL, Newton County, IN
The radar
The Chicago radar (KLOT), 89 km from the middle of the area, began a volume at 23:11 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 |
|---|---|---|---|
| Aug 19, 12:49 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.2 hours before the alert went out and 124 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.
- Mixed-layer CAPE
- 272 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLOT 192311 TORLOT ILC075-INC111-200000- /O.NEW.KLOT.TO.W.0013.090819T2311Z-090820T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 611 PM CDT WED AUG 19 2009 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN IROQUOIS COUNTY IN EAST CENTRAL ILLINOIS... SOUTHERN NEWTON COUNTY IN NORTHWEST INDIANA... * UNTIL 700 PM CDT... * AT 609 PM...NATIONAL WEATHER SERVICE RADAR INDICATED STRONG ROTATION IN A SEVERE THUNDERSTORM 12 MILES SOUTHWEST OF MOROCCO... MOVING NORTHEAST AT 20 MPH. AMATEUR RATIO REPORTED A FUNNEL CLOUD BETWEEN MARTINTON AND ST. ANNE. * THE TORNADO WILL BE NEAR... DONOVAN BY 620 PM... MOROCCO BY 640 PM... BEAVER CITY...AND 7 MILES NORTHWEST OF BROOK BY 645 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW IF NO BASEMENT IS AVAILABLE...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. && LAT...LON 4104 8747 4087 8732 4077 8767 4087 8775 TIME...MOT...LOC 2310Z 239DEG 19KT 4086 8765 $$ RODRIGUEZ/HALBACH
4 follow-up statements
000 WWUS53 KLOT 192315 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 615 PM CDT WED AUG 19 2009 ILC075-INC111-200000- /O.CON.KLOT.TO.W.0013.000000T0000Z-090820T0000Z/ IROQUOIS IL-NEWTON IN- 615 PM CDT WED AUG 19 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTHERN NEWTON AND NORTHEASTERN IROQUOIS COUNTIES... AT 615 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD BETWEEN MARTINTON AND ST. ANNE. THIS TORNADO WAS LOCATED NEAR DONOVAN...MOVING NORTHEAST AT 20 MPH. THE TORNADO WILL BE NEAR... MOROCCO BY 640 PM CDT... BEAVER CITY...AND 7 MILES NORTHWEST OF BROOK BY 645 PM CDT... ENOS BY 650 PM CDT... A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. LAT...LON 4104 8747 4087 8732 4077 8767 4087 8775 TIME...MOT...LOC 2315Z 239DEG 19KT 4087 8762 $$ RODRIGUEZ/HALBACH
000 WWUS53 KLOT 192331 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 631 PM CDT WED AUG 19 2009 ILC075-INC111-200000- /O.CON.KLOT.TO.W.0013.000000T0000Z-090820T0000Z/ IROQUOIS IL-NEWTON IN- 631 PM CDT WED AUG 19 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTHERN NEWTON AND NORTHEASTERN IROQUOIS COUNTIES... AT 630 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR MOROCCO...MOVING NORTHEAST AT 20 MPH. THE TORNADO WILL BE NEAR... MOROCCO...BEAVER CITY BY 645 PM CDT... ENOS BY 650 PM CDT... A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. LAT...LON 4082 8756 4093 8765 4104 8747 4087 8732 TIME...MOT...LOC 2331Z 239DEG 19KT 4091 8752 $$ RODRIGUEZ/HALBACH
000 WWUS53 KLOT 192339 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 639 PM CDT WED AUG 19 2009 ILC075-192348- /O.CAN.KLOT.TO.W.0013.000000T0000Z-090820T0000Z/ IROQUOIS IL- 639 PM CDT WED AUG 19 2009 ...THE TORNADO WARNING FOR NORTHEASTERN IROQUOIS COUNTY IS CANCELLED... THE STORM THAT HAD PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY. A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. LAT...LON 4086 8752 4097 8753 4104 8747 4087 8732 TIME...MOT...LOC 2338Z 239DEG 19KT 4093 8748 $$ INC111-200000- /O.CON.KLOT.TO.W.0013.000000T0000Z-090820T0000Z/ NEWTON IN- 639 PM CDT WED AUG 19 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL NEWTON COUNTY... AT 638 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR MOROCCO...MOVING NORTHEAST AT 20 MPH. THE TORNADO WILL BE NEAR... BEAVER CITY BY 645 PM CDT... ENOS BY 650 PM CDT... A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. LAT...LON 4086 8752 4097 8753 4104 8747 4087 8732 TIME...MOT...LOC 2338Z 239DEG 19KT 4093 8748 $$ RODRIGUEZ/HALBACH
000 WWUS53 KLOT 192343 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 643 PM CDT WED AUG 19 2009 INC111-192353- /O.CAN.KLOT.TO.W.0013.000000T0000Z-090820T0000Z/ NEWTON IN- 643 PM CDT WED AUG 19 2009 ...THE TORNADO WARNING FOR CENTRAL NEWTON COUNTY IS CANCELLED... THE ROTATION IN THE STORM HAS WEAKENED AND NO LONGER APPEARS TO POSE A TORNADO THREAT. A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA. LAT...LON 4086 8752 4097 8753 4104 8747 4087 8732 TIME...MOT...LOC 2343Z 239DEG 19KT 4094 8745 $$ RODRIGUEZ/HALBACH
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 3:31 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Livingston | 74 min |
| Aug 19, 4:01 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 55 min |
| Aug 19, 4:24 PM CDT | Small Craft Advisory | LOT | 29 hr | |
| Aug 19, 4:35 PM CDT | Tornado Warning | LOT | Grundy | 25 min |
| Aug 19, 4:37 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 2 more | 53 min |
| Aug 19, 4:49 PM CDT | Special Marine Warning | LOT | 116 min | |
| Aug 19, 5:08 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 57 min |
| Aug 19, 5:14 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kankakee, Will | 61 min |
| Aug 19, 5:19 PM CDT | Tornado Warning | LOT | Ford, Iroquois, Livingston | 29 min |
| Aug 19, 5:40 PM CDT | Areal Flood Advisory | LOT | Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 5 hr |
| Aug 19, 5:57 PM CDT | Tornado Warning | LOT | DeKalb, Kane | 33 min |
| Aug 19, 6:25 PM CDT | Special Marine Warning | LOT | 65 min |
Nearby
Tornado Warnings in Illinois, 2009Tornado Warnings in Indiana, 2009Every tornado warning in 2009Tornadoes 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.