Alert archive / Illinois / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 52, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 1, 2019, 6:01 PM CDT for Cook County, Illinois. It was in force for 44 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 1, 2019, 6:01 PM CDT (23:01 UTC)
- Expired
- Jun 1, 2019, 6:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Cook County, IL
The radar
The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 23:04 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 |
|---|---|---|---|
| Jun 1, 6:16 PM CDT | HAIL 0.25 | 1 Ese Thornton, IL | RELAYED VIA AMATEUR RADIO. |
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 |
|---|---|---|---|
| Jun 1, 2:23 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.0 hours before the alert went out and 210 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
- 1021 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 1338 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:27 PM CDT | River Flood Warning | LOT | Iroquois | 62 hr |
| Jun 1, 6:42 AM CDT | Special Weather Statement | LOT | Lake | 33 min |
| Jun 1, 7:15 AM CDT | Special Weather Statement | LOT | Lake | 45 min |
| Jun 1, 7:58 AM CDT | Special Weather Statement | LOT | Winnebago | 32 min |
| Jun 1, 8:24 AM CDT | Special Weather Statement | LOT | Lake | 36 min |
| Jun 1, 8:34 AM CDT | Special Weather Statement | LOT | Lake | 26 min |
| Jun 1, 3:27 PM CDT | Special Weather Statement | LOT | Cook | 48 min |
| Jun 1, 3:33 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 42 min |
| Jun 1, 3:34 PM CDT | Special Marine Warning | LOT | 56 min | |
| Jun 1, 3:53 PM CDT | Special Weather Statement | LOT | Cook | 52 min |
| Jun 1, 4:14 PM CDT | Special Weather Statement | LOT | McHenry | 46 min |
| Jun 1, 4:24 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 55 min |
| Jun 1, 4:29 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 1, 5:12 PM CDT | Special Weather Statement | LOT | Cook | 33 min |
| Jun 1, 5:23 PM CDT | Special Marine Warning | LOT | 82 min | |
| Jun 1, 5:47 PM CDT | Special Weather Statement | LOT | Will | 43 min |
| Jun 1, 5:50 PM CDT | Special Weather Statement | LOT | Cook | 25 min |
| Jun 1, 6:40 PM CDT | Special Marine Warning | LOT | 109 min | |
| Jun 1, 6:49 PM CDT | Areal Flood Advisory | LOT | Cook | 3 hr |
| Jun 1, 6:50 PM CDT | Special Weather Statement | LOT | Jasper, Newton | 55 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2019Every severe thunderstorm warning in 2019
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.