Alert archive / Illinois / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 99, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 9, 2018, 12:49 PM CDT for Calhoun County, Greene County, Jersey 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 9, 2018, 12:49 PM CDT (17:49 UTC)
- Expired
- Jun 9, 2018, 1:13 PM CDT
- In force
- 24 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Greene County, IL, Jersey County, IL
The radar
The St Louis radar (KLSX), 50 km from the middle of the area, began a volume at 17:51 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 5.8 hours before the alert went out and 197 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
- 1519 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
983
WUUS53 KLSX 091749
SVRLSX
ILC013-061-083-091845-
/O.NEW.KLSX.SV.W.0099.180609T1749Z-180609T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1249 PM CDT SAT JUN 9 2018
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Central Calhoun County in southwestern Illinois...
Southwestern Greene County in southwestern Illinois...
Southwestern Jersey County in southwestern Illinois...
* Until 145 PM CDT.
* At 1248 PM CDT, a severe thunderstorm was located near Hardin,
moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Hardin, Grafton, Old Kane, Kane, Fieldon, Batchtown, Otterville and
Nutwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3919 9033 3896 9040 3902 9068 3924 9060
TIME...MOT...LOC 1748Z 282DEG 10KT 3912 9056
HAIL...1.00IN
WIND...60MPH
$$
Kanofsky1 follow-up statement
600
WWUS53 KLSX 091813
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
113 PM CDT SAT JUN 9 2018
ILC013-061-083-091823-
/O.CAN.KLSX.SV.W.0099.000000T0000Z-180609T1845Z/
Calhoun IL-Greene IL-Jersey IL-
113 PM CDT SAT JUN 9 2018
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CALHOUN...SOUTHWESTERN
GREENE AND SOUTHWESTERN JERSEY COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 3919 9033 3896 9040 3902 9068 3924 9060
TIME...MOT...LOC 1812Z 282DEG 10KT 3911 9047
$$
KanofskyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 9:06 AM CDT | Special Weather Statement | LSX | Macoupin | 24 min |
| Jun 9, 9:20 AM CDT | Special Weather Statement | LSX | Monroe | 40 min |
| Jun 9, 9:28 AM CDT | Special Weather Statement | LSX | Macoupin | 47 min |
| Jun 9, 10:51 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 39 min |
| Jun 9, 10:59 AM CDT | Special Weather Statement | LSX | Jersey | 61 min |
| Jun 9, 11:25 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 42 min |
| Jun 9, 11:34 AM CDT | Special Weather Statement | LSX | Fayette | 56 min |
| Jun 9, 11:36 AM CDT | Special Weather Statement | LSX | Brown | 24 min |
| Jun 9, 11:52 AM CDT | Special Weather Statement | LSX | Madison | 53 min |
| Jun 9, 12:15 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 45 min |
| Jun 9, 12:33 PM CDT | Special Weather Statement | LSX | Pike | 57 min |
| Jun 9, 12:42 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 30 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2018Every severe thunderstorm warning in 2018
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.