Alert archive / Missouri / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 121, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 14, 2017, 8:18 PM CDT for Pike County, Ralls County, Missouri; Pike County, Illinois. It was in force for 42 min. 1 report 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
- Jun 14, 2017, 8:18 PM CDT (01:18 UTC)
- Expired
- Jun 14, 2017, 9:00 PM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Pike County, IL, Pike County, MO, Ralls County, MO
The radar
The St Louis radar (KLSX), 107 km from the middle of the area, began a volume at 01:19 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 14, 8:20 PM CDT | HAIL 1 | Center, MO |
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 14, 1:04 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 248 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
- 2336 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1021 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.4
The text
As transmitted.
763 WUUS53 KLSX 150118 SVRLSX ILC149-MOC163-173-150200- /O.NEW.KLSX.SV.W.0121.170615T0118Z-170615T0200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service St Louis MO 818 PM CDT WED JUN 14 2017 The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Western Pike County in west central Illinois... Ralls County in northeastern Missouri... Northwestern Pike County in northeastern Missouri... * Until 900 PM CDT. * At 817 PM CDT, a severe thunderstorm was located over Center, moving east at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Louisiana, Barry, New London, Center, Frankford, Pike, Spaulding, Spencerburg, Hull, New Canton, Kinderhook, Saverton, Ilasco, Rockport and Ashburn. This includes Interstate 72 near exit 20. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3938 9164 3960 9166 3975 9101 3936 9099 TIME...MOT...LOC 0117Z 262DEG 24KT 3951 9154 HAIL...1.00IN WIND...<50MPH $$ GKS
1 follow-up statement
524
WWUS53 KLSX 150159
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
859 PM CDT WED JUN 14 2017
ILC149-MOC163-173-150208-
/O.EXP.KLSX.SV.W.0121.000000T0000Z-170615T0200Z/
Pike IL-Ralls MO-Pike MO-
859 PM CDT WED JUN 14 2017
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PIKE COUNTY IN WEST
CENTRAL ILLINOIS...RALLS AND NORTHWESTERN PIKE COUNTIES IN
NORTHEASTERN MISSOURI WILL EXPIRE AT 900 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire. However small hail,
gusty winds and heavy rain are still possible with this thunderstorm.
A severe thunderstorm watch remains in effect until 1000 PM CDT for
west central Illinois...and northeastern Missouri.
LAT...LON 3938 9164 3960 9166 3975 9101 3936 9099
TIME...MOT...LOC 0158Z 262DEG 24KT 3954 9123
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 7:15 PM CDT | Areal Flood Advisory | LSX | Marion, Pike, Ralls | 3 hr |
| Jun 14, 8:10 PM CDT | Special Weather Statement | LSX | Ralls | 50 min |
| Jun 14, 9:11 PM CDT | Special Weather Statement | LSX | Pike, Ralls | 49 min |
| Jun 15, 12:17 AM CDT | River Flood Warning | LSX | Marion | 32 hr |
| Jun 15, 12:26 AM CDT | Flash Flood Warning | LSX | Marion, Shelby | 8 hr |
| Jun 15, 12:32 AM CDT | Flash Flood Warning | LSX | Monroe, Pike, Ralls | 8 hr |
| Jun 14, 7:14 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 29 min |
| Jun 14, 7:38 PM CDT | Special Weather Statement | LSX | Calhoun, Greene | 52 min |
| Jun 14, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin | 42 min |
| Jun 14, 8:24 PM CDT | Special Weather Statement | LSX | Montgomery | 51 min |
| Jun 14, 8:45 PM CDT | Special Weather Statement | LSX | Bond, Montgomery | 45 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2017Severe Thunderstorm Warnings in Illinois, 2017Every severe thunderstorm warning in 2017
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.