Severe Thunderstorm Warning
NWS St Louis MO ยท US
Details
Severe Thunderstorm Warning Issued September 20 At 10:47PM CDT Until September 20 At 11:30PM CDT By NWS St Louis MO
- Event
- Severe Thunderstorm Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Observed
- Response
- Shelter
Description
Overview
SVRLSX The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Northwestern Monroe County in southwestern Illinois... Northeastern Jefferson County in east central Missouri... * Until 1130 PM CDT. * At 1047 PM CDT, a severe thunderstorm was located over Horine, or over Pevely, moving east at 20 mph.
Hazard
60 mph wind gusts and quarter size hail.
Source
Radar indicated.
Impacts
Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.
Locations impacted
Festus, Antonia, Horine, Crystal City, Pevely, Herculaneum, Barnhart, Imperial, Harrisonville, Kimmswick, Valmeyer, Monroe City, Fountain, Madonnaville, Maeystown, Foster Pond, Waterloo and Columbia. This includes the following State Parks... Illinois Caverns State Natural Area, Mastodon Historic Site and Gov. Dunklin's Grave Historic Site. This includes Interstate 55 in Missouri between exits 175 and 187.
Instructions
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.
Affected areas
- Monroe County, IL
- Jefferson County, MO
Public contact
- Issuer
- NWS St Louis MO
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~1m9s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M31183EZAHCXMVD49VZCDZ9A
- Identifier
- urn:oid:2.49.0.1.840.0.92f7d8061370eb8a03c2f78ab9268974ec1fa3a9.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS St Louis MO
- AWIPS ID
- CAPLSX
- NWWS sequence
- nwws_processor.5536
- WMO heading
- XOUS53
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 53
Event codes
| Name | Value |
|---|---|
| SAME | SVR |
| NationalWeatherService | SVW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | SVRLSX |
| WMOidentifier | WUUS53 KLSX 210347 |
| eventMotionDescription | 2026-09-21T03:47:00-00:00...storm...257DEG...15KT...38.3,-90.44 |
| windThreat | RADAR INDICATED |
| maxWindGust | 60 MPH |
| hailThreat | RADAR INDICATED |
| maxHailSize | 1.00 |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.NEW.KLSX.SV.W.0258.260921T0347Z-260921T0430Z/ |
| eventEndingTime | 2026-09-20T23:30:00-05:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Monroe County, IL
- Jefferson County, MO
| Name | Value |
|---|---|
| SAME | 017133 |
| SAME | 029099 |
| UGC | ILC133 |
| UGC | MOC099 |
- Polygons
- 38.2,-90.48 38.36,-90.5 38.41,-90.35 38.4,-90.34 38.39,-90.34 38.4,-90.32 38.42,-90.3 38.46,-90.18 38.45,-90.18 38.21,-90.11 38.2,-90.48