Warning Vector

Heat Advisory

NWS St Louis MO ยท US

Updated
This event was updated at .

Details

Heat Advisory Remains In Effect Until 8 PM CDT Saturday

Event
Heat Advisory
Issued
Onset
Message expires
Expected end
Category
Meteorological
Urgency
Expected
Severity
Moderate
Certainty
Likely
Response
Execute

Description

What

Heat index values up to 106.

Where

Portions of south central and southwest Illinois and central, east central, and southeast Missouri.

When

Until 8 PM CDT Saturday.

Impacts

Hot temperatures and high humidity may cause heat illnesses.

Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668.

Affected areas

  • Bond County, IL
  • Clinton County, IL
  • Marion County, IL
  • Washington
  • Randolph County, IL
  • Madison
  • St. Clair County, IL
  • Monroe County, IL
  • Moniteau County, MO
  • Cole County, MO
  • Osage County, MO
  • Gasconade County, MO
  • Warren County, MO
  • St. Charles County, MO
  • Franklin County, MO
  • St. Louis
  • St. Louis City
  • Jefferson County, MO
  • Crawford County, MO
  • Washington
  • St. Francois County, MO
  • Ste. Genevieve County, MO
  • Iron County, MO
  • Madison
  • Reynolds County, MO

Public contact

Issuer
NWS St Louis MO

Message record

Received
Issue to receipt
~43s
CAP status
Actual
CAP message type
Update
Lifecycle
Updated
Source
NWWS-OI
Feed
NWWS
Recovered
No
CAP routing and identity
ULID
01M2RN8ESV5BJA7800D5FHEENT
Identifier
urn:oid:2.49.0.1.840.0.02723a0bc382da4b03865a3982466e2de580af2b.002.1
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.6019
WMO heading
XOUS53
WMO data type
CAP alert message XML (XO)
WMO geography
United States (US)
WMO bulletin number
53

References

Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Identifier
urn:oid:2.49.0.1.840.0.1382cb5a279f8b74020af5ffaa3c82f7467ab3b1.001.1
Sender
w-nws.webmaster@noaa.gov
Sent
Identifier
urn:oid:2.49.0.1.840.0.327474d7d69051ee18989fc7a661c16623bfeab0.001.1
Sender
w-nws.webmaster@noaa.gov
Sent

Event codes

NameValue
SAMENWS
NationalWeatherServiceHTY

Parameters

NameValue
AWIPSidentifierNPWLSX
WMOidentifierWWUS73 KLSX 172144
NWSheadlineHEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT SATURDAY
BLOCKCHANNELEAS
BLOCKCHANNELNWEM
VTEC/O.CON.KLSX.HT.Y.0012.000000T0000Z-260920T0100Z/
eventEndingTime2026-09-19T20:00:00-05:00
BLOCKCHANNELCMAS
expiredReferencesw-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.83c3c15b48faa08053db6943dad6c1ba75f79bc1.002.1,2026-09-16T11:29:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.fcdde70e7d8ed65e156ae9fb4bad5a91e6e498c3.001.1,2026-09-16T02:51:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.875cdbf9b5b58cfdbfe2e0a933cdff19d4d8d486.001.1,2026-09-15T11:53:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1382cb5a279f8b74020af5ffaa3c82f7467ab3b1.001.1,2026-09-15T01:44:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.327474d7d69051ee18989fc7a661c16623bfeab0.001.1,2026-09-14T11:30:00-05:00
Locations

Location data

  • Bond County, IL
  • Clinton County, IL
  • Marion County, IL
  • Washington
  • Randolph County, IL
  • Madison
  • St. Clair County, IL
  • Monroe County, IL
  • Moniteau County, MO
  • Cole County, MO
  • Osage County, MO
  • Gasconade County, MO
  • Warren County, MO
  • St. Charles County, MO
  • Franklin County, MO
  • St. Louis
  • St. Louis City
  • Jefferson County, MO
  • Crawford County, MO
  • Washington
  • St. Francois County, MO
  • Ste. Genevieve County, MO
  • Iron County, MO
  • Madison
  • Reynolds County, MO
NameValue
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