Alert archive / Missouri / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 5, NWS St. Louis, MO

January 21, 1999Lincoln County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jan 21, 1999, 11:43 AM CST for Lincoln County, Missouri. It was in force for 47 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: Jan 21, 1999, 11:43 AM CST (17:43 UTC)
Expired: Jan 21, 1999, 12:30 PM CST
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Lincoln County, MO

What was reported inside it

Time	Report	Where	Remark
Jan 21, 11:50 AM CST	Hail 1	Silex, MO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.7 hours before the alert went out and 236 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 211741 RRA
SVRSTL
MOC113-211830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1143 AM CST THU JAN 21 1999

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LINCOLN COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 1230 PM CST

* AT 1140 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM SOUTHWEST LINCOLN COUNTY NEAR THE TOWN OF
  HAWK POINT... MOVING NORTHEAST AT 35 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  DAVIS AT 1150 AM CST
  NEW HOPE AT 1155 AM CST

MAIN SEVERE WEATHER THREAT WILL BE LARGE HAIL.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60
MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.

RP/DB

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jan 21, 6:55 AM CST, 4 hours 48 minutes before

ILZ058-059-095>102-MOZ009-010-018-019-026-027-034>036-041-042-
047>052-059>065-072-073-211730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
655 AM CST THU JAN 21 1999

...A NEW WINTER STORM WILL CAUSE SIGNIFICANT CHANGES OVER EASTERN
MISSOURI AND WEST CDNTRAL INTO SOUTHWEST ILLINOIS FRIDAY NIGHT INTO
SATURDAY...

AN INTENSE STORM SYSTEM WILL DEVELOP OVER OKLAHOMA TODAY...THEN
DEEPEN QUICKLY AS IT MOVES FROM CENTRAL ARKANSAS NORTHEAST INTO
CENTRAL ILLINOIS BY EARLY SATURDAY MORNING.

WEATHER CONDITIONS WILL BE QUITE VARIABLE FROM THIS STORM...FIRST
A STEADY RAIN THURSDAY NIGHT AND FRIDAY WITH EMBEDDED
THUNDERSTORMS. THEN...AS THE STORM LIFTS BY TO THE EAST...
COLDER AIR WILL CAUSE THE RAIN TO CHANGE TO SNOW FROM THE
WEST FRIDAY NIGHT AND EARLY SATURDAY.

TEMPERATURES WILL FALL BELOW FREEZING LATE FRIDAY NIGHT AND EARLY
SATURDAY AND RAIN SLICKED SURFACES COULD FREEZE CREATING ICY
AND VERY HAZARDOUS TRAVEL AND WALKING CONDITIONS. IN ADDITION...
THE RAIN WILL GRADUALLY CHANGE TO SNOW FROM WEST TO EAST.
SIGNIFICANT ACCUMULATIONS OF SNOW WILL BE POSSIBLE BY SATURDAY
MORNING. MOST LIKELY AREA FOR SNOW WILL BE ALONG AND 60 MILES EITHER
SIDE OF A LINE FROM 50 MILES SOUTHWEST OF ST LOUIS TO QUINCY
ILLINOIS.

ONCE THE SNOW BEGINS...IF TRAVEL IS NECESSARY...MOTORISTS SHOULD BE
PREPARED FOR SEVERE WINTER WEATHER CONDITIONS. DRESS WARMLY AND MAKE
SURE YOUR CAR IS IN GOOD RUNNING CONDITION. BE SURE THAT YOUR CAR IS
WINTERIZED AND THAT BRAKES...LIGHTS...BATTERY...EXHAUST...HEATER
CONNECTIONS...DEFROSTER...AND WINDSHIELD WIPERS ARE IN GOOD WORKING
ORDER.

STAY TUNED TO NOAA WEATHER RADIO...OR THE COMMERCIAL MEDIA FOR
LATER STATEMENTS CONCERNING THIS DANGEROUS WINTER WEATHER SITUATION.

PEDIGO

Special weather statement, Jan 21, 9:50 AM CST, 1 hour 53 minutes before

MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047-
051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095-
064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074-
MOZ065-221200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
950 AM CST THU JAN 21 1999

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE
IN ST. LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND
EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT
ACROSS SOUTHERN SECTIONS OF THE COUNTY WARNING AREA...GENERALLY
SOUTH OF A LINE FROM JEFFERSON CITY TO BELLEVILLE.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF
THE LATEST FORECASTS...AND MONITOR LATER WEATHER INFORMATION FOR
POSSIBLE SKYWARN ACTION.

GKS

Special weather statement, Jan 21, 10:16 AM CST, 1 hour 27 minutes before

MOZ063-211635-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1016 AM CST THU JAN 21 1999

...TEST....TEST....TEST....

Special weather statement, Jan 21, 10:17 AM CST, 1 hour 26 minutes before

MOZ062-211635-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1017 AM CST THU JAN 21 1999

TEST...TEST....TEST...THIS IS A TEST//

RP

Special weather statement, Jan 21, 10:25 AM CST, 1 hour 18 minutes before

MOZ062-211645-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1025 AM CST THU JAN 21 1999

THIS IS A TEST.....THIS IS A TEST....THIS IS A TEST...

THIS IS ONLY A TEST...

RP

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 21, 9:56 AM CST	Severe Thunderstorm Warning	LSX	Osage	49 min
Jan 21, 10:13 AM CST	Severe Thunderstorm Warning	LSX	Gasconade	47 min
Jan 21, 10:39 AM CST	Severe Thunderstorm Warning	LSX	Moniteau	46 min
Jan 21, 11:04 AM CST	Severe Thunderstorm Warning	LSX	Montgomery	46 min
Jan 21, 11:45 AM CST	Severe Thunderstorm Warning	LSX	Boone	45 min
Jan 21, 12:01 PM CST	Severe Thunderstorm Warning	LSX	Audrain, Monroe	49 min
Jan 21, 12:51 PM CST	Severe Thunderstorm Warning	LSX	Audrain, Boone	34 min
Jan 21, 1:04 PM CST	Severe Thunderstorm Warning	LSX	Monroe	46 min
Jan 21, 1:11 PM CST	Severe Thunderstorm Warning	LSX	Madison, Saint Francois	49 min
Jan 21, 5:41 PM CST	Severe Thunderstorm Warning	LSX	Madison	49 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.