Alert archive / Missouri / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 155, NWS St. Louis, MO

July 4, 1995Knox County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 4, 1995, 6:15 AM CDT for Knox County, Missouri. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1995, 6:15 AM CDT (11:15 UTC)
Expired
Jul 4, 1995, 7:00 AM CDT
In force
45 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Knox County, MO

The radar

The St Louis radar (KLSX), 203 km from the middle of the area, began a volume at 11:15 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

Davenport, (KDVN), launched 00:00Z, 11.3 hours before the alert went out and 216 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-pSkew-T log-p diagram, Davenport, at 00:00Z on 1995-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 822 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 1995-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
822 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1055 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
48 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 041119 RRA
SVRSTL
MOC103-041200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
615 AM CDT TUE JUL 4 1995
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST MISSOURI
 
   ...KNOX COUNTY
 
AT 615 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM FROM 2 MILES WEST OF GREENSBURG TO 3 MILES
WEST OF NOVELTY.  THIS STORM WAS MOVING TO NORTHEAST AROUND 40
MILES AN HOUR.
 
PERSONS IN GREENSBURG...BARING...EDINA...AND NOVELTY SHOULD BE
ALERT FOR THE POSSIBILITY OF STRONG DAMAGING WINDS.
 
THIS STORM HAS A H|ISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!

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, Jul 4, 2:40 AM CDT, 3 hours 35 minutes before
MOZ010-018-009-040830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
240 AM CDT TUE JUL 4 1995

...ONE ROUND OF THUNDERSTORMS LEAVING NORTHEAST MISSOURI WITH
ANOTHER ON THE WAY...

A STRONG THUNDERSTORM WILL CROSS THE MISSOURI IOWA BORDER BETWEEN
ATHENS AND REVERE BY 245 AM. HOWEVER MORE STRONG THUNDERSTORMS WILL BE
MOVING INTO KNOX AND SCOTLAND COUNTIES OVER THE NEXT HOUR.

AT 235 AM...NWS RADAR SHOWED STRONG THUNDERSTORMS STRETCHING FROM
KIRKSVILLE TO LA PLATA. THE STORMS WERE MOVING NORTHEAST AT 45 MPH.
NORTHWEST KNOX COUNTY...INCLUDING HURDLAND AND BARING CAN EXPECT
HEAVY RAIN...SMALL HAIL AND GUSTY WINDS BY 300 AM. THE STORMS WILL
MOVE INTO SCOTLAND COUNTY AND AFFECT MEMPHIS BY 315 PM.

THIS SECOND ROUND OF STORMS WILL LIKELY CAUSE SOME PONDING OF WATER ON
ROADS AND LOW LYING AREAS. PEOPLE SHOULD BE CAUTIOUS AND AVOID ANY
FLOODED AREAS.

JPK
Special weather statement, Jul 4, 2:42 AM CDT, 3 hours 33 minutes before
MOZ010-018-009-040830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
240 AM CDT TUE JUL 4 1995

...ONE ROUND OF THUNDERSTORMS LEAVING NORTHEAST MISSOURI WITH
ANOTHER ON THE WAY...

A STRONG THUNDERSTORM WILL CROSS THE MISSOURI IOWA BORDER BETWEEN
ATHENS AND REVERE BY 245 AM. HOWEVER MORE STRONG THUNDERSTORMS WILL BE
MOVING INTO KNOX AND SCOTLAND COUNTIES OVER THE NEXT HOUR.

AT 235 AM...NWS RADAR SHOWED STRONG THUNDERSTORMS STRETCHING FROM
KIRKSVILLE TO LA PLATA. THE STORMS WERE MOVING NORTHEAST AT 45 MPH.
NORTHWEST KNOX COUNTY...INCLUDING HURDLAND AND BARING CAN EXPECT
HEAVY RAIN...SMALL HAIL AND GUSTY WINDS BY 300 AM. THE STORMS WILL
MOVE INTO SCOTLAND COUNTY AND AFFECT MEMPHIS BY 315 PM.

THIS SECOND ROUND OF STORMS WILL LIKELY CAUSE SOME PONDING OF WATER ON
ROADS AND LOW LYING AREAS. PEOPLE SHOULD BE CAUTIOUS AND AVOID ANY
FLOODED AREAS.

JPK
Special weather statement, Jul 4, 3:38 AM CDT, 2 hours 37 minutes before
MOZ018-009-040930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
338 AM CDT TUE JUL 4 1995

...A STRONG THUNDERSTORM WILL MOVE FROM ADAIR ACROSS NORTHEAST KNOX
INTO SCOTLAND COUNTY...

AT 335 AM RADAR INDICATED A STRONG THUNDERSTORM OVER 5 MILES EAST OF
KIRKSVILLE MOVING NORTHEAST AT 35 MPH. THE STORM WILL CUT ACROSS EXTREME
NORTHWEST KNOX COUNTY...THEN INTO SCOTLAND COUNTY HITTING BIBLE GROVE BY
350 AM AND MEMPHIS BY 400 AM.

THIS STORM WILL PRODUCE VERY HEAVY RAIN...GUSTY WINDS AND SMALL HAIL.
SOME PONDING OF WATER IN LOW LYING AREAS AND LOCALIZED FLOODING OF SOME
ROADS IS ALSO EXPECTED.

JPK
Special weather statement, Jul 4, 3:39 AM CDT, 2 hours 36 minutes before
MOZ018-009-040930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
338 AM CDT TUE JUL 4 1995

...A STRONG THUNDERSTORM WILL MOVE FROM ADAIR ACROSS NORTHEAST KNOX
INTO SCOTLAND COUNTY...

AT 335 AM RADAR INDICATED A STRONG THUNDERSTORM OVER 5 MILES EAST OF
KIRKSVILLE MOVING NORTHEAST AT 35 MPH. THE STORM WILL CUT ACROSS EXTREME
NORTHWEST KNOX COUNTY...THEN INTO SCOTLAND COUNTY HITTING BIBLE GROVE BY
350 AM AND MEMPHIS BY 400 AM.:

THIS STORM WILL PRODUCE VERY HEAVY RAIN...GUSTY WINDS AND SMALL HAIL.
SOME PONDING OF WATER IN LOW LYING AREAS AND LOCALIZED FLOODING OF SOME
ROADS IS ALSO EXPECTED.

JPK
Special weather statement, Jul 4, 4:47 AM CDT, 1 hour 28 minutes before
MOZ010-018-019-027-034-009-026-041045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
447 AM CDT TUE JUL 4 1995

...STRONG THUNDERSTORMS CONTINUE ACROSS SCOTLAND AND CLARK COUNTIES...

AT 445 AM...NWS RADAR INDICATED STRONG THUNDERSTORMS SCATTERED ACROSS
SCOTLAND AND CLARK COUNTIES. THE STORMS WERE MOVING NORTHEAST AT 30 MPH.
THE STRONG STORMS HAVE BECOME MORE SCATTERED IN NATURE AND HAVE
DECREASED IN INTENSITY OVER THE PAST HOUR.

THUS FAR...NO DAMAGE OR FLOODING HAS BEEN REPORTED BY THE STORMS.
HOWEVER...WITH SCATTERED STORMS STRETCHING SOUTHWEST TO THE
KANSAS CITY AREA...MORE HEAVY RAIN WILL AFFECT NORTHEAST MISSOURI BEFORE
THE MORNING IS OVER. THUS A FLASH FLOOD WATCH WILL REMAIN IN EFFECT FOR
THE REST OF THE MORNING.

A TORNADO WATCH ALSO CONTINUES FOR THE AREA UNTIL 900 AM. SOME STORMS
MAY YET INTENSIFY THIS MORNING AND BECOME SEVERE. PEOPLE IN NORTHEAST
MISSOURI ARE ADVISED TO KEEP ALERT TO WEATHER CONDITIONS THROUGHOUT THE
MORNING HOURS.

JPK
Special weather statement, Jul 4, 4:49 AM CDT, 1 hour 26 minutes before
MOZ010-018-019-027-034-009-026-041045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
447 AM CDT TUE JUL 4 1995

...STRONG THUNDERSTORMS CONTINUE ACROSS SCOTLAND AND CLARK COUNTIES...

AT 445 AM...NWS RADAR INDICATED STRONG THUNDERSTORMS SCATTERED ACROSS
SCOTLAND AND CLARK COUNTIES. THE STORMS WERE MOVING NORTHEAST AT 30 MPH.
THE STRONG STORMS HAVE BECOME MORE SCATTERED IN NATURE AND HAVE
DECREASED IN INTENSITY OVER THE PAST HOUR.

THUS FAR...NO DAMAGE OR FLOODING HAS BEEN REPORTED BY THE STORMS.
HOWEVER...WITH SCATTERED STORMS STRETCHING SOUTHWEST TO THE
KANSAS CITY AREA...MORE HEAVY RAIN WILL AFFECT NORTHEAST MISSOURI BEFORE
THE MORNING IS OVER. THUS A FLASH FLOOD WATCH WILL REMAIN IN EFFECT FOR
THE REST OF THE MORNING.

A TORNADO WATCH ALSO CONTINUES FOR THE AREA UNTIL 900 AM. SOME STORMS
MAY YET INTENSIFY THIS MORNING AND BECOME SEVERE. PEOPLE IN NORTHEAST
MISSOURI ARE ADVISED TO KEEP ALERT TO WEATHER CONDI*TIONS THROUGHOUT THE
MORNING HOURS.

JPK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 2:35 PM CDTSevere Thunderstorm WarningLSXFranklin, Washington40 min
Jul 4, 3:10 PM CDTSevere Thunderstorm WarningLSXJefferson41 min
Jul 4, 3:10 PM CDTSevere Thunderstorm WarningLSXSaint Louis50 min
Jul 4, 3:13 PM CDTSevere Thunderstorm WarningLSXFranklin38 min
Jul 4, 3:45 PM CDTSevere Thunderstorm WarningLSXCity of Saint Louis38 min
Jul 4, 6:58 PM CDTTornado WarningLSXMonroe27 min
Jul 4, 6:58 PM CDTTornado WarningLSXShelby47 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1995Every severe thunderstorm warning in 1995

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.