Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 14, NWS St. Louis, MO

April 3, 2001Crawford County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 3, 2001, 1:35 PM CDT for Crawford County, Missouri. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Apr 3, 2001, 1:35 PM CDT (18:35 UTC)
Expired: Apr 3, 2001, 2:15 PM CDT
In force: 40 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Crawford County, MO

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 18:37 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

Springfield, MO (KSGF), launched 12:00Z, 6.6 hours before the alert went out and 252 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: 1171 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 031837
SVRSTL

MOC055-031915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
135 PM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 215 PM CDT

* AT 135 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF CUBA...MOVING EAST AT 45 MPH.

* LOCATIONS IN THE PATH...
  CUBA
  STEELVILLE
  LEASBURG

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE
SERIOUS INJURY AND EXTENSIVE PROPERTY DAMAGE. TAKE SHELTER INSIDE OF
A STURDY BUILDING NOW!

LAT...LON 3780 9111 3786 9152 3817 9154 3815 9110

CARNEY/PRZYBYLINSKI

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.

NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 3, 3:15 AM CDT, 10 hours 20 minutes earlier.

Area forecast discussion, Apr 3, 3:15 AM CDT, 10 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
315 AM CDT TUE APR 3 2001

FORECAST CHALLENGE IS TIMING OF SHRA/TSRA THE NEXT FEW DAYS.
REGIONAL RADARS SHOWING SHRA/FEW TSRA CONTINUING TO FORM OVER WRN
MO/ERN KS AND MOVING EAST.  PRECIP IS A RESULT OF 850-700 MB THETAE
ADVECTION/MOISTURE CONVERGENCE WHICH WILL GRADUALLY DIMINISH BY MID
MORNING AS LOW LEVEL JET DIMINISHES...SO WILL SHOW A ENDING TREND
IN ZONES.  REDEVLOPMENT THIS AFTN WILL BE LIMITED TO OVER THE SRN
ZONES NEAR TO QSTNRY FRONT WHERE MESOETA HAS LI/S TO -2 AND LIMITED
CAP.

MODEL MASS FIELDS APPEAR SIMILAR IN BUILDING UPR RIDGE OVER CNTRL
U.S. IN RESPONSE TO DIGGING WRN U.S. TROF.  SFC HIGH OVER CENTRAL
CANADA WILL MOVE SEWD THROUGH THE GREAT LAKES...PUSHING SFC FRONT
SWD INTO AR.  LACK OF UVV...STABLE BOUNDARY LAYER AND BUILDING
HEIGHTS WILL ACT TO SUPPRESS PRECIP.  BEST CHANCES FOR SHRA/TSRA
WILL BE OVER CNTRL MO TONIGHT AS MESOETA SHOWING 850-700MB FORCING
AND SHOWALTERS AOB ZERO.  SAME TREND SEEN OVER NERN MO ON WEDNESDAY
NIGHT AS LOW LEVEL FRONT BEGINS TO MOVE NWD IN RESPONSE TO LOW
DEVELOPING OVER CNTRL HI PLAINS.

NGM CROSS SECTIONS SHOWING ABUNDANT LOW-MID LEVEL RH NEXT 48
HRS...SO WILL KEEP MO CLDY/CLDY WORDING.  GUIDANCE TEMPS AGREE ON
LOWS...BUT WILL TREND ON COOLER SIDE OF GUIDANCE FOR HIGHS WITH LACK
OF SUN AND ELY WINDS.

.STL...NONE

BRITT

In the hours before

Special weather statement, Apr 3, 12:00 PM CDT, 1 hour 35 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-041300-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1200 PM CDT TUE APR 3 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST
MISSOURI THIS AFTERNOON.

A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS MOVED ACROSS WEST
CENTRAL MISSOURI THIS MORNING PRODUCING HEAVY DOWNPOURS...GUSTY
WINDS AND LARGE HAIL.  THESE THUNDERSTORMS ARE EXPECTED TO WEAKEN
SOMEWHAT AS THEY MOVE INTO SOUTHEAST MISSOURI THIS AFTERNOON. EVEN
SO...SPOTTER ACTIVATION MAY BE REQUIRED IN SOME AREAS.

LENNING

Special weather statement, Apr 3, 12:03 PM CDT, 1 hour 32 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-041300-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1200 NOON CDT TUE APR 3 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST
MISSOURI THIS AFTERNOON.

A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS MOVED ACROSS WEST
CENTRAL MISSOURI THIS MORNING PRODUCING HEAVY DOWNPOURS...GUSTY
WINDSd AND LARGE HAIL.  THESE THUNDERSTORMS ARE EXPECTED TO WEAKEN
SOMEWHAT AS THEY MOVE INTO SOUTHEAST MISSOURI THIS AFTERNOON. EVEN
SO...SPOTTER ACTIVATION MAY BE REQUIRED IN SOME AREAS.

LENNING

Special weather statement, Apr 3, 12:05 PM CDT, 1 hour 30 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-041300-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1200 CDT TUE APR 3 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST
MISSOURI THIS AFTERNOON.

A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS MOVED ACROSS WEST
CENTRAL MISSOURI THIS MORNING PRODUCING HEAVY DOWNPOURS...GUSTY
WINDS AND LARGE HAIL.  THESE THUNDERSTORMS ARE EXPECTED TO WEAKEN
SOMEWHAT AS THEY MOVE INTO SOUTHEAST MISSOURI THIS AFTERNOON. EVEN
SO...SPOTTER ACTIVATION MAY BE REQUIRED IN SOME AREAS.

LENNING

Local storm report, Apr 3, 12:59 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1259 PM CDT TUE APR 03 2001

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
.
1240 PM    WESTPHALIA                MO   0.75 INCH HAIL
04/03/01   OSAGE                          1/2 TO 3/4 INCH HAIL
                                          COVERED THE GROUND

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 11:47 AM CDT	Severe Thunderstorm Warning	LSX	Cole	43 min
Apr 3, 12:12 PM CDT	Flash Flood Warning	LSX	Moniteau	4 hr
Apr 3, 12:30 PM CDT	Severe Thunderstorm Warning	LSX	Osage	45 min
Apr 3, 12:35 PM CDT	Severe Thunderstorm Warning	LSX	Cole	40 min
Apr 3, 2:16 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Washington	44 min
Apr 3, 3:25 PM CDT	Severe Thunderstorm Warning	LSX	Madison	50 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2001 Every severe thunderstorm warning in 2001

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.