Alert archive / Missouri / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 209, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 4, 2000, 8:39 PM CDT for Franklin County, Jefferson County, Missouri. It was in force for 51 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Jun 4, 2000, 8:39 PM CDT (01:39 UTC)
- Expired
- Jun 4, 2000, 9:30 PM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Franklin County, MO, Jefferson County, MO
The radar
The St Louis radar (KLSX), 37 km from the middle of the area, began a volume at 01:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 8:50 PM CDT | Thunderstorm Wind 52 E | Robertsville, MO | The County Sheriff reported trees down blocking Highway N. |
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 00:00Z, 1.7 hours before the alert went out and 275 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 956 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 366 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLSX 050140 SVRSTL MOC071-099-050230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 839 PM CDT SUN JUN 4 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI WESTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI * UNTIL 930 PM CDT * AT 839 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES EAST OF PINEY PARK..MOVING SOUTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... DITTMER MORSE MILL FLETCHER HILLSBORO PRIMARY THREAT WILL BE DAMAGING WINDS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. LAT...LON 3856 9100 3824 9112 3810 9059 3850 9056 RP
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 Jun 4, 1:55 PM CDT, 6 hours 44 minutes earlier.
Area forecast discussion, Jun 4, 1:55 PM CDT, 6 hours 44 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 155 PM CDT SUN JUN 4 2000 MAIN FORECAST CHALLENGE DEALS WITH THUNDERSTORMS TONIGHT. ETA SEEMED TO BE VERIFYING THE BEST AT 18Z...SO WILL FOLLOW THE CLOSEST. INGREDIENTS FOR TSRA ARE NOT ALL TOGETHER AS BEST UVV ASSOCIATED WITH SHORTWAVE TROF SRN MN/WRN IA WILL BE OVER IA...FAR NERN MO AND NRN AND CNTRL IL. ELEVATED STORMS ALONG MO/IA BORDER ARE STAYING JUST OUTSIDE OF CWFA ATTM. FORECAST FOR EVENING HAS BEEN COMPLICATED BY OUTFLOW BOUNDARY LAID OUT BY MORNING CONVECTION NEAR THE MS RIVER. AT 18Z...SATELLITE AND SURFACE OBS PLACED THIS BOUNDARY FROM THE SRN STL METRO TO COU TO NEAR CHILLICOTHE LINE. THE COLD FRONT WAS CURRENTLY INTERSECTING THE COLD FRONT OVER NWRN MO WHERE OBJECTIVE ANALYSIS IS SHOWING LOCALIZED SFC MOISTURE CONVERGENCE WITH LITTLE CAP AND LI'S AOB MINUS 8 AND CAPES AOA 2000 J/KG. THIS INTERSECTION IS CLOSE TO SFC LOW OVER S CNTRL IA WHICH THE MESOETA MOVES TO JUST NE OF STL BY 06Z. THINK BOUNDARY WILL MOVE BACK N JUST A BIT IN RESPONSE TO THE LOW...SO WILL PUT BEST POPS ALONG AND N OF BOUNDARY OVR NE MO AND SW IL. SVR TSRA IS POSSIBLE AS 0-6 KM SHEAR IS BETWEEN 35-45 KTS AND SELY SFC WINDS ARE ENHANCING SRH ALONG AND N OF THE BOUNDARY. LOWER CHC POPS WILL DO FARTHER S ALONG THE COLD FRONT. FRONT WILL MOVE SE OVERNIGHT WITH WINDS TURNING NLY BEHIND FNT. ABUNDANT LOW CLOUDS SEEN BEHIND FRONT OVER UPPER MIDWEST WILL FILTER DOWN OVER REGION. CYCONLIC LOW FLOW WITH HIGH RELATIVE HUMIDITIES SHOULD KEEP THESE CLOUDS IN THE REGION INTO MONDAY NIGHT. RIDGE WILL FINALLY CROSS AREA ON TUESDAY...SO DON'T EXPECT MUCH OF WARM UP UNTIL MIDWEEK. TEMP GUIDANCE IS IN GOOD AGREEMENT AND WILL GENERALLY FOLLOW. DO PLAN TO TRIM HIGHS A CAT ON MONDAY WITH LOW CLOUDS AND BRISK NORTH WINDS. IN THE EXTENDED...ALL THE MEDIUM RANGE MODELS SHOWING THE SAME GENERAL TREND OF LARGE RIDGE OVER THE WRN U.S. BEGINNING TO FLATTEN OUT AS IT MOVES S OF LARGE VORTEX OVER ERN CANADA. WHILE THERE ARE DIFFERENCES IN THE DETAILS...DON'T SEE ANY FOCUS FOR RAIN IN THE EXTENDED. MRF GUIDANCE TEMPS FALL IN LINE WITH 850MB TEMPS AND WILL FOLLOW. .STL...NONE BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 7:01 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 59 min |
| Jun 4, 7:21 PM CDT | Severe Thunderstorm Warning | LSX | Osage | 54 min |
| Jun 4, 7:24 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 51 min |
| Jun 4, 8:51 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 39 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2000Every severe thunderstorm warning in 2000
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; radar from the NEXRAD Level II archive.