Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 61, NWS Springfield, MO
NWS Springfield, MO issued this severe thunderstorm warning at Apr 8, 1999, 7:05 PM CDT for Douglas County, Webster County, Wright County, Missouri. It was in force for 65 min. 5 reports 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
- Apr 8, 1999, 7:05 PM CDT (00:05 UTC)
- Expired
- Apr 8, 1999, 8:10 PM CDT
- In force
- 65 min
- Issued by
- NWS Springfield, MO
- Area
- Whole counties
Counties Douglas County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 70 km from the middle of the area, began a volume at 00:09 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 |
|---|---|---|---|
| Apr 8, 7:10 PM CDT | Thunderstorm Wind | Fordland, MO | |
| Apr 8, 7:15 PM CDT | Tornado F0 | Seymour, MO | |
| Apr 8, 7:15 PM CDT | Thunderstorm Wind | Seymour, MO | |
| Apr 8, 7:20 PM CDT | Thunderstorm Wind 52 | Hartville, MO | |
| Apr 8, 7:35 PM CDT | Thunderstorm Wind | Ava, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 8, 6:15 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.1 hours before the alert went out and 109 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
- 737 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 937 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 453 m²/s²
- 0-3 km storm-relative helicity
- 582 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 13.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Springfield, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 2:30 PM CDT, 4 hours 35 minutes earlier.
Area forecast discussion, Apr 8, 2:30 PM CDT, 4 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SPRINGFIELD MO 230 PM CDT THU APR 8 1999 FORECAST ISSUES: SEVERE THUNDERSTORM POTENTIAL THROUGH EARLY TONIGHT AND TSTM CHANCES AGAIN FRI NGT AND SAT. DRY LINE MARCHING THROUGH EXTREME ERN KS AND NEARING OUR CWFA. ALL INGREDIENTS APPEAR TO BE IN PLACE TO PRODUCE A VERY ACTIVE LATE AFTERNOON AND EVENING ACROSS THE SGF CWFA. SURROUNDING PROFILERS AND KSGF 88D VAD WINDS INDICATE IMPRESSIVE SPEED AND DIRECTIONAL SHEAR. WATER VAPOR IMAGERY INDICATES SHORTWAVE CENTERED OVER CEN NE WITH DRY SLOT PUNCHING EWD INTO WRN MO. SEVERE THREAT WILL ONLY INCREASE AS LINE PROGRESSES ACROSS THE OZARKS THROUGH THE EARLY EVENING. AIRMASS WILL CONTINUE TO DESTABILIZE AS LAPSE RATES STEEPEN AND THE CAP WEAKENS. STRONG GRADIENT WINDS WILL CONTINUE AS DEEPENING SURFACE LOW INDICATED TO TAKE A MORE EWD TRACK ACROSS IA. THIS SUPPORTED BY PRESSURE FALLS ACRS ERN NE INTO WRN IA. COULD SEE HIGHER GUSTS WITH MIXING BEHIND THE DRYLINE. WILL CONTINUE WIND ADVISORY WRN PORTION THIS EVENING. NEXT QUESTION IS TSTM DEVELOPMENT AGAIN FRI NGT/SAT. NEXT IN SERIES OF SHORTWAVES NOW DROPPING DOWN THE CA COAST WILL SWING ENE INTO THE PLAINS FRI NGT/SAT MRNG. WARM AIR/MOISTURE ADVECTION INDICATED TO DEVELOP LATE FRI BUT AMOUNT OF MOISTURE RETURN IN QUESTION. MAY SEE MORE ACTION WITH WARM FRONT WITH SYSTEM ON SATURDAY. INCREASING FRONTOGENIC FORCING INDICATED IN THE 850-700 MB LAYER LATE FRI NGT ACROSS THE OZARKS ALONG A DEVELOPING WARM FRONT. MAY SEE ANOTHER LINE OF STORMS ALONG AN ADVANCING DRY LINE DURING THE DAY SAT BUT TIMING HARD TO PINPOINT THIS FAR OUT. WILL CARRY CHANCE POPS FOR NOW. IN THE EXTENDED...NEXT SYSTEM WILL PUSH INTO THE PLAINS LATE MONDAY AND TUESDAY. CCF (CCF FOR COORDINATION PURPOSES ONLY) SGF UT 051/074 052/071 046 115033 JLN UT 051/075 054/072 047 112033 VIH UT 050/073 051/071 046 116044 UNO UT 052/075 053/073 047 116044 FOSTER
In the hours before
Special weather statement, Apr 8, 3:30 PM CDT, 3 hours 35 minutes before
KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-082215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 330 PM CDT THU APR 8 1999 THE THREAT FOR SEVERE WEATHER HAS DIMINISHED ACROSS SOUTHERN MISSOURI AND SOUTHEAST KANSAS...BUT THERE REMAINS A GOOD CHANCE FOR SEVERE WEATHER NORTH OF A LINE FROM LAMAR TO OSAGE BEACH TO ROLLA. AT 315 PM THE STRONGEST STORMS WERE TO THE NORTH OF FT SCOTT AND WERE MOVING NORTHWARD INTO THE KANSAS CITY AREA. AS SUCH THE TORNADO WATCH ISSUED FOR SOUTHEAST KANSAS HAS BEEN CANCELLED. CLOUD COVER OVER THE SOUTHERN SECTIONS OF MISSOURI HAS REDUCED THE EFFECT OF AFTERNOON HEATING ON STORM DEVELOPMENT. WHILE THERE REMAINS A CHANCE OF ISOLATED SEVERE STORMS...THE THREAT FOR TORNADOES...LARGE HAIL AND DAMAGING WINDS HAS DIMINISHED CONSIDERABLY. STAY TUNED FOR FURTHER STATEMENTS FROM THE NATIONAL WEATHER SERVICE. RUNNELS
Special weather statement, Apr 8, 3:30 PM CDT, 3 hours 35 minutes before
KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-082215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 330 PM CDT THU APR 8 1999 THE THREAT FOR SEVERE WEATHER HAS DIMINISHED ACROSS SOUTHERN MISSOURI AND SOUTHEAST KANSAS...BUT THERE REMAINS A GOOD CHANCE FOR SEVERE WEATHER NORTH OF A LINE FROM LAMAR TO OSAGE BEACH TO ROLLA. AT 315 PM THE STRONGEST STORMS WERE TO THE NORTH OF FT SCOTT AND WERE MOVING NORTHWARD INTO THE KANSAS CITY AREA. AS SUCH THE TORNADO WATCH ISSUED FOR SOUTHEAST KANSAS HAS BEEN CANCELLED. CLOUD COVER OVER THE SOUTHERN SECTIONS OF MISSOURI HAS REDUCED THE EFFECT OF AFTERNOON HEATING ON STORM DEVELOPMENT. WHILE THERE REMAINS A CHANCE OF ISOLATED SEVERE STORMS...THE THREAT FOR TORNADOES...LARGE HAIL AND DAMAGING WINDS HAS DIMINISHED CONSIDERABLY. STAY TUNED FOR FURTHER STATEMENTS FROM THE NATIONAL WEATHER SERVICE. RUNNELS
Special weather statement, Apr 8, 5:14 PM CDT, 1 hour 51 minutes before
MOZ055>058-068>071-090030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 514 PM CDT THU APR 8 1999 ...A TORNADO WATCH HAS BEEN ISSUED FOR PORTIONS OF CENTRAL MISSOURI EFFECTIVE UNTIL 9 PM... A TORNADO WATCH HAS BEEN ISSUED FOR BENTON...HICKORY...MORGAN.. MILLER...MARIES...CAMDEN...PULASKI...AND PHELPS COUNTIES IN CENTRAL MISSOURI. THIS WATCH IS EFFECTIVE UNTIL 9 PM THIS THURSDAY EVENING. A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE RAPIDLY EAST ACROSS CENTRAL MISSOURI...INCLUDING THE LAKE OF THE OZARKS AREA... THIS THURSDAY EVENING. THESE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND IN EXCESS OF 70 MPH...LARGE HAIL...AND POSSIBLY A FEW TORNADOES. TORNADOES HAVE ALREADY BEEN REPORTED IN NORTH CENTRAL MISSOURI LATE THIS AFTERNOON. STAY TUNED TO THE LATEST STATEMENTS AND WARNINGS. FOSTER
Special weather statement, Apr 8, 5:14 PM CDT, 1 hour 51 minutes before
MOZ055>058-068>071-090030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 514 PM CDT THU APR 8 1999 ...A TORNADO WATCH HAS BEEN ISSUED FOR PORTIONS OF CENTRAL MISSOURI EFFECTIVE UNTIL 9 PM... A TORNADO WATCH HAS BEEN ISSUED FOR BENTON...HICKORY...MORGAN.. MILLER...MARIES...CAMDEN...PULASKI...AND PHELPS COUNTIES IN CENTRAL MISSOURI. THIS WATCH IS EFFECTIVE UNTIL 9 PM THIS THURSDAY EVENING. A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE RAPIDLY EAST ACROSS CENTRAL MISSOURI...INCLUDING THE LAKE OF THE OZARKS AREA... THIS THURSDAY EVENING. THESE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND IN EXCESS OF 70 MPH...LARGE HAIL...AND POSSIBLY A FEW TORNADOES. TORNADOES HAVE ALREADY BEEN REPORTED IN NORTH CENTRAL MISSOURI LATE THIS AFTERNOON. STAY TUNED TO THE LATEST STATEMENTS AND WARNINGS. FOSTER
Special weather statement, Apr 8, 6:32 PM CDT, 33 minutes before
MOZ056>058-069>071-079>083-090>092-094>098-102>106-090100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 632 PM CDT THU APR 8 1999 ...A TORNADO WATCH HAS BEEN ISSUED FOR SOUTH CENTRAL MISSOURI UNTIL 10 PM THIS THURSDAY EVENING... A TORNADO WATCH HAS BEEN ISSUED FOR THE FOLLOWING COUNTIES. POLK GREENE CHRISTIAN STONE DALLAS LACLEDE WEBSTER WRIGHT DOUGLAS OZARK TANEY HOWELL OREGON SHANNON DENT TEXAS HICKORY CAMDEN MILLER MARIES PULASKI PHELPS LAWRENCE BARRY A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL PUSH ACROSS SOUTH CENTRAL MISSOURI THIS EVENING. THESE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS TO 70 MPH... AND A FEW TORNADOES. STAYED TUNED TO THE LATEST STATEMENTS AND WARNINGS. FOSTER
Special weather statement, Apr 8, 6:32 PM CDT, 33 minutes before
MOZ056>058-069>071-079>083-090>092-094>098-102>106-090100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 632 PM CDT THU APR 8 1999 ...A TORNADO WATCH HAS BEEN ISSUED FOR SOUTH CENTRAL MISSOURI UNTIL 10 PM THIS THURSDAY EVENING... A TORNADO WATCH HAS BEEN ISSUED FOR THE FOLLOWING COUNTIES. POLK GREENE CHRISTIAN STONE DALLAS LACLEDE WEBSTER WRIGHT DOUGLAS OZARK TANEY HOWELL OREGON SHANNON DENT TEXAS HICKORY CAMDEN MILLER MARIES PULASKI PHELPS LAWRENCE BARRY A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL PUSH ACROSS SOUTH CENTRAL MISSOURI THIS EVENING. THESE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS TO 70 MPH... AND A FEW TORNADOES. STAYED TUNED TO THE LATEST STATEMENTS AND WARNINGS. FOSTER
The office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 7:19 PM CDT | Tornado Warning | SGF | Douglas | 66 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1999Every 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; radar from the NEXRAD Level II archive.