Alert archive / Missouri / Tornado Warnings in 1999
Tornado Warning 25, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 8, 1999, 7:42 PM CDT for Pike County, Missouri. It was in force for 48 min. 2 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, 7:42 PM CDT (00:42 UTC)
- Expired
- Apr 8, 1999, 8:30 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Pike County, MO
The radar
The St Louis radar (KLSX), 83 km from the middle of the area, began a volume at 00:41 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, 7:55 PM CDT | Hail 1 | Bowling Green, MO | |
| Apr 8, 7:57 PM CDT | Hail 0.75 | Bowling Green, 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, 5:15 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 237 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
- 859 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 344 m²/s²
- 0-3 km storm-relative helicity
- 449 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KSTL 090043 RRA TORSTL MOC163-090130- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 742 PM CDT THU APR 8 1999 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... PIKE COUNTY MISSOURI IN NORTHEASTERN MISSOURI * UNTIL 830 PM CDT * AT 742 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO ENTERING SOUTHWEST PIKE COUNTY... MOVING NORTHEAST AT 50 MPH. * LOCATIONS IN THE PATH... BOWLING GREEN CLEMENT ASHLAND THIS IS A DANGEROUS SITUATION IF IN THE PATH...TAKE COVER NOW MOVE TO A BASEMENT IF AVAILABLE. IF NOT...STAY ON THE LOWEST LEVEL AND GO TO A SMALL INTERIOR ROOM. MOBILE HOMES AND AUTOMOBILESHOULD BE ABANDONED IN FAVOR OF A STRONG STRUCTURE. AS A LAST RESORT... MOVE TO A DITCH OR CULVERT AND COVER YOUR HEAD. TS/RP
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Apr 8, 5:45 PM CDT, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
545 PM CDT THU APR 08 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0533 PM NOVELTY MO 1 INCH HAIL
04/08/99 KNOX
0538 PM NOVELTY MO 1.75 INCH HAIL
04/08/99 KNOX REPORTED 2 MILES WEST OF
NOVELTY.
WDBLocal storm report, Apr 8, 5:45 PM CDT, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
545 PM CDT THU APR 08 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0533 PM NOVELTY MO 1 INCH HAIL
04/08/99 KNOX
0538 PM NOVELTY MO 1.75 INCH HAIL
04/08/99 KNOX REPORTED 2 MILES WEST OF
NOVELTY.
WDBThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 7:12 PM CDT | Tornado Warning | LSX | Gasconade | 48 min |
| Apr 8, 7:20 PM CDT | Tornado Warning | LSX | Audrain, Montgomery | 50 min |
| Apr 8, 7:33 PM CDT | Tornado Warning | LSX | Franklin, Warren | 47 min |
| Apr 8, 8:15 PM CDT | Tornado Warning | LSX | Gasconade | 50 min |
| Apr 8, 8:36 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 49 min |
Nearby
Tornado Warnings in Missouri, 1999Every tornado warning in 1999Tornadoes 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.