Alert archive / Missouri / Tornado Warnings in 1999

Tornado Warning 29, NWS Springfield, MO

June 28, 1999Vernon County, Missouri

NWS Springfield, MO issued this tornado warning at Jun 28, 1999, 2:27 AM CDT for Vernon County, Missouri. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 28, 1999, 2:27 AM CDT (07:27 UTC)
Expired: Jun 28, 1999, 3:15 AM CDT
In force: 48 min
Issued by: NWS Springfield, MO
Area: Whole counties

County Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 107 km from the middle of the area, began a volume at 07:30 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 00:00Z, 7.5 hours before the alert went out and 116 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: 1696 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 13.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSGF 280728 RRA
TORSGF
MOC217-280815-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
227 AM CDT MON JUN 28 1999

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  VERNON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 315 AM CDT

* AT 226 AM DOPPLER RADAR INDICATED A DEVELOPING TORNADO 5 MILES
  EAST OF NEVADA.  THIS STORM WAS MOVING EAST SOUTHEAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WALKER
  OAK RIDGE
  DEDERICK


THIS IS A DANGEROUS SITUATION.  MOVE QUICKLY TO A DESIGNATED
SHELTER...BASEMENT...OR INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR BUILDING.

JT/CR

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.

NWS Springfield, MO wrote its last area forecast discussion before this tornado warning went out at Jun 28, 2:15 AM CDT, 12 minutes earlier.

Area forecast discussion, Jun 28, 2:15 AM CDT, 12 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
215 AM CDT MON JUN 28 1999

MAIN FORECAST CONCERNS TODAY INCLUDE:
WHERE TO PLACE FLASH FLOOD WATCH THIS MORNING
CAN WE LEAVE POPS OUT SOMEWHERE TONIGHT/TUESDAY?
TEMPERATURES

WEATHER IS QUITE ACTIVE THIS MORNING ACROSS THE FORECAST AREA: AREA
OF THUNDERSTORMS EXTENDED FROM CENTRAL MISSOURI INTO NORTHEAST
KANSAS WITH HEAVY RAINFALL AND ISOLATED SEVERE WEATHER. DEWPOINTS IN
THE MIDDLE AND UPPER 70S ACROSS THE SOUTHERN HALF OF THE FORECAST
AREA WITH UPPER 60S NORTH. MORE THUNDERSTORMS WERE LOCATED FROM
NEBRASKA TO SOUTH DAKOTA.

SIMILAR TO PAST NIGHTS...THE SHORT RANGE MODELS ARE IN GOOD
AGREEMENT WITH THE GENERAL FLOW PATTERN. THE DIFFERENCES APPEAR IN
THE STRENGTH OF THE INDIVIDUAL WAVES (ETA IS THE STRONGEST AND AVN
THE WEAKEST) AND IN THE PRECIPITATION FIELDS. WILL FOLLOW THE ETA
OUTPUT FOR REASONS GIVEN BELOW...

FIRST...FRONTAL BOUNDARY WILL MOVE THROUGH THE FORECAST AREA TODAY
AND PAY A BRIEF VISIT TO NORTHERN ARKANSAS BEFORE RETURNING NORTH
TUESDAY NIGHT/WEDNESDAY. NGM AND AVN PUSH THIS BOUNDARY INTO CENTRAL
ARKANSAS...WHICH IS PROBABLY OPTIMISTIC CONSIDERING THE DISTANCE
FROM THE SIGNIFICANT DYNAMICS.

ALSO...PREVIOUS REASONING THAT FORECAST AREA WOULD EXPERIENCE A RAIN
FREE PERIOD TONIGHT AND TUESDAY IS BECOMING LESS LIKELY WITH EACH
MODEL RUN. WHILE THERE WILL LIKELY BE A BREAK FROM THE RAIN LATE
THIS MORNING INTO THIS AFTERNOON...THUNDERSTORMS IN NEBRASKA SHOULD
ARRIVE BY DINNER TIME. SOUTHERLY WINDS REDEVELOP OVER EASTERN KANSAS
BY MIDDAY TUESDAY WHICH SHOULD PRODUCE PRECIPITATION OVER WESTERN
SECTIONS LATE IN THE AFTERNOON. ANOTHER FACTOR AGAINST A NO POP
FORECAST IS THE POSSIBILITY OF ANOTHER MCS TONIGHT IN KANSAS AND
OKLAHOMA THAT COULD AFFECT SOUTHERN MISSOURI.

SO...WILL KEEP AT LEAST CHANCE POPS IN THE FORECAST THROUGH TUESDAY.
FLASH FLOOD WATCH CURRENTLY IN EFFECT FOR CENTRAL MISSOURI WILL BE
CONTINUED UNTIL NOON. WILL NOT SPECULATE ON THE COUNTIES IN THE WATCH
HERE AS THERE MAY BE LAST MINUTE CHANGES MADE BASED ON RADAR TRENDS.

SHOULD SEE A FAIRLY WIDE VARIATION IN TEMPERATURES FROM NORTH TO
SOUTH TODAY: CAPPING INVERSION OVER THE EXTREME SOUTHWEST CORNER OF
THE FORECAST AREA SHOULD CONTINUE TO SUPPRESS CONVECTION...BUT
MIDDLE AND HIGH CLOUDS WILL STILL OCCUR IN THOSE AREAS. WILL LEAN
HEAVILY ON ETA 2M TEMPERATURES THIS MORNING.

SGF TE 082/066 077/065 080 087433
JLN EE 086/068 077/065 084 084334
VIH TE 075/063 075/062 077 08+533
UNO TE 083/067 080/065 080 086433

SUTTON

In the hours before

Local storm report, Jun 27, 9:25 PM CDT, 5 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
925 PM CDT SUN JUN 27 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0750 PM    2 NW STOCKTON             MO    1 INCH HAIL
06/27/99   CEDAR

Local storm report, Jun 28, 12:10 AM CDT, 2 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1210 AM CDT MON JUN 28 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1145 PM    15 SW VERSAILLES          MO    WIND DAMAGE
06/27/99   MORGAN                          TREE BLOWN DOWN ONTO
                                           RESIDENCE IN IVY BEND
                                           AREA ALONG
                                           MORGAN/CAMDEN COUNTY
                                           BORDER.

Local storm report, Jun 28, 12:10 AM CDT, 2 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1210 AM CDT MON JUN 28 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1145 PM    15 SW VERSAILLES          MO    WIND DAMAGE
06/27/99   MORGAN                          TREE BLOWN DOWN ONTO
                                           RESIDENCE IN IVY BEND
                                           AREA ALONG
                                           MORGAN/CAMDEN COUNTY
                                           BORDER.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 7:33 PM CDT	Severe Thunderstorm Warning	SGF	Cedar	62 min
Jun 27, 10:58 PM CDT	Severe Thunderstorm Warning	SGF	Benton	37 min
Jun 27, 11:30 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Morgan	45 min
Jun 27, 11:32 PM CDT	Flash Flood Warning	SGF	Benton, Morgan	4 hr
Jun 28, 12:04 AM CDT	Flash Flood Warning	SGF	Miller	4 hr
Jun 28, 1:00 AM CDT	Severe Thunderstorm Warning	SGF	Camden, Laclede	30 min
Jun 28, 1:56 AM CDT	Severe Thunderstorm Warning	SGF	St. Clair, Vernon	59 min
Jun 28, 2:30 AM CDT	Severe Thunderstorm Warning	SGF	Cedar	55 min
Jun 28, 2:58 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Dade	62 min
Jun 28, 3:22 AM CDT	Flash Flood Warning	SGF	Benton, Hickory, St. Clair	6 hr
Jun 28, 3:22 AM CDT	Flash Flood Warning	SGF	Cedar, Vernon	6 hr
Jun 28, 5:23 AM CDT	Flash Flood Warning	SGF	Dade	4 hr
Jun 28, 8:48 AM CDT	Flash Flood Warning	SGF	Cedar, Dade, St. Clair, Vernon	6 hr
Jun 28, 8:48 AM CDT	Flash Flood Warning	SGF	Benton, Hickory	6 hr
Jun 28, 9:52 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Cedar, Dade	53 min
Jun 28, 10:34 AM CDT	Flash Flood Warning	SGF	Barton, Jasper	3 hr
Jun 28, 10:34 AM CDT	Flash Flood Warning	SGF	Newton	3 hr
Jun 28, 10:47 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Jasper, Lawrence, Newton	48 min
Jun 28, 2:59 PM CDT	Flash Flood Warning	SGF	Benton	6 hr

Nearby

Tornado Warnings in Missouri, 1999 Every tornado warning in 1999 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.