Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 103, NWS Sioux Falls, SD

June 8, 1999Lincoln County, Lyon County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 8, 1999, 11:10 PM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 35 min. 1 report 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: Jun 8, 1999, 11:10 PM CDT (04:10 UTC)
Expired: Jun 8, 1999, 11:45 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lincoln County, MN, Lyon County, MN

What was reported inside it

Time	Report	Where	Remark
Jun 8, 11:28 PM CDT	Hail 0.75	Tyler, MN

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

Aberdeen, SD (KABR), launched 00:00Z, 4.2 hours before the alert went out and 193 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: 3880 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1393 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 9:55 PM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Jun 8, 9:55 PM CDT, 1 hour 15 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
955 PM CDT TUE JUN 8 1999

STORM WHICH PRODUCED UP TO GOLFBALL SIZE HAIL EARLIER DISSIPATED AS
IT APPROACHED FSD...WHERE WINDOW CHECK REVEALED BACKWARD TILT TO
STORM.  NICE MAMMATUS...BUT NOT MUCH UNDERNEATH IT. ANOTHER ISOLATED
CELL POPPED UP NORTHEAST OF MHE...BUT CALLS TO AREA INDICATE THIS
TOO HAS LITTLE LOW LEVEL STRUCTURE...WITH LITTLE RAIN AND NO HAIL
REPORTED.  LOOP OF KLNX RADAR SHOWS LINE APPEARS TO BE WEAKENING
SOMEWHAT AS IT MOVES NORTHEAST...BUT STILL WARRANTS SOME WATCHING
AS AN ISOLATED HAIL OR WIND REPORT CANNOT BE RULED OUT.  LATEST RUC
STILL SHOWS 40-50KT LLJ AIMED AT WESTERN CWA OVERNIGHT...AND WITH
APPROACHING STORMS...HAVE UPPED POPS IN SOUTHWEST COUNTIES.  LITTLE
CHANGE TO REMAINDER OF ZONE SET OTHER THAN CLEANING UP WINDS AND
PUSHING TSRA CHANCES TO AFTER MIDNIGHT EVERYWHERE EXCEPT WESTERN
ARE$A.

.FSD...NONE

In the hours before

Local storm report, Jun 8, 8:46 PM CDT, 2 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
846 PM CDT TUE JUN 08 1999

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

0813 PM    PARKER                    SD    1 INCH HAIL
06/08/99   TURNER

0827 PM    12 SE PARKER              SD    1.75 INCH HAIL
06/08/99   TURNER

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 8:15 PM CDT	Severe Thunderstorm Warning	FSD	Turner	30 min
Jun 8, 10:18 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Jerauld	42 min
Jun 8, 10:42 PM CDT	Severe Thunderstorm Warning	FSD	Jerauld	33 min
Jun 8, 10:56 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	34 min
Jun 9, 12:40 AM CDT	Flash Flood Warning	FSD	Douglas, Hutchinson	110 min
Jun 9, 1:40 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	30 min
Jun 9, 2:09 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	31 min
Jun 9, 6:50 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee	25 min
Jun 9, 6:53 PM CDT	Severe Thunderstorm Warning	FSD	Ida	52 min
Jun 9, 6:59 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	46 min
Jun 8, 11:29 PM CDT	Severe Thunderstorm Warning	FSD	Murray	31 min
Jun 8, 11:44 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon	46 min
Jun 9, 12:29 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon	61 min
Jun 9, 4:00 AM CDT	Flash Flood Warning	FSD	Lincoln, Pipestone	2 hr
Jun 9, 2:03 PM CDT	Severe Thunderstorm Warning	FSD	Jackson	32 min
Jun 9, 2:59 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1999 Every 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.