Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 99, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 15, 1994, 8:15 PM CDT for Brule County, South Dakota. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jul 15, 1994, 8:15 PM CDT (01:15 UTC)
- Expired
- Jul 15, 1994, 9:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Brule County, SD
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 1.3 hours before the alert went out and 142 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
- 1805 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 160116 RRA SVRFSD SDC015-160200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 815 PM CDT FRI JUL 15 1994 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL SOUTH DAKOTA ...BRULE COUNTY AT 813 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS MOVING INTO WESTERN BRULE COUNTY IN SOUTH CENTRAL SOUTH DAKOTA. SOME CITIES IN THE PATH OF THIS STORM ARE CHAMBERLAIN AND KIMBALL. THE STORM WAS MOVING TO THE SOUTHEAST AT 30 MPH. THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.
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.
In the hours before
Special weather statement, Jul 15, 3:01 PM CDT, 5 hours 14 minutes before
SDZ020>023-152200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 300 PM CDT FRI JUL 15 1994 DEUEL COUNTY SHERIFFS OFFICE REPORTS A FUNNEL CLOUD AT 216 PM CDT 6 MILES EAST OF CLEAR LAKE IN CENTRAL DEUEL COUNTY. THE FUNNEL DROPPED OUT OF THE CLOUD BRIEFLY AND NEVER TOUCHED GROUND. SCATTERED THUNDERSTORMS IN EAST CENTRAL SOUTH DAKOTA HAVE BEEN BUILDING RAPIDLY AND THEN FALLING APART JUST AS RAPIDLY. RAINFALL AMOUNTS OF ONE HALF INCH OR MORE IN A SHORT PERIOD HAVE ALSO BEEN REPORTED. THESE THUNDERSTORMS ARE ALSO CAPABLE OF PRODUCING STRONG WINDS AND PEA SIZE HAIL. IF YOU SEE THREATENING WEATHER APPROACHING TAKE COVER. STOREY
Special weather statement, Jul 15, 6:44 PM CDT, 1 hour 31 minutes before
SDZ033>037-048-051-160200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 643 PM CDT FRI JUL 15 1994 AT 630 PM CDT...WEATHER SERVICE RADAR SHOWED A LINE OF VERY STRONG THUNDER- STORMS LOCATED FROM AGAR...SOUTHWEST THROUGH ONIDA...CONTINUED SOUTHWEST THROUGH PIERRE. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR. THESE STORMS WILL MOVE THROUGH HYDE, HUGHES, SULLY AND NORTHERN LYMAN COUNTIES DURING THE NEXT 2 HOURS. THE STRONGEST STORM WAS LOCATED OVER OF PIERRE. THESE STORMS ARE PRODUCING MARBLE SIZE HAIL IN PIERRE...NEAR OAHE DAM... WINDS OF 50 MILES AN HOUR...AND INTENSE AMOUNTS OF RAINFALL IN VERY BRIEF PERIODS. IF THREATENING WEATHER APPROACHES...TAK@E SHELTER. ...VOGELSANG...
Special weather statement, Jul 15, 7:49 PM CDT, 26 minutes before
SDZ049-160115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 750 PM CDT THU JUL 14 1994 ...THUNDERSTORMS IN TRIPP COUNTY APPROACHING WINNER SD... A LINE OVE THUNDERSTORMS MOVING ACROSS CENTRAL SOUTH DAKOTA HAD DEVELOPED SOUTH INTO WESTERN TRIPP COUNTY BY 750 PM CDT. THESE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 30 MPH AND ARE EXPECTED TO MOVE INTO CENTRAL TRIPP COUNTY INCLUDING WINNER SD BY 815 PM CDT. THESE THUNDERSTORMS WILL LIKELY PRODUCE HEAVY RAIN AND GUSTY WINDS... AND COULD PRODUCE SMALL HAIL ALSO. RESIDENTS AND TRAVELERS SHOULD SEEK SAFE SHELTER NOW AND LISTEN FOR FURTHER STATEMENTS...AND FOR POSSIBLE WARNINGS SHOULD THE STORMS FURTHER INTENSIFY. WILLIHAMS
Nearby
Severe Thunderstorm Warnings in South Dakota, 1994Every severe thunderstorm warning in 1994
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.