Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 44, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 22, 1997, 6:30 PM CDT for Lyon County, Minnesota. It was in force for 30 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 22, 1997, 6:30 PM CDT (23:30 UTC)
- Expired
- Jun 22, 1997, 7:00 PM CDT
- In force
- 30 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lyon County, MN
The radar
The Sioux Falls radar (KFSD), 116 km from the middle of the area, began a volume at 23:34 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 22, 5:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 184 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1642 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
155 WUUS1 KFSD 222330 RRA SVRFSD MNC083-230000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 630 PM CDT SUN JUN 22 1997 * SEVERE THUNDERSTORM WARNING FOR SOUTHERN LYON COUNTY - IN SOUTHWESTERN MINNESOTA * UNTIL 700 PM CDT * SOME AREAS AFFECTED BALATON AROUND 635 PM CDT GARVIN AROUND 645 PM CDT * AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM SOUTH OF MARSHALL MOVING MOVING SOUTHEAST AT 30 MPH. SOFTBALL SIZE HAIL WAS REPORTED 13 MILES WEST OF MARSHALL AT 620 PM. A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES...SO GO TO YOUR DESIGNATED SHELTER. RSR
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 22, 10:08 AM CDT, 8 hours 22 minutes earlier.
Area forecast discussion, Jun 22, 10:08 AM CDT, 8 hours 22 minutes before
SOUTH DAKOTA/NORTHWEST IOWA/SOUTHWEST MINNESOTA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 1005 AM CDT SUN JUN 22 1997 MADE SOME CHGS TO PREV FCST. MAIN LIFT AND DYNAMICS SHUD BE NRN PART@ OF CWA THIS AFTN WITH BEST HEATING S. WL UP POPS TO 60 UP N AND RAISE TEMPS TO LWR TO MID 90S S. WL ALSO ADJUST FCST FOR TNGT AND MON AS SHUD BE CAPPING OFF TO SOME EXTENT AND WIND SHIFT NOT LIKELY. .FSD...NONE RYRHOLM
In the hours before
Special weather statement, Jun 22, 6:09 PM CDT, 21 minutes before
SDZ038>040-052>056-230400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 605 PM CST SUN JUN 22 1997 ...TORNADO WATCH EXTENDED UNTIL 11PM CDT FOR MUCH OF EAST CENTRAL SOUTH DAKOTA..." TORNADO WATCH NUMBER 501 WHICH EXPIRED AT 6PM CDT HAS BEEN EXTENDED UNTIL 11PM BY TORNADO WATCH NUMBER 509. CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 5:02 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 48 min |
| Jun 22, 5:26 PM CDT | Tornado Warning | FSD | Lincoln | 29 min |
| Jun 22, 5:45 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 45 min |
| Jun 22, 5:56 PM CDT | Tornado Warning | FSD | Lincoln | 29 min |
| Jun 22, 6:19 PM CDT | Severe Thunderstorm Warning | FSD | Murray, Pipestone | 46 min |
| Jun 22, 6:58 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood, Murray | 47 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997
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.