Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 1, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 1993, 7:41 PM CDT for Yellow Medicine County, Minnesota. It was in force for 49 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
- May 7, 1993, 7:41 PM CDT (00:41 UTC)
- Expired
- May 7, 1993, 8:30 PM CDT
- In force
- 49 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Yellow Medicine County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 7, 8:27 PM CDT | Tornado F0 | Granite Falls, MN | A tornado touched down briefly south of Granite Falls downing power lines and destroying several farm buildings. |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 0.7 hours before the alert went out and 180 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
- 449 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 975 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 266 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTC 080041 RRA SVRSTC MNC173-080130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 741 PM CDT FRI MAY 7 1993 THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL MINNESOTA ...EASTERN YELLOW MEDICINE COUNTY AT 740 PM RADAR INDICATED A SEVERE THUNDERSTORM ENTERING EASTERN YELLOW MEDICINE COUNTY 5 MILES SOUTH OF HANLEY FALLS WHICH IS 25 MILES NORTHWEST OF REDWOOD FALLS. THE SEVERE THUNDERSTORM WAS MOVING NORTHEAST AT 30 MILES AN HOUR. IF YOU ARE IN HANLEY FALLS...WOOD LAKE AND GRANITE FALLS...YOU SHOULD MO INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. REMEMBER...A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA AND SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE WARNING. HAYS NNNN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:55 PM CDT | Tornado Warning | MPX | Redwood | 35 min |
| May 7, 8:03 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 42 min |
| May 7, 8:05 PM CDT | Tornado Warning | MPX | Chippewa | 40 min |
| May 7, 8:07 PM CDT | Tornado Warning | MPX | Renville | 38 min |
| May 7, 8:31 PM CDT | Tornado Warning | MPX | Yellow Medicine | 59 min |
| May 7, 8:58 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 32 min |
| May 7, 9:25 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 35 min |
| May 8, 2:58 AM CDT | Flash Flood Warning | MPX | Carver, Sibley | 2 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning in 1993
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.