Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 1, NWS Twin Cities, MN

May 7, 2000Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 2000, 7:33 PM CDT for Yellow Medicine County, Minnesota. It was in force for 27 min. 4 reports 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, 2000, 7:33 PM CDT (00:33 UTC)
Expired: May 7, 2000, 8:00 PM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 143 km from the middle of the area, began a volume at 00:35 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.

What was reported inside it

Time	Report	Where	Remark
May 7, 7:55 PM CDT	Hail 1.75	Clarkfield, MN	Home windows broken, water left standing in fields.
May 7, 7:58 PM CDT	Hail 0.75	Clarkfield, MN
May 7, 8:05 PM CDT	Hail 1.5	Clarkfield, MN	Wind driven hail produced major damage to numerous houses and other property.
May 7, 8:05 PM CDT	Thunderstorm Wind 78 E	Clarkfield, MN	Estimated winds. Damage survey indicated damage to numerous barns, sheds, power lines, and trees. Downburst swath was approximately 5 miles wide and 7 miles long.

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

Minneapolis, MN (KMPX), launched 00:00Z, 0.6 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.

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: 998 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1468 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 080034
SVRMSP
MNC173-080100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
733 PM CDT SUN MAY 7 2000

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 800 PM CDT

* AT 733 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 3 MILES WEST
  OF ST LEO...OR ABOUT 21 MILES SOUTH OF MADISON...MOVING NORTHEAST
  AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ST LEO
  HANLEY FALLS
  HAZEL RUN

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 7, 7:59 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Yellow Medicine	46 min
May 7, 8:40 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville	50 min
May 7, 9:08 PM CDT	Tornado Warning	MPX	Kandiyohi	37 min
May 7, 9:27 PM CDT	Severe Thunderstorm Warning	MPX	Meeker	48 min
May 7, 9:44 PM CDT	Tornado Warning	MPX	Meeker	31 min
May 7, 10:12 PM CDT	Severe Thunderstorm Warning	MPX	Isanti, Mille Lacs	48 min
May 7, 10:14 PM CDT	Tornado Warning	MPX	Meeker, Stearns	46 min
May 7, 10:30 PM CDT	Severe Thunderstorm Warning	MPX	Wright	60 min
May 7, 10:33 PM CDT	Tornado Warning	MPX	Wright	57 min
May 7, 10:58 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	47 min
May 7, 11:09 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	51 min
May 8, 1:08 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Sibley	52 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.