Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 113, NWS Twin Cities, MN

July 3, 1999Brown County, Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 3, 1999, 3:14 AM CDT for Brown County, Redwood County, Minnesota. It was in force for 61 min. 3 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: Jul 3, 1999, 3:14 AM CDT (08:14 UTC)
Expired: Jul 3, 1999, 4:15 AM CDT
In force: 61 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Brown County, MN, Redwood County, MN

The radar

The Minneapolis radar (KMPX), 127 km from the middle of the area, began a volume at 08:13 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
Jul 3, 3:15 AM CDT	Thunderstorm Wind 65	Springfield, MN	Roof partially off house. Winds estimated.
Jul 3, 3:15 AM CDT	Thunderstorm Wind 65	Sanborn, MN	Cattle barn and top of silo demolished. Winds estimated.
Jul 3, 3:25 AM CDT	Thunderstorm Wind 60	New Ulm, MN	Portion of old one story building collapsed onto car. Large tree limbs down. Winds estimated.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 3, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 8.2 hours before the alert went out and 125 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 482 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

814 
WUUS1 KMSP 030815 RRA
SVRMSP
MNC015-127-030915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
314 AM CDT SAT JUL 3 1999

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA
  REDWOOD COUNTY IN SOUTHWESTERN MINNESOTA

* UNTIL 415 AM CDT

* AT 315 AM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH
  DAMAGING WINDS JUST SOUTHWEST OF A LINE FROM REDWOOD FALLS TO NEW
  ULM.  THE STORM WAS MOVING NE AT 40 MPH.

* SOME LOCATIONS AFFECTED
  REDWOOD FALLS
  NEW ULM
  WABASSO
  SLEEPY EYE
  DELHI
  COURTLAND

THIS IS A DANGEROUS STORM...WITH DAMAGING WINDS.  STAY INDOORS
AWAY FROM WINDOWS.



AZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 2:39 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	46 min
Jul 3, 2:56 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	59 min
Jul 3, 3:20 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Renville	60 min
Jul 3, 3:37 AM CDT	Severe Thunderstorm Warning	MPX	Watonwan	48 min
Jul 3, 3:58 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker	62 min
Jul 3, 3:58 AM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	62 min
Jul 3, 4:22 AM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Stearns, Wright	48 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; radar from the NEXRAD Level II archive.