Alert archive / Minnesota / Tornado Warnings in 1999

Tornado Warning 2, NWS Twin Cities, MN

June 5, 1999Washington County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 5, 1999, 4:12 PM CDT for Washington County, Minnesota. It was in force for 33 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: Jun 5, 1999, 4:12 PM CDT (21:12 UTC)
Expired: Jun 5, 1999, 4:45 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Washington County, MN

The radar

The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 21:12 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
Jun 5, 4:20 PM CDT	Hail 2.75	Forest Lake, MN

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
Jun 5, 2:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.2 hours before the alert went out and 60 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: 358 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 1247 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

800 
WFUS1 KMSP 052113 RRA
TORMSP
MNC163-052145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
412 PM CDT SAT JUN 5 1999

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

* TORNADO WARNING FOR...
  NORTHERN AND CENTRAL WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 445 PM CDT

* AT 411 PM CDT...LAW ENFORCEMENT REPORTED A FUNNEL CLOUD NEAR
  MAHTOMEDI...OR ABOUT 15 MILES NORTHEAST OF ST PAUL.  THE STORM WAS
  MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED
  MAHTOMEDI
  DELLWOOD
  HUGO
  MARINE ON ST CROIX


GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR
TDK


&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 2:13 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	47 min
Jun 5, 3:02 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	28 min
Jun 5, 3:36 AM CDT	Severe Thunderstorm Warning	MPX	Stearns	54 min
Jun 5, 4:18 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	42 min
Jun 5, 3:34 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Ramsey, Washington	46 min
Jun 5, 4:12 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	33 min
Jun 5, 4:15 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	65 min
Jun 5, 4:18 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey	62 min
Jun 5, 4:27 PM CDT	Tornado Warning	MPX	Carver, Scott	33 min
Jun 5, 4:44 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	61 min
Jun 5, 4:50 PM CDT	Severe Thunderstorm Warning	MPX	Washington	40 min
Jun 5, 5:17 PM CDT	Severe Thunderstorm Warning	MPX	Scott	28 min
Jun 5, 5:47 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	28 min

Nearby

Tornado Warnings in Minnesota, 1999 Every tornado warning in 1999 Tornadoes 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.