Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 104, NWS Twin Cities, MN

July 14, 2003Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 14, 2003, 7:20 PM CDT for Sibley County, Minnesota. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 14, 2003, 7:20 PM CDT (00:20 UTC)
Expired: Jul 14, 2003, 7:45 PM CDT
In force: 25 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Sibley County, MN

The radar

The Minneapolis radar (KMPX), 42 km from the middle of the area, began a volume at 00:23 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
Jul 14, 5:25 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.3 hours before the alert went out and 40 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: 438 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 357 m²/s²
0-3 km storm-relative helicity: 466 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

778 
WUUS53 KMPX 150020
SVRMPX
MNC143-150045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
720 PM CDT MON JUL 14 2003

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SIBLEY COUNTY IN CENTRAL MINNESOTA

* UNTIL 745 PM CDT

* AT 720 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 3 MILES WEST OF GREEN ISLE...OR ABOUT 21
  MILES SOUTHEAST OF HUTCHINSON...MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ARLINGTON.
  GREEN ISLE.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 4472 9407 4461 9417 4453 9399 4466 9381

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 7:09 PM CDT	Tornado Warning	MPX	Washington	36 min
Jul 14, 7:12 PM CDT	Tornado Warning	MPX	Brown	33 min
Jul 14, 7:37 PM CDT	Tornado Warning	MPX	Blue Earth	38 min
Jul 14, 7:54 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	51 min
Jul 14, 7:59 PM CDT	Tornado Warning	MPX	Le Sueur	31 min
Jul 14, 8:05 PM CDT	Tornado Warning	MPX	Nicollet	25 min
Jul 14, 8:13 PM CDT	Tornado Warning	MPX	Blue Earth	32 min
Jul 14, 8:27 PM CDT	Tornado Warning	MPX	Le Sueur	33 min
Jul 14, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Rice	46 min
Jul 14, 8:44 PM CDT	Tornado Warning	MPX	Blue Earth, Waseca	46 min
Jul 14, 9:04 PM CDT	Tornado Warning	MPX	Faribault	41 min
Jul 14, 9:19 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele	41 min
Jul 14, 9:42 PM CDT	Tornado Warning	MPX	Freeborn	33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2003 Every severe thunderstorm warning in 2003

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.