Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 201, NWS Twin Cities, MN

July 27, 2002Ramsey County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 2002, 4:22 PM CDT for Ramsey County, Washington County, Minnesota. It was in force for 38 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 27, 2002, 4:22 PM CDT (21:22 UTC)
Expired: Jul 27, 2002, 5:00 PM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Ramsey County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 48 km from the middle of the area, began a volume at 21:24 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 27, 12:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.4 hours before the alert went out and 51 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: 485 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

467 
WUUS53 KMPX 272122
SVRMSP
MNC123-163-272200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
421 PM CDT SAT JUL 27 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 500 PM CDT

* AT 421 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM OVER
  ROSEVILLE...OR ABOUT 6 MILES NORTH OF ST PAUL...MOVING EAST AT     
  40 MPH. DIME SIZE HAIL WAS REPORTED AT CRYSTAL AT 420 PM WITH      
  NICKEL SIZE HAIL REPORTED IN NEW HOPE AT 414 PM. 

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  MAPLEWOOD.
  ROSEVILLE.
  ST PAUL.
  STILLWATER.

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.

LAT...LON 4513 9319 4492 9319 4489 9278 4517 9276

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 10:15 AM CDT	Severe Thunderstorm Warning	MPX	Stevens	30 min
Jul 27, 11:20 AM CDT	Severe Thunderstorm Warning	MPX	Pope	40 min
Jul 27, 12:02 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	43 min
Jul 27, 12:25 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	50 min
Jul 27, 12:46 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Stearns	44 min
Jul 27, 12:56 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	49 min
Jul 27, 1:10 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs	50 min
Jul 27, 1:15 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	30 min
Jul 27, 1:30 PM CDT	Severe Thunderstorm Warning	MPX	Isanti, Kanabec	45 min
Jul 27, 1:35 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Stearns	40 min
Jul 27, 1:45 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	45 min
Jul 27, 1:58 PM CDT	Severe Thunderstorm Warning	MPX	Wright	47 min
Jul 27, 2:03 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	42 min
Jul 27, 2:17 PM CDT	Severe Thunderstorm Warning	MPX	Meeker	43 min
Jul 27, 3:40 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Wright	50 min
Jul 27, 6:33 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002 Every severe thunderstorm warning in 2002

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.