Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 184, NWS Twin Cities, MN

July 27, 2002Stevens County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 2002, 10:15 AM CDT for Stevens County, Minnesota. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 27, 2002, 10:15 AM CDT (15:15 UTC)
Expired
Jul 27, 2002, 10:45 AM CDT
In force
30 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Stevens County, MN

The radar

The Aberdeen radar (KABR), 189 km from the middle of the area, began a volume at 15:19 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

TimeReportWhereRemark
Jul 27, 10:22 AM CDTHail 0.75Donnelly, 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 3.3 hours before the alert went out and 206 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2002-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 941 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2002-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
941 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
856 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

640 
WUUS53 KMPX 271515
SVRMSP
MNC149-271545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1015 AM CDT SAT JUL 27 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STEVENS COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 1045 AM CDT

* AT 1015 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 3 MILES NORTHWEST OF ALBERTA...OR ABOUT 10
  MILES WEST OF MORRIS...MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ALBERTA.
  DONNELLY.
  MORRIS.

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

LAT...LON 4570 9614 4552 9614 4555 9578 4576 9578

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 11:20 AM CDTSevere Thunderstorm WarningMPXPope40 min
Jul 27, 12:02 PM CDTSevere Thunderstorm WarningMPXPope, Stearns43 min
Jul 27, 12:25 PM CDTSevere Thunderstorm WarningMPXMorrison50 min
Jul 27, 12:46 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns44 min
Jul 27, 12:56 PM CDTSevere Thunderstorm WarningMPXKandiyohi49 min
Jul 27, 1:10 PM CDTSevere Thunderstorm WarningMPXMille Lacs50 min
Jul 27, 1:15 PM CDTSevere Thunderstorm WarningMPXMorrison30 min
Jul 27, 1:30 PM CDTSevere Thunderstorm WarningMPXIsanti, Kanabec45 min
Jul 27, 1:35 PM CDTSevere Thunderstorm WarningMPXMeeker, Stearns40 min
Jul 27, 1:45 PM CDTSevere Thunderstorm WarningMPXKandiyohi45 min
Jul 27, 1:58 PM CDTSevere Thunderstorm WarningMPXWright47 min
Jul 27, 2:03 PM CDTSevere Thunderstorm WarningMPXChisago42 min
Jul 27, 2:17 PM CDTSevere Thunderstorm WarningMPXMeeker43 min
Jul 27, 3:40 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Wright50 min
Jul 27, 4:22 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington38 min
Jul 27, 6:33 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.