Alert archive / Minnesota / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 511
The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2004, 12:45 PM CDT for 38 counties in Minnesota; Sargent County, North Dakota; 9 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2004, 12:45 PM CDT (17:45 UTC)
- Expired
- Jun 23, 2004, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 48 counties
Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Grant County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Waseca County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Sargent County, ND, Brookings County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Moody County, SD, Roberts County, SD
The radar
The Minneapolis radar (KMPX), 143 km from the middle of the area, began a volume at 17:49 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.
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 1:28 PM CDT | Severe Thunderstorm Warning | ABR | Traverse | 32 min |
| Jun 23, 1:39 PM CDT | Severe Thunderstorm Warning | ABR | Marshall | 21 min |
| Jun 23, 2:47 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker, Stearns | 43 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 5.8 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1508 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 231746
SEL1
SPC WW 231745
MNZ000-SDZ000-240000-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 511
NWS STORM PREDICTION CENTER NORMAN OK
1245 PM CDT WED JUN 23 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHWEST AND PART OF CENTRAL MINNESOTA
NORTHEAST SOUTH DAKOTA
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
700 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 55 MILES WEST NORTHWEST OF ALEXANDRIA
MINNESOTA TO 15 MILES SOUTHWEST OF FAIRMONT MINNESOTA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 510...
DISCUSSION...AIR MASS WILL CONTINUE TO UNDERGO MARGINAL TO MODERATE
DESTABILIZATION OVER WW...AHEAD OF STRONG SHORTWAVE TROUGH NOW
SHIFTING ACROSS ND. GIVEN STRENGTH OF LARGE SCALE ASCENT AND LARGE
VALUES OF SHEAR...ACTIVITY WILL HAVE THE POTENTIAL TO BECOME QUITE
ORGANIZED AND FORM INTO SMALL LINES AND SUPERCELLS. LARGE HAIL AND
DAMAGING WINDS EXPECTED TO BE PRIMARY SEVERE THREATS AS STORMS SHIFT
QUICKLY ESEWD INTO THE EARLY EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 30035.
...EVANS
460,0943 432,0925 432,0962 460,0981SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 10:17 AM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Becker, Beltrami, Benton, Carlton and 34 more | 118 min |
| Jun 23, 10:50 AM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 5 more | 5 hr |
| Jun 23, 12:17 PM CDT | Mesoscale Discussion | SPC | Big Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 29 more | 88 min |
| Jun 23, 1:24 PM CDT | Mesoscale Discussion | SPC | Becker, Cass, Crow Wing, Grant, Hubbard, Otter Tail and 2 more | 66 min |
| Jun 23, 3:45 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 23 more | 90 min |
| Jun 23, 4:05 PM CDT | Severe Thunderstorm Watch | SPC | Fillmore, Goodhue, Houston, Mower, Olmsted, Wabasha and 1 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2004Severe Thunderstorm Watches in South Dakota, 2004Severe Thunderstorm Watches in North Dakota, 2004Every severe thunderstorm watch in 2004
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.