Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 30, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jun 5, 1999, 10:52 PM CDT for Fillmore County, Minnesota. It was in force for 53 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, 10:52 PM CDT (03:52 UTC)
- Expired
- Jun 5, 1999, 11:45 PM CDT
- In force
- 53 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
County Fillmore County, MN
The radar
The La Crosse radar (KARX), 74 km from the middle of the area, began a volume at 03:55 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, 11:20 PM CDT | Hail 1 | Rushford, 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, 9:45 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.9 hours before the alert went out and 178 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
- 1578 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 3:12 PM CDT, 7 hours 40 minutes earlier.
Area forecast discussion, Jun 5, 3:12 PM CDT, 7 hours 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LA CROSSE WI 312 PM CDT SAT JUN 5 1999 ALL EYES FOCUSED ON EXTREMELY VOLATILE SHORT TERM CONVECTIVE SITUATION. CAP IN RIGHT EXIT REGION OF STRONG 250 MB JET IS CURRENTLY PREVENTING RELEASE OF EXTREMELY HIGH SURFACE BASED CAPES. AT PRESENT...SEVERE THUNDERSTORM WATCH COVERS THE NORTHWESTERN THIRD OF THE ARX CWA. WATCHING A STRONG CONVERGENCE AREA ALIGNED NORTHEAST TO SOUTHWEST IN THE VICINITY OF THE TWIN CITIES. IF THE CAP DOES BREAK...IT LIKELY WILL DO SO HERE AND RELEASE CAPES IN EXCESS OF 5000 J/KG. THUS TORNADO WATCH IS WELL FOUNDED AND WILL WATCH CLOSELY THIS EVENING. OTHER MAIN FOCUS OF FORECAST IS PROGRESS OF 250 MB JET AND STRENGTHENING OF 850 MB LOW-LEVEL JET OVERNIGHT. DURING THE EARLY MORNING HOURS ON SUNDAY...MUCH OF FORECAST AREA ENTERS THE RIGHT ENTRANCE REGION OF THE JET WHICH IN CONCERT WITH STRONG LOW LEVEL MOISTURE CONVERGENCE SHOULD PROMOTE ANOTHER ROUND OF CONVECTION... POSSIBLY SEVERE...INTO SUNDAY. EXTENDED STILL LOOKING DRY INTO MIDWEEK WITH THE NEXT CHANCE OF SHOWERS OR THUNDERSTORMS LATE WENDESDAY NIGHT AND THURSDAY. CONTINUED WARM BUT TEMPS SLIGHTLY COOLER THURSDAY WITH NEXT SHORTWAVE SUPPRESSING HEIGHTS. .LSE...NONE. DEVOIR
In the hours before
Local storm report, Jun 5, 8:10 PM CDT, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
810 PM CDT SAT JUN 5 1999
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0655 PM JUMP RIVER WI WIND DAMAGE
06/05/99 TAYLOR SEVERAL TREES DOWN
0730 PM MEDFORD WI 1 INCH HAIL
06/05/99 TAYLOR
0738 PM MEDFORD WI WIND DAMAGE
06/05/99 TAYLOR MULTIPLE TREES AND UTILITY
LINES DOWN
RIECK/NELSON/BAUMGARDT/STANGELANDLocal storm report, Jun 5, 8:10 PM CDT, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
810 PM CDT SAT JUN 5 1999
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0655 PM JUMP RIVER WI WIND DAMAGE
06/05/99 TAYLOR SEVERAL TREES DOWN
0730 PM MEDFORD WI 1 INCH HAIL
06/05/99 TAYLOR
0738 PM MEDFORD WI WIND DAMAGE
06/05/99 TAYLOR MULTIPLE TREES AND UTILITY
LINES DOWN
RIECK/NELSON/BAUMGARDT/STANGELANDThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 9:24 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 36 min |
| Jun 6, 4:51 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 59 min |
| Jun 6, 5:31 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 64 min |
| Jun 5, 7:26 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 34 min |
| Jun 5, 9:52 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 68 min |
| Jun 5, 10:31 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 59 min |
| Jun 6, 3:02 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 63 min |
| Jun 6, 3:29 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 56 min |
| Jun 6, 5:18 PM CDT | Tornado Warning | ARX | Taylor | 17 min |
| Jun 6, 5:38 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 32 min |
| Jun 5, 8:58 PM CDT | Severe Thunderstorm Warning | ARX | Dodge, Mower | 62 min |
| Jun 5, 9:25 PM CDT | Severe Thunderstorm Warning | ARX | Olmsted | 65 min |
| Jun 5, 9:28 PM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 47 min |
| Jun 5, 9:55 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Mower | 65 min |
| Jun 5, 11:08 PM CDT | Severe Thunderstorm Warning | ARX | Winona | 62 min |
| Jun 5, 11:27 PM CDT | Severe Thunderstorm Warning | ARX | Houston | 63 min |
| Jun 6, 12:44 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 46 min |
| Jun 6, 5:12 PM CDT | Severe Thunderstorm Warning | ARX | Mower | 63 min |
| Jun 6, 5:21 PM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted | 64 min |
| Jun 6, 5:48 PM CDT | Severe Thunderstorm Warning | ARX | Wabasha, Winona | 62 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1999Every severe thunderstorm warning 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.