Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 103, NWS Aberdeen, SD

July 14, 1998Traverse County, Minnesota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 14, 1998, 8:29 PM CDT for Traverse County, Minnesota. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 14, 1998, 8:29 PM CDT (01:29 UTC)
Expired: Jul 14, 1998, 9:30 PM CDT
In force: 61 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Traverse County, MN

The radar

The Aberdeen radar (KABR), 155 km from the middle of the area, began a volume at 01:31 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, 4:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.5 hours before the alert went out and 179 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: 4358 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1271 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.0

Open this sounding in Storm Lab

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 Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 9:48 AM CDT, 10 hours 41 minutes earlier.

Area forecast discussion, Jul 14, 9:48 AM CDT, 10 hours 41 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTH CENTRAL/NORTHEAST SD
AND FOR TRAVERSE/BIG STONE COUNTIES OF MN
NATIONAL WEATHER SERVICE ABERDEEN SD
948 AM CDT TUE JUL 14 1998

COLD FRONT ACROSS WESTERN SD THIS MORNING WILL MOVE EAST INTO VERY
UNSTABLE AIRMASS ACROSS EAST RIVER COUNTIES IN THE ABR CWA. WITH DWPTS
IN THE LOWER TO MID 70S AND TEMPS RISING INTO THE 90S
...AIRMASS...ESPECIALLY ACROSS NE SD INTO WC MN WILL BECOME VERY
UNSTABLE WITH ABRS MODIFIED SOUNDING SHOWING CAPES WELL OVER 5000 J/KG.
WIND SHEAR IS NOT THAT GREAT...BUT WITH THIS KIND OF INSTABILITY...
SOME SEVERE THUNDERSTORMS COULD DEVELOP AS COLD FRONT MOVES EAST WITH
THE MAIN THREAT BEING DAMAGING WINDS AND LARGE HAIL. BELIEVE CA<P ABOVE
THE SURFACE WILL BE OVERCOME BY LIFT. WILL UPDATE FORECAST TO INCREASE
POPS EAST RIVER AND ADD POSSIBLY SEVERE. WILL LEAVE HIGHS AND WINDS
FORECAST PRETTY MUCH ALONE.

MOHR

In the hours before

Local storm report, Jul 14, 7:28 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT   .CORRECTED...
NATIONAL WEATHER SERVICE  ABERDEEN SD
728 PM CDT TUE JUL 14 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0710 PM    5 SE COLLIS               MN   1.75 INCH HAIL
07/14/98   TRAVERSE

END

Local storm report, Jul 14, 7:28 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  ABERDEEN SD
728 PM CDT TUE JUL 14 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0710 PM    5 SE COLLIS               SD   1.75 INCH HAIL
07/14/98   TRAVERSE

END

Local storm report, Jul 14, 7:28 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT   .CORRECTED...
NATIONAL WEATHER SERVICE  ABERDEEN SD
728 PM CDT TUE JUL 14 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0710 PM    5 SE COLLIS               MN   1.75 INCH HAIL
07/14/98   TRAVERSE

END

Local storm report, Jul 14, 7:34 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  ABERDEEN SD
734 PM CDT TUE JUL 14 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0725 PM    2 W JOHNSON               MN   0.75 INCH HAIL
07/14/98   BIG STONE

0730 PM    2 S JOHNSON               MN   1.25 INCH HAIL
07/14/98   BIG STONE

END

Local storm report, Jul 14, 7:45 PM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  ABERDEEN SD
745 PM CDT TUE JUL 14 1998

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0745 PM    4 E 2 N CLINTON           MN   2.75 INCH HAIL
07/14/98   BIG STONE

END

Local storm report, Jul 14, 7:55 PM CDT, 34 minutes before

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The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 7:59 PM CDT	Severe Thunderstorm Warning	ABR	Codington	61 min
Jul 14, 8:23 PM CDT	Severe Thunderstorm Warning	ABR	Grant	62 min
Jul 14, 8:54 PM CDT	Severe Thunderstorm Warning	ABR	Hamlin	61 min
Jul 14, 8:58 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel	62 min
Jul 14, 9:39 PM CDT	Tornado Warning	ABR	Deuel	66 min
Jul 14, 7:49 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	61 min
Jul 14, 8:52 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998 Every severe thunderstorm warning in 1998

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.