Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 53, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Aug 3, 1997, 9:05 PM CDT for Aitkin County, Minnesota. It was in force for 55 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
- Aug 3, 1997, 9:05 PM CDT (02:05 UTC)
- Expired
- Aug 3, 1997, 10:00 PM CDT
- In force
- 55 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Aitkin County, MN
The radar
The Duluth radar (KDLH), 95 km from the middle of the area, began a volume at 02:08 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.1 hours before the alert went out and 196 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
- 1028 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1282 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
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 Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 2:30 PM CDT, 6 hours 35 minutes earlier.
Area forecast discussion, Aug 3, 2:30 PM CDT, 6 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 230 PM CDT SUN AUG 3 1997 SFC BNDRY GETTING HARD TO FIND DUE TO VRY WK PRESS GRDNT... BUT APPEARS TO XTND FRM NRN LWR MI TO NRN IA THEN NW TO SWRN ND. WV SATL LOOP SHOWS SUBSDC AND DRYING N OF THE BNDRY... ALTHO NE MN STILL A BIT UNTBL THIS AFTN WTH LI/S IN -2 TO -4 RANGE ON ADAP CHARTS. 88D SHOWS A FEW PESKY SHRA/TSRA RE-DVLPNG NW OF DLH... APPARENTLY ON SHALLOW SFC TROF ARCING FRM JUST W OF INL TO JUST W OF DLH. BUT DRYING/SUBSDC TREND SHUD CONT AS WRN U.S. RDG BUILDS THRU NXT 48 HRS. WK S/WV SLIDES DWN ACRS MN ARROWHEAD ERLY MON MRNG... BUT WILL HAVE LTL MOISTURE TO WORK WTH BY THEN... SO THIS FEATURE NOT XPCTD TO BE SGNFT. COULD BE JUST ENUF MID/HI CLDS ARND TONITE FOR A PTLY CLDY/MO CLR FCST. GUIDNC TEMPS IN LO TO MID 50S TONITE FOR MN ZONES LOOK RSNBL GIVEN DRYING TREND AND LGT/VRBL WNDS. MID TO UPR 50S FOR NW WI WHERE CLD CVR MAY BE A LTL MORE XTNSV. ERF
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 7:19 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 56 min |
| Aug 3, 7:45 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin | 60 min |
| Aug 3, 9:35 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 55 min |
| Aug 3, 7:30 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 60 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997
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.