Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 51, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 8, 2002, 12:50 AM CDT for Aitkin County, Pine County, Minnesota. It was in force for 55 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
- Jul 8, 2002, 12:50 AM CDT (05:50 UTC)
- Expired
- Jul 8, 2002, 1:45 AM CDT
- In force
- 55 min
- Issued by
- NWS Duluth, MN
- Area
- Counties, with a storm outline in the text
Counties Aitkin County, MN, Pine County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 8, 1:00 AM CDT | Thunderstorm Wind 50 E | Aitkin, MN | Trees were blown down. |
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
Minneapolis, MN (KMPX), launched 00:00Z, 5.8 hours before the alert went out and 173 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
- 2219 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1249 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
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 Jul 7, 9:10 PM CDT, 3 hours 40 minutes earlier.
Area forecast discussion, Jul 7, 9:10 PM CDT, 3 hours 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
910 PM CDT SUN JUL 7 2002
SFC FNT STRETCHES FROM LOW IN ERN SD TWD DLH. 925MB JET INTERSECTS
THE FNT WHERE TSTMS CONT TO FIRE IN W-C MN. THE 300 MB DVRGC FIELDS
LY ALONG THE FNT AS WELL. SO WE CAN EXPECT MILD TRAINING ALG THE FNT
INTO WRN LK SUPR AND EXTREME NWRN WI OVR NGT. OVR NRN MN WHERE
STRONG VORT CNTR IS, PCPN HAS BEEN DIMINISHING. IT COULD BE THAT
MSTR IS BEING ABDUCTED BY THE CNTRL MN CONVECTION. JUST THE SAME, A
FEW EPISODES OF MDT RAIN SHOW UP ON AWOS AND ASOS REPORTS. HOWEVER,
SRN DLH CWA S OF A LINE FROM BRD TO DLH TO ASX ARE STILL PRONE TO
REPEATED TSTMS. ANOTHER S/WV WILL SWING SEWD LATE TNGT AND MON MRNG
AND WILL ADD SOME ENERGY TO THE TSTMS AS IT ENTERS WI. KEY TO ENDING
PCPN IS THE DIV-Q FIELD. THE WRN PTN IN NWRN MN CORRESPONDS WELL
WITH THE CLEARING LINE. NO BIG CHANGES NEEDED ON ZONES EXCEPT TO
LOWER THE STRONG WORDING IN NRN MN. WELL KEEP THE FLOOD WATCH GOING
SINCE MUCH OF THE AREA HAS HAD LOCALIZED HEAVY RAIN OVER THE PAST
FEW DAYS AND WATER REMAINS HIGH ON SOME STREAMS.
.DLH...FLOOD WATCH ENTIRE CWA TNGT AND MON.
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009
CSThe office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:51 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 39 min |
| Jul 7, 10:26 PM CDT | Flash Flood Warning | DLH | Aitkin, Carlton, Cass, Crow Wing, Pine, Saint Louis | 6 hr |
| Jul 7, 10:49 PM CDT | Flash Flood Warning | DLH | Aitkin, Carlton, Cass, Crow Wing, Pine, Saint Louis | 5 hr |
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.