Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 56, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 25, 2002, 8:59 PM CDT for Itasca County, Koochiching County, Minnesota. It was in force for 46 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 25, 2002, 8:59 PM CDT (01:59 UTC)
- Expired
- Jul 25, 2002, 9:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
Counties Itasca County, MN, Koochiching County, MN
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 01:58 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
International Fa, MN (KINL), launched 00:00Z, 2.0 hours before the alert went out and 83 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
- 773 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1237 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
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 25, 2:30 PM CDT, 6 hours 29 minutes earlier.
Area forecast discussion, Jul 25, 2:30 PM CDT, 6 hours 29 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 230 PM CDT THU JUL 25 2002 USING A COMBINATION OF THE NEW ETA...OTHER OLD AND BACKUP MODEL RUNS...AND CURRENT TRENDS...IT LOOKS LIKE THE CLEARING/DRYING TREND IN CURRENT ZFP PKG IS STILL ON TRACK. WILL MAKE A FINAL CHECK JUST BEFORE PRESS TIME. UPR RDG STILL BUILDING INTO MIDWEST TNGT AND FRI...WITH THE RETURN OF AN ACTIVE ZONAL FLOW ALOFT...INCLUDING A RATHER STRONG S/WV...ON SAT. CURRENT ZFP SHOULD ONLY NEED SOME TWEAKING OF THE DETAILS. WITH THE AMT OF PRECIP RECEIVED SO FAR AND LIGHT WINDS/CLRG SKIES TNGT...WILL ADD MENTION OF FOG TO 1ST PD. NOT MUCH HAPPENING ON FRI. CU RULE VALUES SUGGEST LTL OR NO CU UNDER SFC RIDGE. WILL CONSIDER MOSUN INSTEAD OF PCLDY. WILL HAVE TO KEEP AN EYE ON SVR CHANCES ON SAT AS ETA PLACES JET MAX OVR SRN MN...WITH OUR SRN CWA UNDER THE LF QUAD. WITH SFC TROFING AND 500 MB S/WV MOVING ACROSS...MAY BUMP POPS UP A BIT FOR ENTIRE CWA. IT/S BEEN A LTL DIFFICULT GETTING MOS DATA TDA...BUT FROM A PEEK AT SOME ETA MOS AND THE FACT THAT THERE WILL BE NO BIG AIRMASS CHANGES NXT COUPLE OF DAYS AND ADVECTION PATTERNS WILL BE WEAK...DO NOT LOOK FOR ANY DRASTIC TEMP CHGS. CONSIDERING TDA/S UPSTREAM TEMPS AND WITH MORE SUNSHINE TMW...WE SHOULD REBOUND TO THE UPR 70S/LWR 80S...WITH LOWS STAYING IN THE 50S. .DLH...NONE. ERF
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 9:42 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching | 63 min |
| Jul 25, 10:25 PM CDT | Severe Thunderstorm Warning | DLH | Itasca | 65 min |
| Jul 25, 11:20 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching, Saint Louis | 40 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.