Alert archive / Michigan / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 38, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 21, 2002, 6:29 AM EDT for Antrim County, Charlevoix County, Leelanau County, Michigan. It was in force for 31 min. 2 reports 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 21, 2002, 6:29 AM EDT (10:29 UTC)
- Expired
- Jul 21, 2002, 7:00 AM EDT
- In force
- 31 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
Counties Antrim County, MI, Charlevoix County, MI, Leelanau County, MI
The radar
The NCL Michigan radar (KAPX), 66 km from the middle of the area, began a volume at 10:30 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 |
|---|---|---|---|
| Jul 21, 6:45 AM EDT | Thunderstorm Wind 50 E | Elk Rapids, MI | Scattered trees and power lines down. |
| Jul 21, 6:55 AM EDT | Thunderstorm Wind 50 E | Charlevoix, MI | Numerous 12-15 inch trees 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 10.5 hours before the alert went out and 219 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
- 1072 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1086 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
916 WUUS53 KAPX 211029 SVRAPN MIC009-029-089-211100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GAYLORD MI 628 AM EDT SUN JUL 21 2002 THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ANTRIM COUNTY IN NORTHWEST LOWER MICHIGAN CHARLEVOIX COUNTY IN NORTHWEST LOWER MICHIGAN LEELANAU COUNTY IN NORTHWEST LOWER MICHIGAN * UNTIL 700 AM EDT * AT 625 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 20 MILES NORTHWEST OF FISHERMANS ISLAND STATE PARK TO 20 MILES NORTHWEST OF LELAND...MOVING SOUTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORMS WILL REACH... CHARLEVOIX AROUND 640 AM EDT ELK RAPIDS AND SUTTONS BAY AROUND 645 AM EDT REMAIN INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS STORM IS CAPABLE OF PRODUCING WIND GUSTS AROUND 60 MPH. WINDS THIS HIGH CAN DOWN TREES AND POWER LINES.
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:00 AM EDT | Special Marine Warning | APX | 90 min | |
| Jul 21, 6:00 AM EDT | Special Marine Warning | APX | 90 min | |
| Jul 21, 6:00 AM EDT | Special Marine Warning | APX | 90 min | |
| Jul 21, 7:54 AM EDT | Severe Thunderstorm Warning | APX | Kalkaska | 51 min |
| Jul 21, 8:55 AM EDT | Special Marine Warning | APX | 65 min | |
| Jul 21, 8:55 AM EDT | Special Marine Warning | APX | 65 min | |
| Jul 21, 12:58 PM EDT | Special Marine Warning | APX | 22 min | |
| Jul 21, 3:11 PM EDT | Severe Thunderstorm Warning | APX | Alpena | 34 min |
| Jul 21, 7:33 PM EDT | Special Marine Warning | APX | 87 min | |
| Jul 21, 7:33 PM EDT | Special Marine Warning | APX | 87 min | |
| Jul 21, 7:39 PM EDT | Severe Thunderstorm Warning | APX | Mackinac | 51 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 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; radar from the NEXRAD Level II archive.