Alert archive / Michigan / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 45, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 28, 2002, 4:30 AM EDT for Ogemaw County, Michigan. It was in force for 15 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 28, 2002, 4:30 AM EDT (08:30 UTC)
- Expired
- Jul 28, 2002, 4:45 AM EDT
- In force
- 15 min
- Issued by
- NWS Gaylord, MI
- Area
- Counties, with a storm outline in the text
County Ogemaw County, MI
The radar
The NCL Michigan radar (KAPX), 95 km from the middle of the area, began a volume at 08:29 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 28, 4:35 AM EDT | Thunderstorm Wind 50 E | Prescott, MI | 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
Alpena, MI (KAPX), launched 00:00Z, 8.5 hours before the alert went out and 157 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
- 1426 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
127 WUUS53 KAPX 280830 SVRAPN MIC129-280845- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GAYLORD MI 430 AM EDT SUN JUL 28 2002 THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OGEMAW COUNTY IN NORTHEAST LOWER MICHIGAN * UNTIL 445 AM EDT * AT 429 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES NORTHWEST OF PRESCOTT...OR ABOUT 11 MILES NORTHEAST OF ALGER...MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL REACH... THE OGEMAW COUNTY BORDER AROUND 440 AM EDT REMAIN INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS STORM IS CAPABLE OF PRODUCING WIND GUSTS BETWEEN 60 AND 80 MPH ALONG WITH DIME SIZED OR LARGER HAIL. WINDS THIS HIGH CAN DOWN TREES AND POWER LINES. LAT...LON 4417 8406 4431 8409 4433 8388 4417 8388
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 2:17 AM EDT | Special Marine Warning | APX | 58 min | |
| Jul 28, 2:17 AM EDT | Special Marine Warning | APX | 58 min | |
| Jul 28, 4:05 AM EDT | Tornado Warning | APX | Ogemaw, Roscommon | 25 min |
| Jul 28, 4:40 AM EDT | Severe Thunderstorm Warning | APX | Iosco | 35 min |
| Jul 28, 4:52 AM EDT | Severe Thunderstorm Warning | APX | Arenac | 23 min |
| Jul 28, 4:55 AM EDT | Special Marine Warning | APX | 65 min | |
| Jul 28, 4:55 AM EDT | Special Marine Warning | APX | 65 min | |
| Jul 28, 5:02 AM EDT | Severe Thunderstorm Warning | APX | Arenac | 13 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.