Alert archive / Michigan / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 36, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 23, 1999, 1:08 PM EDT for Gladwin County, Ogemaw County, Michigan. It was in force for 72 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 23, 1999, 1:08 PM EDT (17:08 UTC)
- Expired
- Jul 23, 1999, 2:20 PM EDT
- In force
- 72 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
Counties Gladwin County, MI, Ogemaw County, MI
The radar
The NCL Michigan radar (KAPX), 90 km from the middle of the area, began a volume at 17:08 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 23, 1:30 PM EDT | Thunderstorm Wind 50 | West Branch, MI | Several trees and power lines down. |
| Jul 23, 1:39 PM EDT | Thunderstorm Wind 50 | Gladwin, MI | Several trees and power lines 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 23, 10:30 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 5.1 hours before the alert went out and 174 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
- 28 J/kg
- Mixed-layer CIN
- -342 J/kg
- Mixed-layer LCL
- 1152 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Gaylord, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 5:37 AM EDT, 7 hours 31 minutes earlier.
Area forecast discussion, Jul 23, 5:37 AM EDT, 7 hours 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GAYLORD MI 537 AM EDT FRI JUL 23 1999 NEED QUICK UPDATE TO ACCOUNT FOR AREAS OF DENSE FOG IN NORTHWEST LOWER. SHOULD BURN OFF PRETTY QUICKLY THIS MORNING. .APX...NONE. FARINA
In the hours before
Special weather statement, Jul 23, 10:27 AM EDT, 2 hours 41 minutes before
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</html>Local storm report, Jul 23, 11:25 AM EDT, 1 hour 43 minutes before
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</html>Local storm report, Jul 23, 11:25 AM EDT, 1 hour 43 minutes before
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</html>Special weather statement, Jul 23, 12:37 PM EDT, 31 minutes before
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</html>Special weather statement, Jul 23, 12:37 PM EDT, 31 minutes before
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</html>Special weather statement, Jul 23, 12:37 PM EDT, 31 minutes before
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</html>The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 10:23 AM EDT | Severe Thunderstorm Warning | APX | Manistee | 62 min |
| Jul 23, 11:41 AM EDT | Severe Thunderstorm Warning | APX | Wexford | 59 min |
| Jul 23, 12:55 PM EDT | Severe Thunderstorm Warning | APX | Roscommon | 50 min |
| Jul 23, 1:41 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Iosco | 59 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1999Every severe thunderstorm warning in 1999
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.