Alert archive / Michigan / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 17, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jun 10, 1999, 10:20 PM EDT for Gladwin County, Michigan. It was in force for 40 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
- Jun 10, 1999, 10:20 PM EDT (02:20 UTC)
- Expired
- Jun 10, 1999, 11:00 PM EDT
- In force
- 40 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Gladwin County, MI
The radar
The NCL Michigan radar (KAPX), 105 km from the middle of the area, began a volume at 02:24 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 |
|---|---|---|---|
| Jun 10, 10:32 PM EDT | Thunderstorm Wind 65 | Beaverton, MI |
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
Detroit, MI (KDTX), launched 00:00Z, 2.3 hours before the alert went out and 161 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
- 932 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- -8 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 Jun 10, 10:10 PM EDT, 10 minutes earlier.
Area forecast discussion, Jun 10, 10:10 PM EDT, 10 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GAYLORD MI 1010 PM EDT THU JUN 10 1999 QUICK FORECAST UPDATE FORTHCOMING...JUST SOME MINOR ADJUSTMENTS ANTICIPATED ATTM. BAND OF SHOWERS/THUNDERSTORMS MOVING THROUGH LAKE MICHIGAN ABOUT TO ENCOUNTER THE ONLY UNTAPPED AIR MASS LEFT OVER THE AREA...MODIFIED 00Z APX SOUNDING FOR CURRENT CONDITIONS AT TVC/MBL STILL YIELDS CAPES OVER 2000 J/KG. SO EXPECT SOME ADDITIONAL DEVELOPMENT OVER NORTHWEST LOWER AS OUTFLOW FROM APPROACHING CONVECTION ENCOUNTERS INSTABILITY...WITH ACTIVITY EXPECTED TO SPILL INTO EASTERN UPPER AS WELL. ADDITIONAL PRECIPITATION OVER NORTHEAST LOWER SHOULD BE MORE SPOTTY AS AIR MASS HAS STABILIZED WITH EARLIER CONVECTION/LOSS OF HEATING...AND OVERNIGHT FORCING RATHER MINIMAL FOR ELEVATED CONVECTION. WILL TAKE A LOOK AT 02Z OBS BEFORE MAKING ANY TEMPERATURE ADJUSTMENTS. .APX...NONE. JPB
In the hours before
Local storm report, Jun 10, 6:14 PM EDT, 4 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
614 PM EDT THU JUN 10 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0510 PM 7 W LACHINE MI WIND DAMAGE
06/10/99 ALPENA TREES UPOOTEDLocal storm report, Jun 10, 6:14 PM EDT, 4 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
614 PM EDT THU JUN 10 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0510 PM 7 W LACHINE MI WIND DAMAGE
06/10/99 ALPENA TREES UPOOTEDLocal storm report, Jun 10, 10:18 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
1018 PM EDT THU JUN 10 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0835 P"M GLADWIN MI .75 INCH HAIL
06/10/99 GLADWIN REPORTED BY SPOTTER
0835 PM GLADWIN MI 50 MPH TSTM GUST
06/10/99 GLADWIN REPORTED BY SPOTTERLocal storm report, Jun 10, 10:18 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
1018 PM EDT THU JUN 10 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0835 P"M GLADWIN MI .75 INCH HAIL
06/10/99 GLADWIN REPORTED BY SPOTTER
0835 PM GLADWIN MI 50 MPH TSTM GUST
06/10/99 GLADWIN REPORTED BY SPOTTERThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 11:16 PM EDT | Flash Flood Warning | APX | Gladwin | 4 hr |
| Jun 11, 4:23 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 47 min |
| Jun 11, 5:11 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 29 min |
| Jun 11, 6:47 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw | 63 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.