Alert archive / Michigan / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 80, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 14, 1998, 5:29 PM EDT for Bay County, Michigan. It was in force for 46 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
- Jul 14, 1998, 5:29 PM EDT (21:29 UTC)
- Expired
- Jul 14, 1998, 6:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Bay County, MI
The radar
The Detroit radar (KDTX), 120 km from the middle of the area, began a volume at 21:29 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 14, 6:10 PM EDT | Thunderstorm Wind 51 | Bay City, 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 12:00Z, 9.5 hours before the alert went out and 119 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1507 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- -3 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.
In the hours before
Special weather statement, Jul 14, 2:38 PM EDT, 2 hours 51 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-151200- SEVERE WEATHER OUTLOOK FOR SOUTHEAST LOWER MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 238 PM EDT TUE JUL 14 1998 ...SEVERE WEATHER POTENTIAL STATEMENT FOR SOUTHEAST MICHIGAN... DISPATCHERS... PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE SAGINAW VALLEY AND THUMB AREA THIS AFTERNOON AND EVENING. A FEW THUNDERSTORMS MAY BECOME SEVERE...HOWEVER...SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. THE SCATTERED THUNDERSTORMS ARE DEVELOPING ALONG A WEAK FRONT OVER CENTRAL LOWER MICHIGAN. TEMPERATURES HAVE RISEN INTO THE LOWER 90S AND DEW POINTS ARE AROUND 70 DEGREES. THIS HAS MADE THE ATMOSPHERE VERY UNSTABLE. THE THUNDERSTORMS WILL MOVE TO THE SOUTHEAST AT 15 MILES AN HOUR. THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING WINDS UP TO 60 MILES AN HOUR AND HAIL UP TO 3/4 INCH IN DIAMETER. STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO OR YOUR LOCAL CABLE TELEVISION STATIONS FOR THE LATEST WEATHER INFORMATION. BOYNE
Special weather statement, Jul 14, 2:38 PM EDT, 2 hours 51 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-151200- SEVERE WEATHER OUTLOOK FOR SOUTHEAST LOWER MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 238 PM EDT TUE JUL 14 1998 ...SEVERE WEATHER POTENTIAL STATEMENT FOR SOUTHEAST MICHIGAN... DISPATCHERS... PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE SAGINAW VALLEY AND THUMB AREA THIS AFTERNOON AND EVENING. A FEW THUNDERSTORMS MAY BECOME SEVERE...HOWEVER...SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. THE SCATTERED THUNDERSTORMS ARE DEVELOPING ALONG A WEAK FRONT OVER CENTRAL LOWER MICHIGAN. TEMPERATURES HAVE RISEN INTO THE LOWER 90S AND DEW POINTS ARE AROUND 70 DEGREES. THIS HAS MADE THE ATMOSPHERE VERY UNSTABLE. THE THUNDERSTORMS WILL MOVE TO THE SOUTHEAST AT 15 MILES AN HOUR. THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING WINDS UP TO 60 MILES AN HOUR AND HAIL UP TO 3/4 INCH IN DIAMETER. STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO OR YOUR LOCAL CABLE TELEVISION STATIONS FOR THE LATEST WEATHER INFORMATION. BOYNE
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 2:36 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 64 min |
| Jul 14, 5:34 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 56 min |
| Jul 14, 6:01 PM EDT | Flash Flood Warning | DTX | Saginaw | 3 hr |
| Jul 14, 6:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 30 min |
| Jul 14, 6:55 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 50 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1998Every severe thunderstorm warning in 1998
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.