Alert archive / Michigan / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 41, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 14, 1997, 7:52 PM EDT for Macomb County, Michigan. It was in force for 38 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 14, 1997, 7:52 PM EDT (23:52 UTC)
- Expired
- Jul 14, 1997, 8:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Macomb County, MI
The radar
The Detroit radar (KDTX), 46 km from the middle of the area, began a volume at 23:54 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, 7:56 PM EDT | Thunderstorm Wind 50 | East Detroit, MI | |
| Jul 14, 8:00 PM EDT | Thunderstorm Wind 55 | St Clair Shrs, 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, 11.9 hours before the alert went out and 43 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
- 1404 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -47 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, 4:55 PM EDT, 2 hours 57 minutes before
MIZ047-048-053-060-142130- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 445 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH #605 IN EFFECT UNTIL 10 PM EDT FOR BAY... MIDLAND...SAGINAW AND SHIAWASSEE COUNTIES... AT 440 PM A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDED SOUTHWEST FROM ALLEGAN COUNTY...WHICH IS JUST SOUTHWEST OF GRAND RAPIDS...INTO INDIANA. THIS LINE OF STORMS WAS MOVING TO THE NORTHEAST AT 30 MILES PER HOUR AND SHOULD BEGIN TO AFFECT MIDLAND...SAGINAW AND SHIAWASSEE COUNTIES BY 630 PM AND BAY COUNTY BY 7 PM. THERE WAS AN ISOLATED THUNDERSTORM OVER NORTHERN MONTCALM COUNTY THAT COULD AFFECT MIDLAND COUNTY BY 530 PM. THIS STORM WAS NOT SEVERE AS OF 440 PM. SOME THUNDERSTORMS THIS EVENING COULD PRODUCE ONE AND THREE QUARTER INCH SIZE HAIL AND WIND GUSTS TO 70 MPH. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT TO FURTHER WEATHER STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
Special weather statement, Jul 14, 6:00 PM EDT, 1 hour 52 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-142130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 6 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH 605 IN EFFECT UNTIL 10 PM EDT FOR ALL OF SOUTHEAST LOWER MICHIGAN... AT 555 PM...WEATHER SERVICE RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM HOWARD CITY...WHICH IS NORTH OF GRAND RAPIDS...EAST TO INONIA AND THEN SOUTHWEST THROUGH BATTLE CREEK AND KALAMAZOO INTO INDIANA. THE LINE OF STORMS WAS MOVING EAST AT 20 MPH WHILE THE INDIVIDUAL STORMS MOVED NORTHEAST AT 30 MPH. THESE STORMS SHOULD REACH OWOSSO...HOWELL AND ANN ARBOR AROUND 7 PM AND THE TRI-CITIES...FLINT...PONTIAC AND DETROIT BY 8 PM. THESE STORMS CAN PRODUCE THREE QUARTER INCH SIZE HAIL...WIND GUSTS TO 70 MPH AND TORRENTIAL RAIN. SOME OF THESE STORMS HAVE A HISTORY OF DOWNING TREES AND POWERLINES IN SOUTHWESTERN LOWER MICHIGAN ALONG WITH TORRENTIAL RAIN. OTHER SCATTERED STRONG THUNDESTORMS WERE OCCURRING ACROSS THE THUMB AREA. THESE STORMS WERE MOVING NORTHEAST AT 20 MPH AND WERE PRODUCING HEAVY RAIN AND WIND GUSTS TO 40 MPH. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT FOR FURTHER WEATHER STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
Special weather statement, Jul 14, 6:04 PM EDT, 1 hour 48 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-142130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 6 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH #605 IN EFFECT UNTIL 10 PM EDT FOR ALL OF SOUTHEAST LOWER MICHIGAN... AT 555 PM...WEATHER SERVICE RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM HOWARD CITY...WHICH IS NORTH OF GRAND RAPIDS...EAST TO INONIA AND THEN SOUTHWEST THROUGH BATTLE CREEK AND KALAMAZOO INTO INDIANA. THE LINE OF STORMS WAS MOVING EAST AT 20 MPH WHILE THE INDIVIDUAL STORMS MOVED NORTHEAST AT 30 MPH. THESE STORMS SHOULD REACH OWOSSO...HOWELL AND ANN ARBOR AROUND 7 PM AND THE TRI-CITIES...FLINT...PONTIAC AND DETROIT BY 8 PM. THESE STORMS CAN PRODUCE THREE QUARTER INCH SIZE HAIL...WIND GUSTS TO 70 MPH AND TORRENTIAL RAIN. SOME OF THESE STORMS HAVE A HISTORY OF DOWNING TREES AND POWERLINES IN SOUTHWESTERN LOWER MICHIGAN ALONG WITH TORRENTIAL RAIN. OTHER SCATTERED STRONG THUNDESTORMS WERE OCCURRING ACROSS THE THUMB AREA. THESE STORMS WERE MOVING NORTHEAST AT 20 MPH AND WERE PRODUCING HEAVY RAIN AND WIND GUSTS TO 40 MPH. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT FOR FURTHER WEATHER STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
Special weather statement, Jul 14, 6:11 PM EDT, 1 hour 41 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-142300- SPECIAL WEATHER STATEMENT...CORRECTION TO EXIPRATION TIME NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 6 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH #605 IN EFFECT UNTIL 10 PM EDT FOR ALL OF SOUTHEAST LOWER MICHIGAN... AT 555 PM...WEATHER SERVICE RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM HOWARD CITY...WHICH IS NORTH OF GRAND RAPIDS...EAST TO INONIA AND THEN SOUTHWEST THROUGH BATTLE CREEK AND KALAMAZOO INTO INDIANA. THE LINE OF STORMS WAS MOVING EAST AT 20 MPH WHILE THE INDIVIDUAL STORMS MOVED NORTHEAST AT 30 MPH. THESE STORMS SHOULD REACH OWOSSO...HOWELL AND ANN ARBOR AROUND 7 PM AND THE TRI-CITIES...FLINT...PONTIAC AND DETROIT BY 8 PM. THESE STORMS CAN PRODUCE THREE QUARTER INCH SIZE HAIL...WIND GUSTS TO 70 MPH AND TORRENTIAL RAIN. SOME OF THESE STORMS HAVE A HISTORY OF DOWNING TREES AND POWERLINES IN SOUTHWESTERN LOWER MICHIGAN ALONG WITH TORRENTIAL RAIN. OTHER SCATTERED STRONG THUNDESTORMS WERE OCCURRING ACROSS THE THUMB AREA. THESE STORMS WERE MOVING NORTHEAST AT 20 MPH AND WERE PRODUCING HEAVY RAIN AND WIND GUSTS TO 40 MPH. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT FOR FURTHER WEATHER STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
Special weather statement, Jul 14, 7:00 PM EDT, 52 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-150000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 7 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH 605 IN EFFECT UNTIL 10 PM EDT FOR ALL OF SOUTHEAST LOWER MICHIGAN... AT 655 PM...WEATHER SERVICE RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM SOUTHERN MIDLAND COUNTY SOUTHWEST TO JUST EAST OF LANSING AND CONTINUING THROUGH JACKSON INTO NORTHEAST INDIANA. THIS LINE OF STORMS WAS MOVING EAST AT 25 MPH WHILE THE INDIVIDUAL STORMS MOVED NORTHEAST AT 30 MPH. THESE STORMS WILL REACH THE TRI-CITY AREAS...FLINT AND HOWELL BY 730 PM ...AND PONTIAC...ANN ARBOR AND ADRIAN BY 8 PM...AND THE DETROIT AREA BY 830 PM. THESE STORMS HAVE PRODUCED DAMAGING WINDS TO 70 MPH...LARGE HAIL UP TO ONE INCH IN DIAMETER ALONG WITH TORRENTIAL RAINS ACROSS SOUTHWEST AND CENTRAL LOWER MICHIGAN. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT FOR FURTHER WEATHER STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
Special weather statement, Jul 14, 7:04 PM EDT, 48 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-150000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 7 PM EDT MON JUL 14 1997 ...SEVERE THUNDERSTORM WATCH #605 IN EFFECT UNTIL 10 PM EDT FOR ALL OF SOUTHEAST LOWER MICHIGAN... AT 655 PM...WEATHER SERVICE RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM SOUTHERN MIDLAND COUNTY SOUTHWEST TO JUST EAST OF LANSING AND CONTINUING THROUGH JACKSON INTO NORTHEAST INDIANA. THIS LINE OF STORMS WAS MOVING EAST AT 25 MPH WHILE THE INDIVIDUAL STORMS MOVED NORTHEAST AT 30 MPH. THESE STORMS WILL REACH THE TRI-CITY AREAS...FLINT AND HOWELL BY 730 PM ...AND PONTIAC...ANN ARBOR AND ADRIAN BY 8 PM...AND THE DETROIT AREA BY 830 PM. THESE STORMS HAVE PRODUCED DAMAGING WINDS TO 70 MPH...LARGE HAIL UP TO ONE INCH IN DIAMETER ALONG WITH TORRENTIAL RAINS ACROSS SOUTHWEST AND CENTRAL LOWER MICHIGAN. PERSONS IN THE WATCH AREA SHOULD KEEP ALERT FOR FURTHER WEATHER> STATEMENTS AND POSSIBLE WARNINGS AND BE PREPARED TO TAKE COVER IF NECESSARY. DRC
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:54 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 51 min |
| Jul 14, 7:05 PM EDT | Severe Thunderstorm Warning | DTX | Midland, Saginaw | 55 min |
| Jul 14, 7:25 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 50 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1997Every severe thunderstorm warning in 1997
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.