Alert archive / Michigan / Flash Flood Warnings in 1997
Flash Flood Warning 8, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at Jun 21, 1997, 6:04 PM EDT for Genesee County, Lapeer County, Michigan. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 21, 1997, 6:04 PM EDT (22:04 UTC)
- Expired
- Jun 21, 1997, 8:05 PM EDT
- In force
- 2 hr
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
Counties Genesee County, MI, Lapeer County, MI
The radar
The Detroit radar (KDTX), 40 km from the middle of the area, began a volume at 22:05 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.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 10.1 hours before the alert went out and 37 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
- 801 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDTX 212204
FFWDTX
MIC049-087-220005-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
604 PM EDT SAT JUN 21 1997
* FLASH FLOOD WARNING FOR
GENESEE COUNTY - SOUTHEASTERN LOWER MICHIGAN
LAPEER COUNTY - SOUTHEASTERN LOWER MICHIGAN
* FLASH FLOOD WARNING UNTIL 805 PM EDT
* SOME AREAS AFFECTED
FLINT
LAPEER
DAVISON
NORTH BRANCH
* CAUSE AND EFFECT
A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE ACROSS
GENESEE AND LAPEER COUNTIES THROUGH 7 PM. THE STORMS ARE
ACCOMPANIED BY BRIEF BURSTS OF VERY HEAVY RAIN...WITH AMOUNTS
OF 1 TO 1.5 INCHES IN LESS THAN AN HOUR. ROAD FLOODING HAS
BEEN REPORTED ACROSS PORTIONS OF GENESEE COUNTY THROUGH 6 PM.
* FORECAST CONDITIONS
THE STORMS WILL BE EAST OF GENESEE AND LAPEER COUNTIES
SHORTLY AFTER 7 PM.
RESIDENTS OF GENESEE AND LAPEER COUNTIES SHOULD USE CAUTION WHILE
TRAVELING TONIGHT...AS SOME ShECONDARY ROADS AND LOW-LYING AREAS MAY
BE COVERED BY FLOODWATERS.
MSE&What forecasters said that day
The local office's own words before this flash flood 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, Jun 21, 12:05 PM EDT, 5 hours 59 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-221200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1205 PM EDT SAT JUN 21 1997 ...SEVERE WEATHER POTENTIAL STATEMENT FOR SOUTHEAST LOWER MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND WILL THEN BE SCATTERED ACROSS THE REGION INTO THE EVENING. THERE IS A SLIGHT RISK THAT SOME THUNDERSTORMS MAY REACH SEVERE THRESHOLDS...WITH WIND GUSTS OF 60 MPH AND HAIL WITH DIAMETER OF 3/4 OF AN INCH OR GREATER. WITH WARM HUMID AIR IN PLACE...LIMITED SUNSHINE WILL HELP TO DESTABILIZE THE ATMOSPHERE THIS AFTERNOON. THUNDERSTORMS WILL LIKELY DEVELOP...MAINLY AFTER 3 PM...AN WILL THEN BE SCATTERED ACROSS THE REGION. THE THUNDERSTORM ACTIVITY WILL THEN GRADUALLY WIND DOWN AFTER SUNSET...FIRST OVER THE THUMB AND TRI-CITIES AREAS BY THIS EVENING... AND THEN PROGRESSIVELY FURTHER SOUTH ACROSS THE REGION EARLY TONIGHT. ANY THUNDERSTORMS THAT DO DEVELOP WILL CONTAIN HEAVY DOWNPOURS OF RAIN AND WIND GUSTS OVER 30 MPH. THE POTENTIAL DOES EXIST FOR ISOLATED SEVERE THUNDERSTORMS...WITH WIND GUSTS TO 60 MPH...AND HAIL 3/4 INCH OR GREATER IN DIAMETER. THE THUNDERSTORMS WILL TEND TO MOVE TOWARD THE NORTHEAST AT 25 MPH. STAY TUNED FOR THE LATEST WEATHER INFORMATION CONCERNING THUNDERSTORM POTENTIAL IN SOUTHEAST LOWER MICHIGAN FOR THIS AFTERNOON AND THIS EVENING. REILLY
Special weather statement, Jun 21, 12:06 PM EDT, 5 hours 58 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-221200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1205 PM EDT SAT JUN 21 1997 ...SEVERE WEATHER POTENTIAL STATEMENT FOR SOUTHEAST LOWER MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND WILL THEN BE SCATTERED ACROSS THE REGION INTO THE EVENING. THERE IS A SLIGHT RISK THAT SOME THUNDERSTORMS MAY REACH SEVERE THRESHOLDS...WITH WIND GUSTS OF 60 MPH AND HAIL WITH DIAMETER OF 3/4 OF AN INCH OR GREATER. WITH WARM HUMID AIR IN PLACE...LIMITED SUNSHINE WILL HELP TO DESTABILIZE THE ATMOSPHERE THIS AFTERNOON. THUNDERSTORMS WILL LIKELY DEVELOP...MAINLY AFTER 3 PM...AN WILL THEN BE SCATTERED ACROSS THE REGION. THE THUNDERSTORM ACTIVITY WILL THEN GRADUALLY WIND DOWN AFTER SUNSET...FIRST OVER THE THUMB AND TRI-CITIES AREAS BY THIS EVENING... AND THEN PROGRESSIVELY FURTHER SOUTH ACROSS THE REGION EARLY TONIGHT. ANY THUNDERSTORMS THAT DO DEVELOP WILL CONTAIN HEAVY DOWNPOURS OF RAIN AND WIND GUSTS OVER 30 MPH. THE POTENTIAL DOES EXIST FOR ISOLATED SEVERE THUNDERSTORMS...WITH WIND GUSTS TO 60 MPH...AND HAIL 3/4 INCH OR GREATElR IN DIAMETER. THE THUNDERSTORMS WILL TEND TO MOVE TOWARD THE NORTHEAST AT 25 MPH. STAY TUNED FOR THE LATEST WEATHER INFORMATION CONCERNING THUNDERSTORM POTENTIAL IN SOUTHEAST LOWER MICHIGAN FOR THIS AFTERNOON AND THIS EVENING. REILLY
Special weather statement, Jun 21, 4:18 PM EDT, 1 hour 46 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-220100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 420 PM EDT SAT JUN 21 1997 ...TORNADO WATCH NUMBER 498 HAS BEEN ISSUED FOR ALL OF SOUTHEAST MICHIGAN UNTIL 9 PM... TORNADO WATCH 498 HAS BEEN ISSUED FOR ALL OF SOUTHEAST MICHIGAN UNTIL 9 PM. COMMUNITIES IN THE WATCH INCLUDE MIDLAND... BAD AXE... SAGINAW... FLINT... PORT HURON... HOWELL... PONTIAC... MT CLEMENS... ANN ARBOR... DETROIT... AND MONROE. AT 4 PM... A LINE OF STRONG THUNDERSTORMS EXTENDED FROM SAGINAW BAY SOUTHWEST TO JUST WEST OF KALAMAZOO. THESE STORMS WERE MOVING TO THE EAST NORTHEAST AT 35 MILES AN HOUR. SOME OF THESE THUNDERSTORMS COULD PRODUCE TORNADOES... LARGE HAIL... AND WIND GUSTS OVER 60 MILES AN HOUR. IF YOU ARE IN SOUTHEAST MICHIGAN THIS AFTERNOON AND EVENING... BE ALERT FOR SEVERE WEATHER. IF YOU SEE THEATENING WEATHER APPROACH... MOVE QUICKLY TO SHELTER. KEYES
Special weather statement, Jun 21, 4:20 PM EDT, 1 hour 44 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-220100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 420 PM EDT SAT JUN 21 1997 ...TORNADO WATCH NUMBER 498 HAS BEEN ISSUED FOR ALL OF SOUTHEAST MICHIGAN UNTIL 9 PM... TORNADO WATCH 498 HAS BEEN ISSUED FOR ALL OF SOUTHEAST MICHIGAN UNTIL 9 PM. COMMUNITIES IN THE WATCH INCLUDE MIDLAND... BAD AXE... SAGINAW... FLINT... PORT HURON... HOWELL... PONTIAC... MT CLEMENS... ANN ARBOR... DETROIT... AND MONROE. AT 4 PM... A LINE OF STRONG THUNDERSTORMS EXTENDED FROM SAGINAW BAY SOUTHWEST TO JUST WEST OF KALAMAZOO. THESE STORMS WERE MOVING TO THE EAST NORTHEAST AT 35 MILES AN HOUR. SOME OF THESE THUNDERSTORMS COULD PRODUCE TORNADOES... LARGE HAIL... AND WIND GUSTS OVER 60 MILES AN HOUR. IF YOU ARE IN SOUTHEAST MICHIGAN THIS AFTERNOON AND EVENING... BE ALERT FOR SEVERE WEATHER. IF YOU SEE THEATENING WEATHER APPROACH... MOVE QUICKLY TO SHELTER. KEYES
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 10:59 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 46 min |
| Jun 21, 4:31 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 59 min |
| Jun 21, 4:47 PM EDT | Tornado Warning | DTX | Genesee | 43 min |
| Jun 21, 5:31 PM EDT | Tornado Warning | DTX | Lapeer | 44 min |
| Jun 21, 5:48 PM EDT | Tornado Warning | DTX | Genesee | 27 min |
| Jun 21, 6:18 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 57 min |
| Jun 21, 6:40 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 35 min |
| Jun 21, 6:50 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 65 min |
| Jun 21, 7:15 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 45 min |
| Jun 21, 7:24 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 31 min |
Nearby
Flash Flood Warnings in Michigan, 1997Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.