Alert archive / Michigan / Flash Flood Warnings in 1987
Flash Flood Warning 5, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at Jun 21, 1987, 8:17 PM EDT for Macomb County, Oakland County, Wayne County, Michigan. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 21, 1987, 8:17 PM EDT (00:17 UTC)
- Expired
- Jun 21, 1987, 11:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
Counties Macomb County, MI, Oakland County, MI, Wayne County, MI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 0.3 hours before the alert went out and 28 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
- 175 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 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, 3:36 PM EDT, 4 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 335 PM EDT SUN JUN 21 1987 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHEASTERN LOWER MICHIGAN UNTIL 700 PM EDT... ...A FLASH FLOOD WATCH IS IN EFFECT UNTIL 1100 AM MONDAY MORNING FOR THE SOUTHERN HALF OF LOWER MICHIGAN... THE SEVERE THUNDERSTORM WATCH INCLUDES THE FOLLOWING COUNTIES IN SOUTHEAST LOWER MICHIGAN. ...OAKLAND MACOMB JACKSON WASHTENAW WAYNE HILLSDALE LENAWEE MONROE... AT 325 PM WEATHER SERVICE RADAR SHOWED SHOWERS AND SOME HEAVY THUNDER- STORMS FROM NORTH OF DETROIT TO LANSING THEN WEST TO NEAR GRAND RAPIDS. ANOTHER AREA OF SHOWERS WAS LOCATED FROM SAGINAW BAY EASTWARD INTO SOUTHERN LAKE HURON. MOVEMENT WAS NORTH-NORTHEAST AT 10 MPH. NO SEVERE WEATHER HAS BEEN REPORTED IN THE STATE YET..HOWEVER THE POTENTIAL FOR SEVERE THUNDERSTORMS REMAINS OVER THE SOUTHEAST SECTION OF LOWER MICHIGAN. SOME OF THESE STORMS COULD PRODUCE FREQUENT LIGHTNING..LARGE HAIL..AND DAMAGING WINDS THIS AFTERNOON. BECAUSE THE THUNDERSTORMS ARE MOVING SO SLOWLY..FLASH FLOODING IS A THREAT OVER THE SOUTHERN HALF OF LOWER MICHIGAN THROUGH TONIGHT. ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING AND TRACK ALONG A STATIONARY FRONT WHICH LIES ACROSS THE LOWER PENINSULA. THESE STORMS COULD PRODUCE VERY HEAVY RAIN OVER SOME AREAS OF THE STATE WHERE MODERATE TO HEAVY RAINS HAVE ALREADY OCCURED. PERSONS IN AND NEAR THE WATCH AREAS ARE URGED TO KEEP INFORMED OF THE LATEST WEATHER INFORMATION AND BE PREPARED TO SEEK SAFE SHELTER SHOULD THREATENING WEATHER BE OBSEVED OR A WARNING ISSUED. JJK
Special weather statement, Jun 21, 4:41 PM EDT, 3 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 440 PM EDT SUN JUN 21 1987 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR SOUTHEASTERN LOWER MICHIGAN UNTIL 700 PM EDT... ...A FLASH FLOOD WATCH IS IN EFFECT UNTIL 1100 AM MONDAY MORNING FOR THE SOUTHERN HALF OF LOWER MICHIGAN... THE SEVERE THUNDERSTORM WATCH INCLUDES THE FOLLOWING COUNTIES IN SOUTHEAST LOWER MICHIGAN. ...OAKLAND MACOMB JACKSON WASHTENAW WAYNE HILLSDALE LENAWEE MONROE... AT 430 PM SCATTERED SHOWERS AND THUNDERSTORMS..SOME HEAVY..CONTINUED ACROSS SOUTHERN LOWER MICHIGAN. WEATHER SERVICE RADAR INDICATED ONE AREA OF PRECIPTATION FROM NORTH OF DETROIT THROUGH THE LANSING AREA AND WEST TO NEAR GR0ND RAPIDS. THESE THUNDERSTORMS PRODUCED 1.5 INCHES OF RAIN IN SOUTH LANSING BETWEEN NOON AND 3:45 PM CAUSING STREET FLOODING IN THE LANSING AREA. SCATTERED SHOWERS AND HEAVY THUNDER- STORMS ARE EXPECTED TO CONTINUE THROUGH THE NIGHT WITH THE POTENTIAL OF FLASH FLOODING ACROSS THE SOUTHERN HALF OF THE STATE. NO SEVERE WEATHER HAS BEEN REPORTED IN THE STATE YET..HOWEVER THE THREAT OF SEVERE THUNDERSTORMS REMAINS OVER THE SOUTHEAST SECTION OF LOWER MICHIGAN. SOME OF THESE STORMS COULD PRODUCE FREQUENT LIGHTNING..LARGE HAIL..AND DAMAGING WINDS THIS AFTERNOON. PERSONS IN AND NEAR THE WATCH AREAS ARE URGED TO KEEP INFORMED OF THE LATEST WEATHER INFORMATION AND BE PREPARED TO SEEK SAFE SHELTER SHOULD THREATENING WEATHER BE OBSEVED OR A WARNING ISSUED. JJK
Nearby
Flash Flood Warnings in Michigan, 1987Every flash flood warning in 1987
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.