Alert archive / Michigan / Flash Flood Warnings in 2004
Flash Flood Warning 2, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at May 21, 2004, 2:12 PM EDT for Washtenaw County, Wayne 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 outline as issued.
The facts
- Issued
- May 21, 2004, 2:12 PM EDT (18:12 UTC)
- Expired
- May 21, 2004, 4:15 PM EDT
- In force
- 2 hr
- Issued by
- NWS Detroit, MI
- Area
- Counties, with a storm outline in the text
Counties Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 47 km from the middle of the area, began a volume at 18:12 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, 6.2 hours before the alert went out and 50 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
- 899 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KDTX 211812 FFWDTX MIC161-163-212015- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 212 PM EDT FRI MAY 21 2004 THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A * FLASH FLOOD WARNING FOR... WASHTENAW COUNTY IN SOUTHEAST MICHIGAN WAYNE COUNTY IN SOUTHEAST MICHIGAN * UNTIL 415 PM EDT * AT 207 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING FLASH FLOODING OVER WASHTENAW COUNTY ...MOVING EAST AT 50 MPH. SOME CITIES AND TOWNS THAT WILL BE AFFECTED BY THE HEAVY RAINFALL INCLUDE...ANN ARBOR...SALINE...YPSILANTI...ROMULUS...LIVONIA... DEARBORN...DEARBORN HEIGHTS...GROSSE ILE...DOWNTOWN DETROIT EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 4240 8403 4213 8401 4211 8314 4242 8289 $$ WAG / DRC
1 follow-up statement
000 WGUS73 KDTX 211907 FFSDTX MIC161-163-212015- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 304 PM EDT FRI MAY 21 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 415 PM EDT FOR WAYNE AND WASHTENAW COUNTIES... AT 302 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE HEAVY RAIN WITH POSSIBLE FLASH FLOODING OVER WASHTENAW AND WAYNE COUNTY. FLOODING HAS BEEN REPORTED IN PARTS OF WASHTENAW AND WAYNE COUNTIES FOLLOWING HEAVY RAIN FROM THE LINE OF STORMS THAT PASSED THROUGH THE AREA EARLIER THIS AFTERNOON. ADDITIONAL RAINFALL AMOUNTS AROUND 1 INCH HAVE BEEN REPORTED. EXCESSIVE RUNOFF FROM THESE STORMS WILL LIKELY CONTINUE TO CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 4240 8403 4213 8401 4211 8314 4242 8289 $$ WAG /DRC
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 11:29 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 91 min |
| May 20, 11:36 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 69 min |
| May 21, 12:03 AM EDT | Tornado Warning | DTX | Washtenaw | 57 min |
| May 21, 12:05 AM EDT | Special Marine Warning | DTX | 55 min | |
| May 21, 12:06 AM EDT | Severe Thunderstorm Warning | DTX | Wayne | 54 min |
| May 21, 12:37 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 83 min |
| May 21, 12:39 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 96 min |
| May 21, 12:46 AM EDT | Special Marine Warning | DTX | 119 min | |
| May 21, 12:56 AM EDT | Severe Thunderstorm Warning | DTX | Wayne | 64 min |
| May 21, 12:59 AM EDT | Special Marine Warning | DTX | 91 min | |
| May 21, 12:58 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 77 min |
| May 21, 1:33 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 57 min |
| May 21, 1:34 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 56 min |
| May 21, 1:36 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 54 min |
| May 21, 1:43 PM EDT | Special Marine Warning | DTX | 92 min | |
| May 21, 1:55 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 65 min |
| May 21, 2:04 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 56 min |
| May 21, 2:08 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 67 min |
| May 21, 2:34 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 56 min |
| May 21, 2:49 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 56 min |
| May 21, 3:10 PM EDT | Special Marine Warning | DTX | 65 min |
Nearby
Flash Flood Warnings in Michigan, 2004Every flash flood warning in 2004
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.