Alert archive / Michigan / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 4, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Apr 18, 2013, 2:42 PM EDT for Washtenaw County, Wayne County, Michigan. It was in force for 48 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 18, 2013, 2:42 PM EDT (18:42 UTC)
- Expired
- Apr 18, 2013, 3:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 54 km from the middle of the area, began a volume at 18:43 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 |
|---|---|---|---|
| Apr 18, 3:00 PM EDT | TSTM WND GST 50 | Dearborn, MI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 18, 10:06 AM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 6.7 hours before the alert went out and 55 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
- 42 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 609 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 476 m²/s²
- 0-3 km storm-relative helicity
- 516 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
221
WUUS53 KDTX 181842
SVRDTX
MIC161-163-181930-
/O.NEW.KDTX.SV.W.0004.130418T1842Z-130418T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
242 PM EDT THU APR 18 2013
THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN WASHTENAW COUNTY IN SOUTHEAST MICHIGAN...
WAYNE COUNTY IN SOUTHEAST MICHIGAN...
* UNTIL 330 PM EDT
* AT 238 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM LIVONIA TO MILAN...AND MOVING NORTHEAST AT 55
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
* SEVERE THUNDERSTORMS WILL BE NEAR...
WAYNE AND GARDEN CITY AROUND 250 PM EDT.
WILLOW AND NEW BOSTON AROUND 255 PM EDT.
BROWNSTOWN TOWNSHIP AND TAYLOR AROUND 300 PM EDT.
GIBRALTER AND DETROIT AROUND 305 PM EDT.
WYANDOTTE AND RIVER ROUGE AROUND 310 PM EDT.
HARPER WOODS AND DOWNTOWN DETROIT AROUND 315 PM EDT.
THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
DETROIT... WYANDOTTE... WILLIS...
TRENTON... DIXBORO... YPSILANTI...
TAYLOR... SALINE... SALEM...
ROMULUS... LIVONIA... GROSSE POINTE...
GROSSE ILE... FLAT ROCK... DOWNTOWN DETROIT...
DEARBORN... CANTON... BELLEVILLE...
ANN ARBOR...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
&&
LAT...LON 4210 8327 4210 8392 4242 8357 4245 8304
4245 8287 4239 8288 4238 8290 4233 8296
4232 8306 4229 8309 4226 8311 4224 8313
4219 8313 4203 8318
TIME...MOT...LOC 1842Z 245DEG 48KT 4246 8333 4208 8362
HAIL...<.75IN
WIND...60MPH
$$
DEG/BEHNKE4 follow-up statements
427
WWUS53 KDTX 181850
SVSDTX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
250 PM EDT THU APR 18 2013
MIC161-163-181930-
/O.CON.KDTX.SV.W.0004.000000T0000Z-130418T1930Z/
WASHTENAW MI-WAYNE MI-
250 PM EDT THU APR 18 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WAYNE AND
SOUTHEASTERN WASHTENAW COUNTIES UNTIL 330 PM EDT...
AT 247 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM SOUTHFIELD TO WILLIS...AND MOVING EAST AT 35 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
SEVERE THUNDERSTORMS WILL BE NEAR...
ROMULUS AROUND 255 PM EDT.
TAYLOR AND DEARBORN AROUND 305 PM EDT.
DETROIT AND FLAT ROCK AROUND 310 PM EDT.
WYANDOTTE AROUND 315 PM EDT.
TRENTON AND DOWNTOWN DETROIT AROUND 320 PM EDT.
GROSSE POINTE AROUND 330 PM EDT.
THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
DETROIT... WYANDOTTE... WILLIS...
TRENTON... YPSILANTI... TAYLOR...
ROMULUS... LIVONIA... GROSSE POINTE...
FLAT ROCK... DOWNTOWN DETROIT... DEARBORN...
CANTON... BELLEVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
&&
LAT...LON 4210 8327 4211 8380 4242 8354 4244 8331
4245 8287 4239 8288 4233 8296 4232 8306
4229 8309 4224 8313 4219 8313 4207 8317
4207 8318 4203 8318
TIME...MOT...LOC 1850Z 262DEG 29KT 4243 8326 4211 8351
HAIL...<.75IN
WIND...60MPH
$$
BEHNKE562
WWUS53 KDTX 181859
SVSDTX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
259 PM EDT THU APR 18 2013
MIC161-163-181930-
/O.CON.KDTX.SV.W.0004.000000T0000Z-130418T1930Z/
WASHTENAW MI-WAYNE MI-
259 PM EDT THU APR 18 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WAYNE AND EAST
CENTRAL WASHTENAW COUNTIES UNTIL 330 PM EDT...
AT 256 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM SOUTHFIELD TO WILLIS...AND MOVING EAST AT 30 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
SEVERE THUNDERSTORMS WILL BE NEAR...
TAYLOR AND DEARBORN AROUND 310 PM EDT.
DETROIT AND FLAT ROCK AROUND 315 PM EDT.
WYANDOTTE AND TRENTON AROUND 325 PM EDT.
GROSSE POINTE AROUND 330 PM EDT.
THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
DETROIT... WYANDOTTE... WILLIS...
TRENTON... TAYLOR... ROMULUS...
LIVONIA... GROSSE POINTE... FLAT ROCK...
DOWNTOWN DETROIT... DEARBORN... CANTON...
BELLEVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
&&
LAT...LON 4210 8327 4211 8371 4243 8346 4244 8331
4245 8287 4239 8288 4233 8296 4232 8306
4229 8309 4224 8313 4219 8313 4207 8317
4207 8318 4203 8318
TIME...MOT...LOC 1859Z 263DEG 25KT 4244 8319 4212 8345
HAIL...<.75IN
WIND...60MPH
$$
DEG/BEHNKE881
WWUS53 KDTX 181916
SVSDTX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
316 PM EDT THU APR 18 2013
MIC161-181926-
/O.CAN.KDTX.SV.W.0004.000000T0000Z-130418T1930Z/
WASHTENAW MI-
316 PM EDT THU APR 18 2013
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WASHTENAW COUNTY
IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 4210 8327 4211 8354 4226 8354 4243 8342
4245 8287 4239 8288 4233 8296 4232 8306
4229 8309 4224 8313 4219 8313 4207 8318
4203 8318
TIME...MOT...LOC 1916Z 264DEG 22KT 4242 8310 4211 8335
$$
MIC163-181930-
/O.CON.KDTX.SV.W.0004.000000T0000Z-130418T1930Z/
WAYNE MI-
316 PM EDT THU APR 18 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WAYNE COUNTY
UNTIL 330 PM EDT...
AT 313 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM DETROIT TO CARLETON...AND MOVING EAST AT 25 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
SEVERE THUNDERSTORMS WILL BE NEAR...
FLAT ROCK AROUND 325 PM EDT.
DOWNTOWN DETROIT AND TRENTON AROUND 330 PM EDT.
THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
DETROIT... WYANDOTTE... TRENTON...
TAYLOR... ROMULUS... LIVONIA...
GROSSE POINTE... FLAT ROCK... DOWNTOWN DETROIT...
DEARBORN... CANTON... BELLEVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
&&
LAT...LON 4210 8327 4211 8354 4226 8354 4243 8342
4245 8287 4239 8288 4233 8296 4232 8306
4229 8309 4224 8313 4219 8313 4207 8318
4203 8318
TIME...MOT...LOC 1916Z 264DEG 22KT 4242 8310 4211 8335
HAIL...<.75IN
WIND...60MPH
$$
BEHNKE850
WWUS53 KDTX 181926
SVSDTX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
326 PM EDT THU APR 18 2013
MIC163-181936-
/O.EXP.KDTX.SV.W.0004.000000T0000Z-130418T1930Z/
WAYNE MI-
326 PM EDT THU APR 18 2013
...THE SEVERE THUNDERSTORM WARNING FOR WAYNE COUNTY WILL EXPIRE AT
330 PM EDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 600 PM EDT.
LAT...LON 4210 8327 4211 8354 4226 8354 4243 8342
4245 8287 4239 8288 4233 8296 4232 8306
4229 8309 4224 8313 4219 8313 4207 8318
4203 8318
TIME...MOT...LOC 1926Z 264DEG 22KT 4242 8302 4212 8327
$$
BEHNKEWhat 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.
NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 1:36 PM EDT, 1 hour 6 minutes earlier.
Area forecast discussion, Apr 18, 1:36 PM EDT, 1 hour 6 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
136 PM EDT THU APR 18 2013
.AVIATION...
//DISCUSSION...
WELL MIXED WARM SECTOR ENVIRONMENT THROUGH THE AFTERNOON WILL
CONTINUE TO BRING SOUTH-SOUTHWEST WIND GUSTS IN EXCESS OF 30 KNOTS.
IN ADDITION...THIN PRE-FRONTAL CONVECTIVE LINE AND TRAILING AREA OF
SHOWERS WILL EXPAND ACROSS THE REGION THROUGH 20Z. THIS WILL
PROVIDE A WINDOW FOR THUNDERSTORMS TO MOVE ACROSS ONE OR MORE
TERMINALS. OUTSIDE OF A HEAVIER DOWNPOUR...THE DEEP MIXED LAYER
WILL SUPPORT A VFR CONDITIONS INTO THE EVENING HOURS. A RENEWED
PERIOD OF SHOWER/THUNDERSTORM DEVELOPMENT WILL COMMENCE ALONG THE
ADVANCING COLD FRONT TONIGHT. THIS WILL FAVOR A DETERIORATION TO
MVFR/BRIEF IFR CONDITIONS DURING THE EARLY MORNING HOURS.
INCREASING POST-FRONTAL SOUTHWESTERLY WINDS INTO FRIDAY...GUSTS
BY MIDDAY INTO THE 35 KNOT RANGE.
FOR DTW...NON-CONVECTIVE WIND GUSTS WILL CONTINUE IN THE 30 TO 35
KNOT RANGE THIS AFTERNOON. THIN CONVECTIVE LINE WILL WORK THROUGH
THE TERMINAL 18-20Z...WARRANTING A THUNDER INCLUSION PER RECENT
TRENDS. INTERMITTENT SUB-5000 FT CEILINGS CONTAINED WITHIN THE
ADVANCING PRECIPITATION SHIELD. GREATER POTENTIAL FOR A LOWER
CEILINGS /MVFR/ TONIGHT WITH THE NEXT ROUND OF PRECIPITATION TIED TO
AN APPROACHING COLD FRONT. STRONG SOUTHWEST WINDS EXPECTED FOR
FRIDAY.
//DTW THRESHOLD THREATS...
* MEDIUM CONFIDENCE IN CEILINGS INTERMITTENTLY FALLING BELOW 5000 FT
THROUGH THIS EVENING...HIGH CONFIDENCE IN CEILING BELOW 5000 FT
OVERNIGHT.
* HIGH CONFIDENCE IN THUNDERSTORM DEVELOPMENT TONIGHT...LOW
CONFIDENCE IN EXACT TIMING...DURATION AND COVERAGE.
* HIGH CONFIDENCE IN WIND GUSTS IN EXCESS OF 30 KNOTS FROM 180-200
DEG THROUGH 21Z TODAY. HIGH CONFIDENCE IN WIND GUSTS IN EXCESS OF
30 KNOTS FROM 240-250 DEG ON FRIDAY.
&&
.PREV DISCUSSION...ISSUED 1130 AM EDT THU APR 18 2013
UPDATE...
RECENT FORECAST/GRID UPDATE IN PLACE TO REFLECT RECENT LOCAL AND
UPSTREAM TRENDS AND TO INCLUDE OF THE AREAWIDE TORNADO WATCH NOW IN
EFFECT UNTIL 6 PM.
WARM FRONTAL BOUNDARY MAKING STEADY PROGRESS NORTHWARD THROUGH SE
MICHIGAN LATE THIS MORNING...LATEST ANALYSIS PLACING THE SURFACE
BOUNDARY AT THE I-69 CORRIDOR. PROGRESSIVE BOUNDARY LAYER
MOISTENING UNDERWAY IN THE WAKE OF THIS FROPA THROUGHOUT SOUTHERN
PORTIONS OF SE MICHIGAN...AREA DEWPOINTS NOW EASING INTO THE LOWER
60S. RECENT POCKET OF CLEARING ALONG THAT CORRIDOR CERTAINLY
CONTRIBUTING TO THE DESTABILIZATION PROCESS...ALBEIT A BRIEF LOOKING
WINDOW TO MAXIMIZE THE DIABATIC HEATING POTENTIAL WITH THE NEXT HIGH
CLOUD CANOPY QUICKLY ON THE DOORSTEP. A LEAD SURFACE LOW EMERGING
ALONG THE WESTERN FLANK OF THIS BOUNDARY NOW SHIFTING ACROSS
SOUTHERN LAKE MICHIGAN...ANCHORED WITHIN AN INCREASING CORRIDOR OF
FORCED ASCENT ATTENDANT TO STOUT LOW AND UPPER LEVEL JET FORCING.
MASS CONVERGENCE ALONG THE EASTERN FLANK OF THIS WAVE SEEMINGLY
DRIVING THE CURRENT REGION OF LINEAR CONVECTION NOW SHIFTING THROUGH
SOUTHWEST LOWER MI...WHILE THE FORWARD PROPAGATING SOUTHERN EXTENSION
OF THIS PRE-FRONTAL CONVECTION CONTINUES THROUGH NORTHERN IN.
RECENT ASSESSMENT OF THE MESOSCALE ENVIRONMENT CONTINUES TO SUPPORT
AT LEAST A CONDITIONAL SEVERE RISK THROUGH THE DAYLIGHT PERIOD. THE
SLOWING EVOLVING THERMODYNAMIC FIELD MAY PROVE JUST SUFFICIENT
ENOUGH (MUCAPE NOW OVER 500 J/KG) GIVEN THE NOTED BOUNDARY LAYER
MOISTENING TO SUSTAIN THE ONGOING UPSTREAM ACTIVITY...WHICH
CERTAINLY CARRIES MORE THAN SUFFICIENT DEEP LAYER SHEAR TO MAINTAIN
A FORWARD PROPAGATING LINEAR COMPONENT AND THE RISK OF STRONGER WIND
GUSTS. THE INFLECTION POINT OF THE WARM FRONT WITH THE EAST SIDE
OF THE EAST-NORTHEASTWARD ADVANCING SURFACE WAVE COULD ALSO BECOME
A LOCALIZED CATALYST...YIELDING A REGION OF ENHANCED HELICITY AND
PROVIDING THAT CONDITIONAL TORNADO RISK FOR ANY CELL THAT CAN
ANCHOR ON THE FRONTAL ZONE.
PREV DISCUSSION...ISSUED 441 AM EDT THU APR 18 2013
SHORT TERM...TODAY AND TONIGHT
SURFACE WARM FRONT ANALYZED OVER NORTHERN OHIO...WILL SURGE NORTH
THIS MORNING AS THE LOW PRESSURE SYSTEM OVER THE MID MISSISSIPPI
VALLEY UNDERGOES RAPID CYCLOGENESIS. A WAVE OF LOW PRESSURE RAPIDLY
MOVING THROUGH THE WESTERN GREAT LAKES WILL CAUSE THE SURFACE LOW TO
SPLIT INTO TWO DISTINCT LOW PRESSURE CENTERS. THE NORTHERN LOW
SURGING NORTH WILL ASSIST IN LIFTING THE WARM FRONT NORTH THROUGH
THE STILL COOL GREAT LAKES. REGIONAL RADAR MOSAIC SHOWS THE MID
LEVEL WARM FRONT LIFTING NORTH...WITH THE SURFACE FRONT EXPECTED TO
FOLLOW LATER THIS MORNING. THE SURGING WARM FRONT WILL BRING WARM
TEMPERATURES TO SOUTHEAST MICHIGAN TODAY...AS GUSTY SOUTH TO
SOUTHWEST WINDS BRING DEW POINTS AROUND 60 DEGREES AS SURFACE
TEMPERATURES WARM INTO THE 70S. A FEW 80 DEGREE READINGS ARE
POSSIBLE...MAINLY ACROSS THE FAR SOUTH WHERE A BREAK IN THE
CONVECTION IS MOST LIKELY TO OCCUR WITH A POSSIBLE BREAK IN THE
CLOUD COVER.
REGARDING THE BREAK IN THE ACTIVITY ACROSS THE FAR SOUTHERN CWA
TODAY...DESPITE MODEL SOLUTIONS INDICATING THIS AREA COULD SEE A
BREAK IN CONVECTION FOR A GOOD PORTION OF THE MORNING HOURS...WILL
NOT LOWER POPS ACROSS THESE AREAS BELOW LIKELY AS THE SURFACE WARM
FRONT COULD STILL GENERATE ACTIVITY AS IT SURGES NORTH AND THE
NUMEROUS WAVES TRACKING ALONG THE WARM FRONT COULD ASSIST IN
ADDITIONAL DEVELOPMENT DESPITE THE CURRENT PERIOD OF RELATIVE QUIET.
FARTHER NORTH THE FRONT IS EXPECTED TO STALL...WITH RAIN SHOWERS AND
THUNDERSTORMS EXPECTED FOR THE BALANCE OF THE DAY...WITH CONTINUED
HIGH POPS THROUGH THE PERIOD. HIGH POPS RETURN EVERYWHERE TONIGHT AS
THE COLD FRONT APPROACHES AND HEAVY RAIN AGAIN THREATENS THE REGION.
THE AFOREMENTIONED HIGH DEW POINTS ADVECTING IN BEHIND THE WARM
FRONT WILL PROVIDE A HIGH MOISTURE CONTENT ACROSS SOUTHEAST MICHIGAN
TODAY AND TONIGHT. CONVECTION THAT DEVELOPS TODAY WILL TAP INTO PWAT
VALUES OF 1.5 TO 1.75 WITH LONG SKINNY CAPE PROFILES. THIS MOISTURE
WHEN COMBINED WITH STRONG DYNAMICS WILL BRING SEVERAL ROUNDS OF
HEAVY RAIN TO SOUTHEAST MICHIGAN TODAY AND TONIGHT. ALTHOUGH THE
SOUTHERN CWA COULD SEE A BREAK IN THE ACTION...ADDITIONAL ACTIVITY
THIS AFTERNOON AND TONIGHT WILL FALL ON GROUND THAT HAS ALREADY
RECEIVED ONE HALF TO THREE QUARTERS OF AN INCH OF RAIN OVERNIGHT.
THEREFORE WILL EXTEND THE FLOOD WATCH SOUTH TO THE OHIO BORDER GIVEN
THE ADDITIONAL HEAVY RAINS EXPECTED. RAINFALL AMOUNTS WILL RANGE
FROM 2 TO 3 INCHES ACROSS THE NORTH WITH A FEW LOCATIONS POSSIBLY
GETTING 4 INCHES...WITH 1 TO 2 INCHES ACROSS THE SOUTH.
IN ADDITION TO THE FLOOD POTENTIAL...SEVERE WEATHER IS A MAJOR
CONCERN TODAY AND THIS EVENING. WITH THE WARM FRONT SURGING NORTH
THE HIGH SURFACE DEW POINTS WILL ALLOW SURFACE BASED CAPE VALUES TO
RISE TO 1.5 TO 2 J/G DURING THE AFTERNOON WITH MUCAPE VALUES
REMAINING NEAR 1 J/G INTO THE EVENING HOURS. HIGH WINDS ARE A REAL
THREAT FROM CONVECTION THAT DEVELOPS AS WINDS MEET OR EXCEED 60
KNOTS AS LOW AS 3500 FEET. HODOGRAPHS ARE ALSO QUITE IMPRESSIVE WITH
SURFACE TO 1 KM HELICITY VALUES OF 250 TO 300 WITH SHEAR VALUES OF
20 TO 25 M/S. THE ONE SEVERE WEATHER PARAMETER THAT IS NOT TOO
IMPRESSIVE IS THE FREEZING LEVEL...WHICH IS 11-12K FEET ALONG WITH
THE LONG SKINNY CAPE WHICH ARE NOT VERY CONDUCIVE FOR LARGE HAIL. IT
APPEARS THE MAIN THREAT WILL BE DAMAGING WINDS...WHICH IT WILL NOT
TAKE MUCH TO BRING TO THE SURFACE GIVEN THE STRONG WINDS JUST OFF
THE DECK. THERE WILL ALSO BE AN ELEVATED TORNADO THREAT GIVEN THE
HODOGRAPH AND HIGH AMOUNT OF SHEAR IN THE LOWEST LEVELS OF THE
ATMOSPHERE AS WINDS TURN FROM SOUTH AT 25 KNOTS TO SOUTHWEST AT 60
KNOTS AT 3500 FT. THE MAIN FACTOR AGAINST TORNADO DEVELOPMENT IS THE
LACK OF LOW LEVEL CAPE. HOWEVER THE SOUTHERN CWA IS MOST AT
RISK...ESPECIALLY IF THERE IS A BREAK IN THE CONVECTION AND SOME
AFTERNOON SUNSHINE CAN GENERATE LOW LEVEL CAPE AND ENHANCE EHI
VALUES WHICH GET TO AROUND 2 JUST TO OUR SOUTHWEST.
LONG TERM...
A POTENT SHORTWAVE RACING SOUTHEAST FROM NORTHERN ALBERTA WILL PHASE
WITH OUR STORM SYSTEM OVER THE MIDWEST/WESTERN GREAT LAKES...LEADING
TO CONTINUED INTENSIFICATION DURING THE DAY AS THE LOW LIFTS INTO
THE NORTHERN GREAT LAKES. 00Z NAM/REGIONAL GEM/GFS HAVE ALL RAMPED
UP THE LOW LEVEL COLD ADVECTION THROUGH THE DAY...WITH 850 MB
TEMPS FALLING TO -5 TO -7 C BY 00Z SATURDAY...WHICH WOULD BE ABLE
TO SUPPORT SNOW SHOWERS. WITH THIS KIND OF LOW LEVEL COLD
ADVECTION...CONFIDENCE IS HIGH A WIND ADVISORY WILL BE NEEDED FOR
FRIDAY...AS 850 MB WIND SPEEDS ARE SOLID 45 TO 50 KNOTS...AND
BOUNDARY LAYER DEPTHS WILL HAVE NO PROBLEM EXTENDING TO 850 MB AND
ABOVE. WITH SOUTHWEST FLOW AND CLOSER PROXIMITY TO THE SURFACE
LOW...THE SAGINAW VALLEY STANDS THE BEST CHANCE OF SEEING WIND
SPEEDS OF 50 MPH.
THE COLDER SOLUTION CARRIES INTO SATURDAY MORNING...AS 850 MB TEMPS
PROGGED TO BE -8 SOUTH TO -12 C NORTH...ASSURING A COOL SATURDAY
WITH TEMPS IN THE 40S. WITH THAT AMOUNT OF COLD AIR AND CYCLONIC
FLOW TO START THE DAY...PREFER TO UP CLOUDS A BIT...AS UKMET SHOWS
90+ PERCENT RH AT 850 MB.
SURFACE HIGH BUILDING OVER SOUTHEAST MICHIGAN SATURDAY EVENING
UNDERNEATH THE NORTHWEST CONFLUENT FLOW LOOKS TO PROVIDE FAVORABLE
RADIATING CONDITIONS...WITH NORMALLY COLDER SPOTS EXPECTED TO DROP
INTO THE UPPER 20S.
RETURN FLOW AND GOOD INSOLATION ON SUNDAY AROUND THE DEPARTING
HIGH WILL ALLOW TEMPS TO RISE INTO THE 50S...BUT SURFACE SOUTHEAST
FLOW WILL LIKELY HAVE A MARGINAL IMPACT...AND WILL CARRY LOW/MID
50S.
THE NEXT ROUND OF GOOD HEIGHT FALLS WILL SPREAD INTO THE CENTRAL
CONUS ON MONDAY...WITH THE GFS/CANADIAN REMAINING FAIRLY CONSISTENT
WITH THE TIMING OF THE NEXT LOW PRESSURE SYSTEM/COLD FRONT...MOVING
THROUGH ON TUESDAY. THE PROBLEM IS THE 12Z EURO WAS SLOWER AND
DEEPER WITH THE TROUGH MOVING THROUGH THE SOUTHERN PLAINS...AND THE
LOW DEEPENS A BIT TOO FAR TO OUR SOUTHWEST ON TUESDAY...AND DOES NOT
ARRIVE UNTIL WEDNESDAY. THERE WAS STILL A GOOD INVERTED TROUGH
EXTENDING INTO LOWER MICHIGAN ON TUESDAY...SO STILL SUPPORT CHANCE
POPS BEFORE THE MORE WIDESPREAD ACTIVITY ARRIVES
TUESDAY NIGHT-WEDNESDAY.
MARINE...
A NORTHWARD SURGING WARM FRONT WILL BRING GUSTY WINDS AND ELEVATED
WAVE HEIGHTS TO THE CENTRAL GREAT LAKES TODAY...NECESSITATING SMALL
CRAFT ADVISORIES ACROSS MUCH OF THE NEARSHORE AREAS.
THEREFORE...WILL MAINTAIN THE CURRENT SHORT TERM HEADLINES FOR THIS
PACKAGE.
A COLD FRONT WILL SWEEP THROUGH THE CENTRAL GREAT LAKES
TONIGHT...WITH GUSTY SOUTHWEST WINDS ON FRIDAY...BECOMING WEST
FRIDAY NIGHT. GALE FORCE WINDS ARE POSSIBLE BEHIND THIS POWERFUL
COLD FRONT FRIDAY AND FRIDAY NIGHT WITH A VERY TIGHT PRESSURE
GRADIENT ACROSS THE CENTRAL GREAT LAKES. WILL CONTINUE THE GALE
WATCH FRIDAY INTO FRIDAY NIGHT FOR THIS POTENTIAL.
SHOWERS AND THUNDERSTORMS WILL ALSO BE PREVALENT TODAY AND TONIGHT
AS THIS STRONG STORM SYSTEM APPROACHES AND THEN CROSSES THE REGION.
SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS
EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT AND LARGE HAIL A
POSSIBILITY.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...FLOOD WATCH...MIZ047-MIZ048-MIZ049-MIZ053-MIZ054-MIZ055-MIZ060-
MIZ061-MIZ062-MIZ063-MIZ068...UNTIL 8 AM FRIDAY.
FLOOD WATCH...MIZ069-MIZ070-MIZ075-MIZ076-MIZ082-MIZ083...UNTIL 11
AM FRIDAY.
LAKE HURON...
GALE WARNING...LHZ361-LHZ362-LHZ363...FROM 5 AM FRIDAY TO 8 AM
SATURDAY.
GALE WARNING...LHZ421-LHZ422-LHZ441-LHZ442-LHZ443-LHZ462-LHZ463-
LHZ464...FROM 5 AM FRIDAY TO MIDNIGHT SATURDAY.
SMALL CRAFT ADVISORY...NEARSHORE WATERS FROM PORT AUSTIN TO PORT
HURON INCLUDING SAGINAW BAY...UNTIL 5 AM FRIDAY.
LAKE ST CLAIR...
GALE WARNING...FROM 5 AM FRIDAY TO MIDNIGHT SATURDAY.
MI WATERS OF LAKE ERIE...
GALE WARNING...FROM 5 AM FRIDAY TO MIDNIGHT SATURDAY.
SMALL CRAFT ADVISORY...UNTIL 5 AM FRIDAY.
&&
AVIATION.....MR
UPDATE.......MR
SHORT TERM...KURIMSKI
LONG TERM....SF
MARINE.......KURIMSKI
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS
ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).Hazardous weather outlook, Apr 18, 4:30 AM EDT, 10 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 430 AM EDT THU APR 18 2013 MIZ047>049-053>055-060>063-068>070-075-076-082-083-190830- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 430 AM EDT THU APR 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE LIKELY TODAY AND TONIGHT AS A STRONG STORM SYSTEM MOVES INTO THE WESTERN GREAT LAKES. SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING ACROSS ALL OF SOUTHEAST MICHIGAN. THE MAIN HAZARD WITH THESE STORMS WILL BE DAMAGING WINDS TO 70 MPH...BUT ISOLATED TORNADOES ARE POSSIBLE...ALONG WITH LARGE HAIL AROUND 1 INCH IN DIAMETER. IN ADDITION...TORRENTIAL RAINFALL WILL OCCUR WITH ANY STRONG THUNDERSTORM...AND A FLOOD WATCH IS IN EFFECT THROUGH FRIDAY MORNING. STORM MOTION WILL BE TO THE NORTHEAST AT NEAR 50 MPH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A WIND ADVISORY WILL LIKELY BE NEEDED ON FRIDAY AS STRONG COLD FRONT MOVES THROUGH EARLY IN THE DAY. SOUTHWEST WINDS BEHIND THE FRONT WILL GUST TO 45 MPH OR GREATER DURING THE DAY AS TEMPERATURES FALL INTO THE 40S. .SPOTTER INFORMATION STATEMENT... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION MAY BE NEEDED ON THURSDAY. LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-190830- ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT BEYOND 5 NM OFF SHORE- LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM OFF SHORE- LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE- LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE- LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE- 430 AM EDT THU APR 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE LIKELY TODAY AND TONIGHT AS A STRONG STORM SYSTEM MOVES INTO THE WESTERN GREAT LAKES. SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. THE MAIN HAZARD WITH THESE STORMS WILL BE WIND GUSTS TO 70 MPH. STORM MOTION WILL BE TO THE NORTHEAST AT NEAR 50 MPH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A GALE WATCH IS IN EFFECT FROM FRIDAY INTO FRIDAY NIGHT. REFER TO THE LATEST MARINE PRODUCTS FOR ADDITIONAL INFORMATION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. SF YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
In the hours before
Local storm report, Apr 18, 9:48 AM EDT, 4 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
948 AM EDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN SANDUSKY 43.42N 82.83W
04/18/2013 M0.53 INCH SANILAC MI CO-OP OBSERVER
24 HOUR TOTAL
0710 AM HEAVY RAIN LEXINGTON 43.27N 82.53W
04/18/2013 M0.64 INCH SANILAC MI CO-OP OBSERVER
24 HOUR TOTAL
0800 AM HEAVY RAIN 4 E WHITE LAKE 42.65N 83.43W
04/18/2013 M0.71 INCH OAKLAND MI OFFICIAL NWS OBS
24 HOUR TOTAL AT DETROIT/PONTIAC OFFICE
0800 AM HEAVY RAIN SAGINAW 43.42N 83.95W
04/18/2013 M2.05 INCH SAGINAW MI CO-OP OBSERVER
24 HOUR TOTAL
0800 AM HEAVY RAIN 6 WNW DURAND 42.95N 84.10W
04/18/2013 M1.22 INCH SHIAWASSEE MI COCORAHS
12 HOUR TOTAL
0800 AM HEAVY RAIN WYANDOTTE 42.21N 83.16W
04/18/2013 M0.54 INCH WAYNE MI CO-OP OBSERVER
24 HOUR TOTAL
&&
RKULIKLocal storm report, Apr 18, 11:23 AM EDT, 3 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1123 AM EDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 4 NE DEARBORN 42.35N 83.16W
04/18/2013 M1.02 INCH WAYNE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 ESE BIRCH RUN 43.23N 83.74W
04/18/2013 M1.42 INCH SAGINAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 SSW BAD AXE 43.79N 83.00W
04/18/2013 M1.50 INCH HURON MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 S SAGINAW 43.38N 83.95W
04/18/2013 M0.00 INCH SAGINAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 NW SAGINAW 43.45N 83.99W
04/18/2013 M2.03 INCH SAGINAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 WNW WOODHAVEN 42.14N 83.25W
04/18/2013 M0.51 INCH WAYNE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 2 W PORT HURON 42.99N 82.47W
04/18/2013 M0.59 INCH ST. CLAIR MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 6 ENE ADRIAN 41.93N 83.94W
04/18/2013 M0.60 INCH LENAWEE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 2 NW WATERFORD 42.68N 83.42W
04/18/2013 M0.61 INCH OAKLAND MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 NNW UTICA 42.64N 83.03W
04/18/2013 M0.72 INCH MACOMB MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 2 N CLINTION TOWNSHIP 42.62N 82.92W
04/18/2013 M0.72 INCH MACOMB MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN SSE SHELBY TOWNSHIP 42.67N 83.03W
04/18/2013 M0.73 INCH MACOMB MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 8 NNE MIDLAND 43.73N 84.17W
04/18/2013 M0.76 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 2 ENE MIDLAND 43.63N 84.19W
04/18/2013 M0.98 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 S CLINTION TOWNSHIP 42.57N 82.92W
04/18/2013 M0.97 INCH MACOMB MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 SE BELLEVILLE 42.17N 83.44W
04/18/2013 M0.95 INCH WAYNE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 N COMMERCE 42.61N 83.49W
04/18/2013 M0.92 INCH OAKLAND MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 SSW DAVISON 43.02N 83.53W
04/18/2013 M0.92 INCH GENESEE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 SSW LIVONIA 42.38N 83.38W
04/18/2013 M0.91 INCH WAYNE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN SSE NEW BALTIMORE 42.68N 82.74W
04/18/2013 M0.91 INCH MACOMB MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 SE ANN ARBOR 42.24N 83.69W
04/18/2013 M0.90 INCH WASHTENAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 SSE LIVONIA 42.36N 83.35W
04/18/2013 M0.90 INCH WAYNE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 2 WNW ANN ARBOR 42.29N 83.77W
04/18/2013 M0.87 INCH WASHTENAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 NNW LINDEN 42.83N 83.79W
04/18/2013 M0.87 INCH GENESEE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 4 SW MILFORD 42.54N 83.66W
04/18/2013 M0.87 INCH OAKLAND MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 5 W PLYMOUTH 42.37N 83.57W
04/18/2013 M0.87 INCH WASHTENAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 WNW BRITTON 41.99N 83.85W
04/18/2013 M0.86 INCH LENAWEE MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 NW LUM 43.11N 83.17W
04/18/2013 M0.82 INCH LAPEER MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 3 SE ANN ARBOR 42.24N 83.69W
04/18/2013 M0.86 INCH WASHTENAW MI COCORAHS
24 HOUR TOTAL
0700 AM HEAVY RAIN 1 W BLOOMFIELD HILLS 42.58N 83.27W
04/18/2013 M0.77 INCH OAKLAND MI COCORAHS
24 HOUR TOTAL
0953 AM HEAVY RAIN HEMLOCK 43.42N 84.23W
04/18/2013 M2.60 INCH SAGINAW MI TRAINED SPOTTER
24 HOUR TOTAL
&&
RKULIKSpecial weather statement, Apr 18, 1:20 PM EDT, 1 hour 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 120 PM EDT THU APR 18 2013 MIZ060>063-068>070-075-076-082-083-181845- GENESEE-LAPEER-LENAWEE-LIVINGSTON-MACOMB-MONROE-OAKLAND-SHIAWASSEE- ST. CLAIR-WASHTENAW-WAYNE- 120 PM EDT THU APR 18 2013 ...SIGNIFICANT WEATHER ADVISORY... AT 116 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES SOUTHWEST OF DURAND TO 8 MILES NORTHWEST OF HUDSON...MOVING NORTHEAST AT 55 MPH. WINDS GREATER THAN 40 MPH...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS. * THUNDERSTORMS WILL BE NEAR... FOWLERVILLE AND DURAND BY 125 PM EDT... LENNON AND ONSTED BY 130 PM EDT... ADRIAN AND OAK GROVE BY 135 PM EDT... FLUSHING AND BLISSFIELD BY 140 PM EDT... TECUMSEH AND OTTAWA LAKE BY 145 PM EDT... MOUNT MORRIS AND PETERSBURG BY 150 PM EDT... TEMPERANCE AND DUNDEE BY 155 PM EDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED. DEG/CB
Local storm report, Apr 18, 2:19 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
219 PM EDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0215 PM TSTM WND GST 4 E WHITE LAKE 42.65N 83.43W
04/18/2013 M56 MPH OAKLAND MI OFFICIAL NWS OBS
&&
DTHOMPLocal storm report, Apr 18, 2:28 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
228 PM EDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0210 PM TSTM WND DMG 2 WNW ORTONVILLE 42.86N 83.48W
04/18/2013 OAKLAND MI TRAINED SPOTTER
2.5 FOOT DIAMETER TREE DOWN. REPORTS OF CHIMNEYS DOWN.
&&
DTHOMPSpecial weather statement, Apr 18, 2:31 PM EDT, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 231 PM EDT THU APR 18 2013 MIZ075-076-082-083-181930- LENAWEE-MONROE-WASHTENAW-WAYNE- 231 PM EDT THU APR 18 2013 ...SIGNIFICANT WEATHER ADVISORY... AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES NORTHWEST OF LIVONIA TO 8 MILES SOUTHWEST OF BLISSFIELD...MOVING NORTHEAST AT 40 MPH. WINDS UP TO 50 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF MODERATE DOWNPOURS...ARE POSSIBLE WITH THESE STORMS. * THUNDERSTORMS WILL BE NEAR... LIVONIA AND DEERFIELD BY 240 PM EDT... WILLIS AND OTTAWA LAKE BY 245 PM EDT... PETERSBURG AND DUNDEE BY 250 PM EDT... LAMBERTVILLE BY 255 PM EDT... TEMPERANCE AND ROMULUS BY 300 PM EDT... IDA BY 305 PM EDT... LUNA PIER AND TAYLOR BY 310 PM EDT... GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED. JVC
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 9:45 AM EDT | Gale Warning | DTX | 46 hr | |
| Apr 18, 10:16 AM EDT | Areal Flood Warning | DTX | Bay, Huron, Midland, Saginaw, Tuscola | 24 hr |
| Apr 18, 10:22 AM EDT | Areal Flood Warning | DTX | Bay, Huron, Midland, Saginaw, Tuscola | 24 hr |
| Apr 18, 10:48 AM EDT | River Flood Warning | DTX | Midland, Saginaw | 3 days |
| Apr 18, 10:48 AM EDT | River Flood Warning | DTX | Saginaw, Shiawassee | 65 hr |
| Apr 18, 10:48 AM EDT | River Flood Warning | DTX | Saginaw, Tuscola | 68 hr |
| Apr 18, 10:48 AM EDT | River Flood Warning | DTX | Saginaw | 3 days |
| Apr 18, 1:50 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Oakland | 40 min |
| Apr 18, 2:11 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Oakland | 49 min |
| Apr 18, 2:23 PM EDT | Special Marine Warning | DTX | 112 min | |
| Apr 18, 2:40 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 50 min |
| Apr 18, 2:49 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 56 min |
| Apr 18, 2:54 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 51 min |
| Apr 18, 3:00 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 45 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2013Every severe thunderstorm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.