WATCH COUNTY NOTIFICATION FOR WATCH 406
NATIONAL WEATHER SERVICE NORTHERN INDIANA
255 PM EDT WED JUL 10 2013
INC001-003-009-033-053-069-075-103-169-179-OHC039-051-069-125-171-
102000-
/O.CAN.KIWX.SV.A.0406.000000T0000Z-130711T0000Z/
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 406 FOR THE FOLLOWING AREAS
IN INDIANA THIS CANCELS 10 COUNTIES
IN NORTHERN INDIANA
ADAMS ALLEN IN BLACKFORD
DE KALB GRANT HUNTINGTON
JAY MIAMI WABASH
WELLS
IN OHIO THIS CANCELS 5 COUNTIES
IN NORTHWEST OHIO
DEFIANCE FULTON OH HENRY
PAULDING WILLIAMS
THIS INCLUDES THE CITIES OF...ANTWERP...ARCHBOLD...AUBURN...
BERNE...BLUFFTON...BRYAN...DECATUR...DEFIANCE...DESHLER...
DUNKIRK...FAYETTE...FORT WAYNE...GARRETT...GAS CITY...
GRISSOM AFB...HARTFORD CITY...HICKSVILLE...HUNTINGTON...
LIBERTY CENTER...MARION...MELROSE...MEXICO...MONTPELIER...
MONTPELIER...NAPOLEON...NEW HAVEN...NORTH MANCHESTER...OSSIAN...
PAULDING...PERU...PORTLAND...ROANOKE...SHERWOOD...SWANTON...
UPLAND...WABASH AND WAUSEON.
$$
OHC003-137-161-110000-
/O.CON.KIWX.SV.A.0406.000000T0000Z-130711T0000Z/
SEVERE THUNDERSTORM WATCH 406 REMAINS VALID UNTIL 8 PM EDT THIS
EVENING FOR THE FOLLOWING AREAS
IN OHIO THIS WATCH INCLUDES 3 COUNTIES
IN NORTHWEST OHIO
ALLEN OH PUTNAM VAN WERT
THIS INCLUDES THE CITIES OF...BLUFFTON...DELPHOS...
FORT JENNINGS...KALIDA...LIMA...OHIO CITY...OTTAWA...PANDORA...
SPENCERVILLE AND VAN WERT.
Category Archives: SKYWARN
Flood advisory issued for Allen County, Indiana
 |
| The flood advisory is for the area outlined in green. |
FLOOD ADVISORY
NATIONAL WEATHER SERVICE NORTHERN INDIANA
202 PM EDT WED JUL 10 2013
INC003-101930-
/O.NEW.KIWX.FA.Y.0041.130710T1802Z-130710T1930Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEN IN-
202 PM EDT WED JUL 10 2013
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED AN
* URBAN AND SMALL STREAM FLOOD ADVISORY FOR...
SOUTHERN ALLEN COUNTY IN NORTHEAST INDIANA
* UNTIL 330 PM EDT
* AT 200 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER FORT WAYNE MOVING
SOUTHEAST AT 35 MPH. DOPPLER RADAR ESTIMATED OVER AN INCH OF RAIN
HAS FALLEN IN SOUTHWEST ALLEN COUNTY OVER THE PAST HOUR RESULTING
IN FLOODING OF STREETS AND LOW LYING AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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. MOVE TO HIGHER GROUND.
TO REPORT FLOODING...POST YOUR INFORMATION ON THE NATIONAL WEATHER
SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON TWITTER
WITH THE HASHTAG... #NWSIWX.
Storm watch likely by 1 p.m. EDT
MESOSCALE DISCUSSION 1368
NWS STORM PREDICTION CENTER NORMAN OK
1153 AM EDT WED JUL 10 2013
AREAS AFFECTED...NRN IND...NW OH AND SRN LOWER MI
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 101553Z - 101700Z
PROBABILITY OF WATCH ISSUANCE...80 PERCENT
SUMMARY...A SEVERE THREAT IS EXPECTED TO DEVELOP ACROSS NRN IND...NW
OH AND SRN LOWER MI THIS AFTERNOON. WIND DAMAGE...LARGE HAIL AND AN
ISOLATED TORNADO COULD OCCUR WITH THE STRONGER CELLS. WW ISSUANCE
WILL BE LIKELY ACROSS THE REGION OVER THE NEXT HOUR.
No NOAA Weather Radio test today
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1049 AM EDT WED JUL 10 2013 /949 AM CDT WED JUL 10 2013/
...WEEKLY TEST OF THE NOAA WEATHER RADIO POSTPONED...
...FORT WAYNE NOAA WEATHER RADIO BROADCAST WILL BE DOWN FOR
REPAIRS THURSDAY MORNING...
DUE TO THE THREAT OF SEVERE WEATHER TODAY...THE WEEKLY TEST OF THE
NOAA WEATHER RADIO IS POSTPONED. THE TEST WILL BE CONDUCTED ON
THURSDAY BETWEEN 11 AM AND NOON EDT FOR THE FOLLOWING
TRANSMITTERS...KJY-62 AT 162.500 MHZ FROM LAPORTE...WXJ-57 AT
162.400 MHZ FROM SOUTH BEND...AND WXI-94 AT 162.425 MHZ FROM
ANGOLA.
THE FORT WAYNE NOAA WEATHER RADIO BROADCAST...WXJ-58 AT 162.550
MHZ...WILL BE DOWN FOR ANTENNA REPAIRS BEGINNING THURSDAY JULY
11TH DURING THE MORNING HOURS. THIS MAINTENANCE WILL REPAIR THE
LOW POWER AND DEGRADED SIGNAL ISSUES THAT THE TRANSMITTER HAS BEEN
EXPERIENCING OVER THE PAST TWO WEEKS. DUE TO THE REPAIRS...THE
WEEKLY TEST WILL NOT BE CONDUCTED FOR THE FORT WAYNE TRANSMITTER
ON THURSDAY. IF THE SCHEDULED MAINTENANCE IS COMPLETED...THE TEST
MAY BE CONDUCTED ON FRIDAY JULY 12TH BETWEEN 11 AM AND NOON EDT
FOR THE FORT WAYNE TRANSMITTER.
THIS STATEMENT WILL BE UPDATED WHEN FURTHER INFORMATION BECOMES
AVAILABLE.
Hazardous Weather Outlook updated — Spotter activation might be needed
SKYWARN storm spotter activation might be needed today, according to an updated Hazardous Weather Outlook that the northern Indiana National Weather Service office issued at 10:16 a.m.
Severe thunderstorm watch possible by late morning
There is a 40 percent chance of a severe thunderstorm watch for much of Indiana and western Ohio (see map above) as early as late this morning, according to a mesoscale discussion that the National Weather Service Storm Prediction Center (SPC) issued at 8:57 a.m.
Slight risk again today
 |
| Yellow area: Slight risk of severe thunderstorms. Green area: Non-severe thunderstorms. |
There is a slight risk of severe thunderstorms again today in most of Indiana and pretty much all of Ohio, according to the Day 1 Convective Outlook that the National Weather Service Storm Prediction Center issue at 8:52 a.m. EDT. The slight risk area includes All of Allen County and most of its surrounding counties. It includes all of the Indiana and Ohio counties in IMO SKYWARN quadrant two.
Within the slight risk area, in Adams, Wells, Blackford, Jay, Van Wert, Putnam and Allen (Ohio) Counties, there is a 30 percent probability of damaging thunderstorm winds or wind gusts of 50 knots (58 mph) or higher within 25 miles of a point. Elsewhere in the slight risk area, that probability is 15 percent.
Throughout the slight risk area, there is a 15 percent probability of one inch diameter hail or larger and a two percent probability of a tornado within 25 miles of a point.
Now, a bit of meteorology. Here’s why the SPC thinks severe weather is possible: A surface cold front, stretching from northern Missouri to Northwestern lower Michigan as of 8 a.m. EDT, will progress southeastward across Missouri, Illinois, Indiana and lower Michigan today. A moist air mass is in place in advance of the cold front. The rich moisture will combine with daytime heating to rather quickly make thunderstorm development possible today ahead of the cold front. Ongoing thunderstorms across western and northern Illinois will likely expand eastward in coverage and intensify by midday and/or early afternoon along and immediately ahead of the front. Atmospheric conditions — especially high instability (mixed layer convective available potential energy of 3,000 joules per kilogram) and strong changes in wind speed and direction with altitude will support organized multi-cell clusters and/or line segments, and potentially some supercell structures. Damaging winds and some large hail will be the primary severe storm risks during the afternoon.
Stay alert today for possible severe thunderstorm watches and warnings in the slight risk area.
Risk of severe weather fades
Severe thunderstorms are unlikely in northern Indiana, southern lower Michigan and northwestern Ohio this evening and tonight, according to a Area Forecast Discussion that the northern Indiana National Weather Service office issued at 4:56 p.m. EDT. Meteorologists explained that atmospheric conditions (especially the rate at which the temperature falls with altitude) are inhibiting thunderstorm growth.
Heavy rainfall nonetheless remains possible, so be alert for possible flash flood watches and/or warnings.
SPC: Storm watch possible this afternoon
There’s a 40 percent chance that the National Weather Service (NWS) will issue a storm watch for northeastern Indiana and much of Ohio (see map above) this afternoon, according to a mesoscale discussion that the NWS Storm Prediction Center (SPC) issued at 2:33 p.m. EDT. SPC meteorologists indicated that a threat of isolated severe storms might develop this afternoon, with straight-line wind damage and hail being the primary threats. The SPC said it will continue to monitor the situation for the possibility of issuing a watch later this afternoon.
Slight risk expands, covers most of Indiana & Ohio
Almost all of Indiana and Ohio are now at slight risk of severe weather, according to the updated Day 1 Convective Outlook that the National Weather Service (NWS) Storm Prediction Center (SPC) issued at 12:29 p.m. The expanded slight risk area includes all Indiana, Ohio and Michigan counties served by the northern Indiana NWS office.
The entire slight risk area (depicted in the map at left) has a 15 percent probability of either of the following within 25 miles of any point:
- Damaging thunderstorm winds or wind gusts of 58 mph or greater.
- Hail of 1 inch diameter or larger.
In addition, a large part of northern Indiana has a two percent probability of a tornado within 25 miles of a point.
SPC meteorologists indicated that a moist and quite unstable air mass over Indiana, plus strong surface heating, could result in scattered thunderstorm development this afternoon, including isolated severe storms capable of damaging winds and hail.
SPC will next update its convective outlook at around 4 p.m. EDT.