Special Weather Statement, NWS Twin Cities, MN

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
513 AM CDT THU JUL 21 2016

.SHORT TERM...(Today and tonight)
Issued at 513 AM CDT Thu Jul 21 2016

Concerns early this morning have been with strong to severe
thunderstorms moving across the northern and eastern CWA overnight.
The storms originated back in ND last evening. Wind gusts in the
40 to 50 mph range have been common along the leading edge of the
storms. We're still dealing with a cluster of storms over central
MN that have a large hail threat. Going forward this morning, we
believe that skies will clear with the mid level cap reasserting
itself. However, the storms early this morning have certainly
taking their toll on the overnight lows...knocking temperatures
down into the 60s across central MN with near 70 in the Twin
Cities. This has lowered our confidence on being able to achieve
highs in the middle to upper 90s this afternoon with quite a bit
of recovery that needs to take place. However, it's too soon to
throw in the towel with our heat headlines with peak heating not
taking place until around 5 pm. Hence, the heat headlines remain
in place with afternoon heat indices reaching 100 to 110 degrees.

This brings up another concern/problem for late in the day/evening.
A cold front will be sagging slowly south into central mn and
adjoining areas of west central WI late this afternoon. Several
CAMS are showing thunderstorms developing along the front. We
added some small pops to account for this but pops may need to be
raised much higher after seeing what occurred overnight even
though mid level temperatures were in the +14 to +16 degree range
over a wide area. Can't really say it's going to be cooler tonight
after the storms this morning, but lows tonight are progged from
the lower 60s in central MN to the lower 70s in southern MN.

.LONG TERM...(Friday through Wednesday)
Issued at 513 AM CDT Thu Jul 21 2016

Excessive heat on friday and severe thunderstorms Saturday into
Sunday are the main concerns in the long term.

Friday will mark the end of the heat wave with highs topping out
in the lower to middle 90s. Fortunately the 70+ degree dew points
are expected to be confined to south central MN with middle to
upper 60s to the north. This yields heat indices Friday afternoon
in the 100 to 105 range across south central and portions of west
central MN with around 100 degrees for the Twin Cities. Therefore,
the excessive heat warning for these areas is still valid and will
remain in effect. Areas of central Minnesota and west central
Wisconsin have heat indices in the lower to middle 90s which is
borderline heat advisory criteria. However, if the high
temperature forecast is too warm on Friday, then all heat indices
values will be lower. Hence, left the headlines alone for now.

Thunderstorms will return on Saturday as a warm front lifts
northeast across the FA. The timing is a little slower and it may
take until afternoon until thunderstorms get underway. Heading
into the evening and overnight hours, a cold front will be pushing
in from the Dakotas with more thunderstorm development likely. Any
of the storms Saturday and Saturday night could be severe. In
addition, PWAT values will climb back above 2 inches and heavy
rainfall will likely occur with some of the storms leading to a
flooding threat.

Seasonal temperatures will prevail next week with thunderstorm
chances returning Tuesday and Wednesday.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1110 PM CDT Wed Jul 20 2016

Keeping a close eye on the potential for thunderstorms overnight.
Have tweaked the area for thunderstorm chances a bit farther south
overnight, but still banking on the mid level cap to suppress
activity from expanding as far south as KMSP. Still expect KRNH
and KEAU to have a slightly better chance due to their proximity
on the edge of the mid level CAP, so have included Prob30 chances
for 10z-13z Thu. Have also included a mention of MVFR cigs, given
the deck of clouds circa 2KFT that developed from central MN into
central WI. Sct-bkn mid/high clouds are expected to prevail
Thursday as the heat builds. Southeast winds 7-10 kts shift to
south then southwest on Thursday.

KMSP...
As mentioned above, currently anticipate the area of SHRA/TS to
stay north/east of the site, but it is a low confidence forecast.
MVFR bkn layer will fleet in and out of KMSP overnight as well.

/OUTLOOK FOR KMSP/
Thu...VFR. Wind SSW at 5-10kts.
Fri...VFR. Chc -TSRA late. Wind SE 5 kt.
Sat...VFR. Chc -TSRA late. Wind S-SE 5-10 kt.

&&

.MPX Watches/Warnings/Advisories...
WI...Excessive Heat Warning until 7 PM CDT Friday for WIZ024-026.

     Excessive Heat Warning from noon today to 10 PM CDT this evening
     for WIZ014>016-023-025-027-028.

MN...Excessive Heat Warning until 7 PM CDT Friday for MNZ054-056-
     060>070-073>078-082>085-091>093.

     Excessive Heat Warning until 10 PM CDT this evening for
     MNZ041>045-047>053-055-057>059.

&&

SHORT TERM...RAH
LONG TERM...RAH
AVIATION...LS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
453 AM CDT THU JUL 21 2016

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
221000-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
453 AM CDT THU JUL 21 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MINNESOTA...EAST CENTRAL MINNESOTA...SOUTH CENTRAL MINNESOTA...
SOUTHEAST MINNESOTA...SOUTHWEST MINNESOTA...WEST CENTRAL
MINNESOTA...NORTHWEST WISCONSIN AND WEST CENTRAL WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS WILL OCCUR THIS MORNING. A FEW OF THE
STORMS MAY BE SEVERE ACROSS CENTRAL MINNESOTA AND WEST CENTRAL
WISCONSIN.

IT WILL BE HOT AND HUMID THIS AFTERNOON WITH HEAT INDICES FROM
100 TO 110 DEGREES. THE RISK FOR HEAT ILLNESS WILL INCREASE FOR
THOSE OUTDOORS FOR PROLONGED PERIODS OF TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

DANGEROUS HEAT WILL PERSIST ON FRIDAY ACROSS SOUTHERN MINNESOTA
WITH AFTERNOON HEAT INDICES FROM 100 TO 105 DEGREES.

THERE ARE CHANCES FOR THUNDERSTORMS SATURDAY INTO SUNDAY. A FEW OF
THE STORMS COULD BE SEVERE...ESPECIALLY SATURDAY AFTERNOON AND
NIGHT. THERE IS ALSO A THREAT FOR HEAVY RAINFALL.

MORE THUNDERSTORMS ARE POSSIBLE TUESDAY AND WEDNESDAY. THE THREAT
FOR SEVERE WEATHER WITH THESE STORMS IS LOW AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED EARLY THIS MORNING.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
434 AM CDT THU JUL 21 2016

MNZ063-067-069-070-074>078-083>085-WIZ024-211030-
SCOTT-SIBLEY-BROWN-WASHINGTON-DAKOTA-NICOLLET-GOODHUE-RICE-WASECA-
BLUE EARTH-STEELE-LE SUEUR-PIERCE-
434 AM CDT THU JUL 21 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN BROWN...
DAKOTA...NORTHERN WASECA...SOUTHERN WASHINGTON...NORTHWESTERN
STEELE...SOUTHERN SIBLEY...NORTHERN BLUE EARTH...SCOTT...NICOLLET...
RICE...NORTHWESTERN GOODHUE...LE SUEUR AND CENTRAL PIERCE COUNTIES...

AT 434 AM CDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR COTTAGE GROVE TO NEAR BELLE PLAINE
TO NEAR ST GEORGE. MOVEMENT WAS SOUTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MANKATO...FARIBAULT...NORTHFIELD...RED WING...NEW ULM...EAGAN...
BURNSVILLE...LAKEVILLE...APPLE VALLEY...COTTAGE GROVE...
INVER GROVE HEIGHTS AND SAVAGE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 49 AND 88.
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 300 AND 302.
 U.S. HIGHWAY 14 BETWEEN MILE MARKERS 97 AND 151.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 45 AND 94.
 U.S. HIGHWAY 61 BETWEEN MILE MARKERS 88 AND 127.

LAT...LON 4446 9485 4445 9463 4449 9462 4461 9382
      4486 9295 4477 9213 4475 9214 4421 9307
      4404 9401
TIME...MOT...LOC 0934Z 314DEG 44KT 4484 9287 4456 9376 4442 9464

SPD

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
500 AM CDT THU JUL 21 2016

MNZ042-211045-
TODD-
500 AM CDT THU JUL 21 2016

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL TODD COUNTY...

AT 500 AM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER EAGLE
BEND...OR 23 MILES NORTHEAST OF ALEXANDRIA...MOVING EAST AT 30 MPH.

NICKEL SIZE HAIL IS POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BROWERVILLE...CLARISSA...EAGLE BEND...PHILBROOK AND CLOTHO.

THIS INCLUDES U.S. HIGHWAY 71 BETWEEN MILE MARKERS 188 AND 211.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4629 9471 4599 9470 4599 9515 4625 9515
TIME...MOT...LOC 1000Z 276DEG 28KT 4614 9503

SPD

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
525 AM CDT THU JUL 21 2016

MNZ078-WIZ023>028-211130-
GOODHUE-PEPIN-ST. CROIX-DUNN-EAU CLAIRE-PIERCE-CHIPPEWA-
525 AM CDT THU JUL 21 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL GOODHUE...
SOUTHEASTERN ST. CROIX...DUNN...EAU CLAIRE...PEPIN...PIERCE AND
SOUTHERN CHIPPEWA COUNTIES...

AT 525 AM CDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR BLOOMER TO NEAR VASA. MOVEMENT WAS
SOUTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
EAU CLAIRE...RED WING...MENOMONIE...CHIPPEWA FALLS...ALTOONA...LAKE
HALLIE...ELLSWORTH...LAKE WISSOTA...DURAND...AUGUSTA...FALL CREEK AND
GOODHUE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 94 IN WISCONSIN BETWEEN MILE MARKERS 26 AND 86.
 U.S. HIGHWAY 53 BETWEEN MILE MARKERS 86 AND 97.
 U.S. HIGHWAY 61 BETWEEN MILE MARKERS 75 AND 102.

LAT...LON 4460 9200 4456 9204 4441 9209 4445 9224
      4445 9243 4437 9243 4437 9254 4431 9255
      4444 9295 4517 9193 4493 9147 4488 9092
      4460 9093
TIME...MOT...LOC 1025Z 295DEG 43KT 4506 9154 4445 9276

SPD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
531 AM CDT THU JUL 21 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0508 AM     TSTM WND DMG     RICE LAKE               45.50N 91.74W
07/21/2016                   BARRON             WI   TRAINED SPOTTER

            TREES/BRANCHES DOWN IN TOWN AS WELL AS ON
            HWY SS 1 MILE E OF TOWN. .

&&

MKM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
533 AM CDT THU JUL 21 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0458 AM     TSTM WND DMG     5 W HAUGEN              45.61N 91.88W
07/21/2016                   BARRON             WI   TRAINED SPOTTER

            TREE DOWN ON ROAD.

&&

MKM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
626 AM CDT THU JUL 21 2016

MNZ043-050-211200-
BENTON-MORRISON-
626 AM CDT THU JUL 21 2016

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MORRISON AND
NORTHEASTERN BENTON COUNTIES...

AT 626 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR BUCKMAN...OR
17 MILES SOUTHEAST OF LITTLE FALLS...MOVING EAST AT 45 MPH.

WINDS IN EXCESS OF 30 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
GRANITE LEDGE...MORRILL...BUCKMAN...LITTLE ROCK...GENOLA AND RUM
RIVER.

LAT...LON 4595 9377 4577 9377 4580 9415 4597 9415
TIME...MOT...LOC 1126Z 280DEG 38KT 4588 9403

SPD