Minnesota, 2013Excessive Heat in Minnesota, August 25 to 29, 2013
August 25 to 29, 2013 · NWS MPX · 30 events in 30 counties and zones
A large ridge of high pressure built across the central part of the United States during the last week of August. Heat and humidity increased across the Upper Midwest starting the weekend of August 25th, and lasted until the latter part of the week with a string of 90+ afternoon temperatures, combined with dew points in the 70s, caused heat indices to rise above 100 degrees from Sunday, through…
Every event with a place to put it; 30 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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- Deaths
- 0
- Injuries
- 244
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 30
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
A large ridge of high pressure built across the central part of the United States during the last week of August. Heat and humidity increased across the Upper Midwest starting the weekend of August 25th, and lasted until the latter part of the week with a string of 90+ afternoon temperatures, combined with dew points in the 70s, caused heat indices to rise above 100 degrees from Sunday, through Tuesday, August 27th. In the Twin Cities metro area, heat indices remained above 80 degrees overnight, and afternoon heat indices continued above 100 degrees through Thursday afternoon, August 29th. There were not any reports of deaths due to heat as a primary or contributing factor.
The Minnesota State Fair was going on during the time period. 216 people required treatment at medical stations at the fair for heat related illnesses, 10 of whom were transported to local area hospitals. In addition, several record high temperatures were observed, and a dew point temperature of 77 degrees on August 27th at 3:00 PM tied the MSP high dewpoint temperature record set on August 27, 1990. It also tied the record for highest dewpoint ever during the State Fair (77 degrees - August 28, 1955 and August 27, 1990). Minneapolis schools canceled all outdoor after-school athletics practices during this period. The August 26th high of 96 degrees in the Twin Cities broke the 94-degree record set in 1948.
In Hennepin County, from the 25th through the 29th, there were 28 people who were treated for heat related illnesses, either as walk-ins at emergency rooms, or transported by ambulance to hospitals. There were no known reports of heat illnesses treated outside Hennepin or Ramsey Counties.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before the first event at Aug 25, 12:17 PM CST, 43 minutes earlier.
Area forecast discussion, Aug 25, 12:17 PM CST, 43 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
117 PM CDT SUN AUG 25 2013
.UPDATE...
ISSUED AT 1249 PM CDT SUN AUG 25 2013
WEAK SFC TROUGH EXTENDS FROM NEAR ABR UP TOWARD LAKE OF THE WOODS.
THIS BOUNDARY WILL SAG EVER SO SLOWLY SOUTH THROUGH THE
AFTERNOON. TEMP/DEWP FORECAST HAS BEEN RIGHT ON TRACK
TODAY...WHICH MEANS WE ARE ON OUR WAY TO MLCAPE OF 4000-5000 J/KG
THIS AFTERNOON AHEAD OF THIS BOUNDARY THANKS TO STEEPENING MID
LEVEL LAPSE RATE MOVING IN FROM THE DAKOTAS. STILL LOTS OF
UNCERTAINTY AS TO WHERE/IF CONVECTION WILL FIRE THIS AFTERNOON AS
ALL HI-RES MODELS TELL THEIR OWN STORY.
AT THIS POINT...FOLLOWING THE IDEA THAT STORMS WILL INITIATE
BETWEEN 21Z AND 00Z NORTH OF THE MPX AREA ANYWHERE FROM THE
FARGO AREA EAST TO THE U.P. OF MICH. THIS WOULD BE ON THE NRN
EDGE OF THE LLJ AND CAPPING EML AS WELL. AFTER 00Z IS WHEN THE
ACTIVITY WOULD BEGIN IMPACT THE MPX AREA. STILL HAVE HIGHEST POPS
IN THE EAST...WHERE THE GFS/NAM WANT TO SHOW STORMS COMING DOWN
FROM NRN WI OVERNIGHT. THERE HAS BEEN FAIRLY GOOD RUN-TO-RUN
CONSISTENCY WITH BOTH MODELS ON THIS SCENARIO PLAYING OUT...SO
WILL CONTINUE THE LIKELY POPS OUT THERE.
SHEAR LOOKS TO BE MINIMAL /UNDER 20KTS/ AND WITH THE ATMOSPHERE AS
WARM AND MOIST AS IT IS...LARGE HAIL WILL BE A TOUGH TASK TO
ACCOMPLISH...BUT WITH DCAPE ALREADY IN EXCESS OF 1500 J/KG...THERE
WILL BE A WIND THREAT WITH ANY MORE ROBUST CONVECTION THAT
DEVELOPS.
18Z AVIATION DISCUSSION ADDED BELOW
&&
.SHORT TERM...(THIS EVENING THROUGH SUNDAY)
ISSUED AT 315 AM CDT SUN AUG 25 2013
THE HIGHLY ADVERTISED HEAT WAVE WILL SHOW ITS FACE TODAY...AS
TEMPERATURES INCREASE WELL INTO THE 90S AND CAUSE HEAT INDICES TO
SOAR TO BETWEEN 100 AND 110 DEGREES ACROSS NEARLY THE ENTIRE COUNTY
WARNING FORECAST AREA. REVISED HEAT INDEX FORECASTS NOW POINT TO A
GREATER PORTION OF THE CWFA MEETING EXCESSIVE HEAT WARNING CRITERIA
/ESSENTIALLY 105+ HEAT INDICES OVER A TWO OR MORE DAY
PERIOD...COMBINED WITH ELEVATED NIGHTTIME INDICES AROUND 75 DEGREES
OR GREATER/. THE WARNING WILL NOW EXTEND WEST AND SOUTH FROM THE TC
METRO AREA TO THE SD/IA BORDERS. OF LESSER CONCERN TODAY...ALBEIT
STILL NOTABLE...WILL BE THE BREEZY SOUTHWEST WINDS OF 15 TO 25 MPH.
THE LESS MARKETED CONCERN OF LATE...THAT IS NOW DESERVING GREATER
ATTENTION...IS THE SEVERE WEATHER POTENTIAL FOR LATE THIS AFTERNOON
AND EVENING. THE LLJ/WAA-INDUCED STORMS NOTED ACROSS ND AND NERN MN
AT 3 AM CDT ARE EXPECTED TO EXPAND EAST AND SLIGHTLY SOUTHEAST THIS
MORNING...BUT EXPECT THE CAP TO QUICKLY BUILD IN AFTER SUNRISE AND
SHIELD THE AREA FROM MORNING ACTIVITY. HOWEVER...A MID-LEVEL IMPULSE
TRAVERSING THE NORTHERN PERIPHERY OF THE UPPER RIDGE WILL TRACK FROM
THE FOUR CORNERS REGION TO REACH CENTRAL MN BY THIS EVENING. IT IS
UNDENIABLE THAT THERE WILL BE A HEALTHY CAP IN PLACE FOR A GOOD
PORTION OF THE DAY. HOWEVER...AS THE CONVECTIVE TEMP /CIRCA 100
DEGREES/ IS ACHIEVED...THE AFOREMENTIONED IMPULSE WILL HELP TO
COMBAT SAID CAP...AND COMBINE WITH A HIGHLY UNSTABLE SURFACE AIR-MASS
AND WEAK CONVERGENCE ALONG THE SURFACE BOUNDARY DRAPED ACROSS
CENTRAL MN TO INITIATE THUNDERSTORMS BY 00Z MONDAY.
FURTHERMORE...THE LLJ WILL BE ON THE INCREASE DURING THE EARLY
EVENING...WHICH WILL RENEW SUPPORT FOR MORE WIDESPREAD DEVELOPMENT
/POSSIBLE MCS/ TONIGHT. HAVE CENTERED LIKELY POPS GENERALLY
ALONG/NORTH OF INTERSTATE 94 BETWEEN 00Z AND 09Z MONDAY.
.LONG TERM...(MONDAY THROUGH SATURDAY)
ISSUED AT 315 AM CDT SUN AUG 25 2013
MAIN CHG TO THIS FORECAST PACKAGE TO THE EXTENDED THE EXCESSIVE
HEAT WARNING ACROSS ALL OF SOUTHERN MN...AND PORTIONS OF WC MN
STARTING MONDAY...THRU TUESDAY NIGHT.
ALTHOUGH THERE REMAINS SOME MINOR DETAILS ON PRECIPITATION CHC/S
AND THE AMT OF CLOUD COVER EXPECTED...85H TEMPS HAVE NEARLY
REMAINED THE SAME MONDAY/TUESDAY AFTN. THE 85H THERMAL RIDGE IS
AIMING TOWARD SOUTHERN MN WHICH LEADS TO HIGHER...OR THE POTENTIAL
OF HIGHER TEMPS THAN EARLIER EXPECTED. WITH DEW PTS REMAINING IN
THE LOW 70S...AND TEMPS A FEW DEGREES HIGHER...HEAT INDICES FOR
BOTH MONDAY/TUESDAY WILL BE AT OR ABV 105 DEGREES ACROSS MOST OF
SOUTHERN MN. THEREFORE...BASED ON GUIDANCE AND CRITERIA FOR A HEAT
WARNING...THE EXCESSIVE HEAT WARNING HAS BEEN EXTENDED FOR AREAS
ALONG HIGHWAY 12 FROM APPLETON CITY TO THE NORTHERN PART OF THE
TWIN CITIES...SOUTHWARD TO THE IOWA BORDER MON/TUE.
BY TUESDAY EVENING...THE FRONTAL BOUNDARY WILL MOVE SOUTH ENOUGH
TO COOL 85H TEMPS TO MORE REASONABLE READINGS...BUT STILL HOLDING
AFTN TEMPS WEDNESDAY AROUND 90 DEGREES. A BIT COOL CONDS ARE
EXPECTED THU/FRIDAY...BUT ANOTHER WARMUP WILL OCCUR NEXT
WEEKEND...BUT IT SHOULD NOT BE AS WARM AS THE NEXT COUPLE OF DAYS
AS THE MAIN CORE OF THE WARM AIR MASS REMAINS JUST TO THE SOUTH
AND WEST OF THE FA. THERE IS SOME INDICATIONS THAT THE MAIN UPPER
RIDGE ACROSS THE CENTRAL U.S. WILL BEGIN TO BREAK DOWN BY LATE
NEXT WEEKEND...AND INTO THE FIRST WEEK OF SEPTEMBER. THE OVERALL
5-DAY MEAN 50H HEIGHTS DO SHOW A SLOW WEAKENING OF THIS UPPER
RIDGE ACROSS THE CENTRAL OF THE COUNTRY ALONG WITH A FAIRLY STRONG
TROUGH ACROSS THE PACIFIC NW MOVING EASTWARD ALONG THE CANADA/U.S.
BORDER.
RAINFALL WILL LIKELY BE CONFINED TO THE NORTHERN EDGE OF THE 50H
RIDGE FOR THIS WEEK. THIS WILL LEAD TOWARD HIGHER POPS ACROSS
NORTHERN MN/NORTHERN WISCONSIN...AND LITTLE IN THE WAY OF RAINFALL
CHC/S IN SOUTHERN MN.
&&
.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON)
ISSUED AT 1249 PM CDT SUN AUG 25 2013
BIGGEST SOURCE OF UNCERTAINTY REMAINS WITH IF/WHERE CONVECTION
WILL BE THIS EVENING/OVERNIGHT. LOOKING AT WHERE THE WEAK SFC
TROUGH MENTIONED IN THE UPDATE IS EXPECTED TO BE...ALONG WITH
FORECAST LLJ PLACEMENT...PROBABILITY FOR SEEING CONVECTION TONIGHT
WILL BE BEST ALONG/NORTH OF 94. CONFIDENCE IN STORMS TONIGHT STILL
LOW ENOUGH THAT HELD ANY TS MENTION TO A VC OR PROB30. WITH THAT
TROUGH SETTLING INTO CENTRAL MN OVERNIGHT...WINDS THERE WILL CALM
DOWN CONSIDERABLY...AND WITH DEWPOINTS IN THE UPPER 60S/LOWER 70S
HZ/BR WILL LIKELY BECOME AN ISSUE TOWARD SUNRISE THERE.
KMSP...12Z TAF STILL LOOKED GOOD FOR TIMING OF ANY CONVECTION THIS
EVENING. CONFIDENCE HAS NOT INCREASED ENOUGH TO GO WITH ANYTHING
MORE THAN THE PROB30 AT THIS POINT. IF WE DO NOT SEE ANY
CONVECTION OVERNIGHT...THEN THE HIGH MOISTURE CONTENT AT LOWER
LEVELS WILL LIKELY LEAD TO SOME MINOR ISSUES WITH HAZE MONDAY
MORNING. ANY CONVECTION POSSIBILITIES MONDAY AFTERNOON WILL DEPEND
HEAVILY ON HOW FAR SOUTH ANY CONVECTION TONIGHT CAN PUSH THE
BOUNDARY HEADING FOR CENTRAL MN. THIS FAR OUT...HAVE LEFT ANY
ADDITIONAL TS MENTION OUT...BUT WILL BE SOMETHING TO KEEP AN EYE
ON.
/OUTLOOK FOR KMSP/
TUE...VFR. WIND SW 5-10 KT...BECOMING W/NW IN AFTERNOON.
WED...VFR. WIND NE 5 KT.
THU...VFR. ISOLD SHRA/TS POSSIBLE. WINDS SE 5 KTS.
&&
.MPX WATCHES/WARNINGS/ADVISORIES...
MN...EXCESSIVE HEAT WARNING UNTIL MIDNIGHT CDT TUESDAY NIGHT FOR
MNZ054>070-073>078-082>085-091>093.
HEAT ADVISORY UNTIL MIDNIGHT CDT TUESDAY NIGHT FOR MNZ041>045-
047>053.
WI...HEAT ADVISORY UNTIL MIDNIGHT CDT TUESDAY NIGHT FOR WIZ014>016-
023>028.
&&
UPDATE...MPG
SHORT TERM...LS
LONG TERM...JLT
AVIATION...MPGHazardous weather outlook, Aug 25, 12:34 PM CST, 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
134 PM CDT SUN AUG 25 2013
MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
261845-
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-
134 PM CDT SUN AUG 25 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA... AND WEST CENTRAL WISCONSIN.
.DAY ONE...THIS AFTERNOON AND TONIGHT
AFTERNOON HEAT INDICES WILL RISE INTO THE 100 TO 107 RANGE ACROSS
PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA...AS WELL AS WEST
CENTRAL WISCONSIN.
THUNDERSTORMS WILL BE POSSIBLE THIS EVENING AND OVERNIGHT ACROSS
PORTIONS OF CENTRAL MINNESOTA INTO WESTERN WISCONSIN. IF STORMS DO
DEVELOP...THERE WHERE WILL BE A POTENTIAL FOR SOME OF THEM TO BE
SEVERE...PRODUCING DAMAGING WINDS AND LARGE HAIL.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
HEAT INDICES OF 100 TO 110 DEGREES ARE EXPECTED ACROSS THE REGION
MONDAY AND TUESDAY. IN ADDITION...OVERNIGHT LOW TEMPERATURES ARE
FORECAST TO REMAIN ELEVATED IN THE 70S TO AROUND 80.
AFTER A SLIGHT COOL DOWN WEDNESDAY AND THURSDAY...IT IS LOOKING
INCREASINGLY LIKELY THAT DANGEROUS LEVELS OF HEAT AND HUMIDITY
WILL RETURN AGAIN FRIDAY...LASTING THROUGH MUCH OF THE LABOR DAY
WEEKEND.
THUNDERSTORMS WILL BE POSSIBLE MONDAY EVENING THROUGH TUESDAY
MORNING ACROSS PORTIONS OF THE AREA. SEVERE THUNDERSTORMS ARE
POSSIBLE.
THUNDERSTORMS WILL BE POSSIBLE AGAIN THURSDAY AND FRIDAY. THE THREAT
OF SEVERE THUNDERSTORMS IS LOW.
.SPOTTER INFORMATION STATEMENT...
SKYWARN SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.
Excessive Heat, Lac Qui Parle
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Lac Qui Parle forecast zone
- Reported by
- AWOS
- Coordinates
- 44.996, -96.173 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 60s and 70s.
Excessive Heat, Anoka
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Anoka forecast zone
- Reported by
- County Official
- Coordinates
- 45.273, -93.246 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 60s and 70s.
Excessive Heat, Blue Earth
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Blue Earth forecast zone
- Reported by
- County Official
- Coordinates
- 44.035, -94.067 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday evening before temperatures fell into the 70s.
Excessive Heat, Brown
- When
- August 25, 1:00 PM CST to August 28, 6:00 PM CST
- Where
- Brown forecast zone
- Reported by
- County Official
- Coordinates
- 44.242, -94.727 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday evening before temperatures fell into the 70s.
Excessive Heat, Carver
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Carver forecast zone
- Reported by
- County Official
- Coordinates
- 44.821, -93.803 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s.
Excessive Heat, Chippewa
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Chippewa forecast zone
- Reported by
- County Official
- Coordinates
- 45.022, -95.567 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Dakota
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Dakota forecast zone
- Reported by
- County Official
- Coordinates
- 44.672, -93.065 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s.
Excessive Heat, Faribault
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Faribault forecast zone
- Reported by
- County Official
- Coordinates
- 43.674, -93.948 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Freeborn
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Freeborn forecast zone
- Reported by
- County Official
- Coordinates
- 43.674, -93.349 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Goodhue
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Goodhue forecast zone
- Reported by
- County Official
- Coordinates
- 44.410, -92.723 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Hennepin
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Hennepin forecast zone
- Injuries
- 28 direct, 0 indirect
- Reported by
- County Official
- Coordinates
- 45.005, -93.477 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As the dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the night, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s. From the 25th through the 29th, there were 28 people in Hennepin County who were treated for heat related illnesses, either as walk-ins at emergency rooms, or transported by ambulance to hospitals.
Excessive Heat, Kandiyohi
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Kandiyohi forecast zone
- Reported by
- County Official
- Coordinates
- 45.152, -95.005 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Le Sueur
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Le Sueur forecast zone
- Reported by
- County Official
- Coordinates
- 44.371, -93.730 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Martin
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Martin forecast zone
- Reported by
- County Official
- Coordinates
- 43.674, -94.551 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, McLeod
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- McLeod forecast zone
- Reported by
- County Official
- Coordinates
- 44.824, -94.272 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Meeker
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Meeker forecast zone
- Reported by
- County Official
- Coordinates
- 45.123, -94.527 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Nicollet
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Nicollet forecast zone
- Reported by
- County Official
- Coordinates
- 44.350, -94.247 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Ramsey
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Ramsey forecast zone
- Injuries
- 216 direct, 0 indirect
- Reported by
- State Official
- Coordinates
- 45.017, -93.100 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As the dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the night, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s. 216 people were treated at State Fair medical aid stations for heat-related illnesses. Of those 216, 10 were transported to area hospitals.
Excessive Heat, Redwood
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Redwood forecast zone
- Reported by
- County Official
- Coordinates
- 44.404, -95.254 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Renville
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Renville forecast zone
- Reported by
- County Official
- Coordinates
- 44.727, -94.947 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Rice
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Rice forecast zone
- Reported by
- County Official
- Coordinates
- 44.354, -93.297 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Scott
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Scott forecast zone
- Reported by
- County Official
- Coordinates
- 44.649, -93.536 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s.
Excessive Heat, Sibley
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Sibley forecast zone
- Reported by
- County Official
- Coordinates
- 44.580, -94.232 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Steele
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Steele forecast zone
- Reported by
- County Official
- Coordinates
- 44.022, -93.226 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Swift
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Swift forecast zone
- Reported by
- County Official
- Coordinates
- 45.283, -95.681 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Waseca
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Waseca forecast zone
- Reported by
- County Official
- Coordinates
- 44.022, -93.587 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Washington
- When
- August 25, 1:00 PM CST to August 29, 6:00 PM CST
- Where
- Washington forecast zone
- Reported by
- County Official
- Coordinates
- 45.039, -92.884 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Thursday afternoon before temperatures fell into the 70s.
Excessive Heat, Watonwan
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Watonwan forecast zone
- Reported by
- County Official
- Coordinates
- 43.978, -94.614 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Wright
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Wright forecast zone
- Reported by
- County Official
- Coordinates
- 45.174, -93.963 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
Excessive Heat, Yellow Medicine
- When
- August 25, 1:00 PM CST to August 27, 6:00 PM CST
- Where
- Yellow Medicine forecast zone
- Reported by
- County Official
- Coordinates
- 44.716, -95.868 (the zone’s center; the record gives no point)
Temperatures across the area rose above 90 degrees during the afternoon of Sunday, August 25th. As dew point rose into the 70s, the heat indices surpassed 100 degrees for several hours during the afternoon, topping out around 105 degrees. During the evening, heat indices held above 80 degrees. The heat and humidity continued through Tuesday afternoon before temperatures fell into the 70s.
- Excessive Heat
- Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Dust Storm and Damaging Winds in Washington, August 25, 20131 death · 1 injured · $405,000 · 56 kt wind · 9 events
- Hail and Damaging Wind in Oregon, August 25, 20131 death · 1.75 in hail · 9 events
- Damaging Winds in Montana, August 25 to 26, 2013$33,000 · 52 kt wind · 9 events
- Flash Flood in California, August 25, 2013$25,000 · 1 event
- Marine Thunderstorm Winds in Lake Superior, August 25 to 26, 201356 kt wind · 10 events
- Hail and Damaging Winds in South Dakota, August 25, 20131 in hail · 5 events
- Hail and Damaging Wind in Minnesota, August 25, 20131.75 in hail · 5 events
- Damaging Winds in Washington, August 25, 201362 kt wind · 4 events
- Hail and Damaging Wind in Minnesota, August 25, 20131.75 in hail · 3 events
- Damaging Winds in North Dakota, August 25, 201355 kt wind · 2 events
- Marine Thunderstorm Winds in Gulf of Mexico, August 25, 20132 events
- Hail and Damaging Wind in Idaho, August 25, 2013$500 · 1 in hail · 2 events
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 473146, 473147, 473148, 473149, 473151, 473152, 473153, 473154, 473155, 473156, 473157, 473158, 473159, 473160, 473161, 473162, 473163, 473164, 473165, 473166, 473167, 473168, 473169, 473170, 473171, 473172, 473173, 473174, 473175, 473176.