Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 72, NWS Twin Cities, MN

July 26, 2014Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 26, 2014, 4:23 PM CDT for Morrison County, Minnesota. It was in force for 17 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
Jul 26, 2014, 4:23 PM CDT (21:23 UTC)
Expired
Jul 26, 2014, 4:40 PM CDT
In force
17 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 155 km from the middle of the area, began a volume at 21:24 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

TimeReportWhereRemark
Jul 26, 4:30 PM CDTHAIL 15 W Harding, MNLATE REPORT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.4 hours before the alert went out and 154 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2014-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 45 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2014-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -115 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
45 J/kg
Mixed-layer CIN
-311 J/kg
Mixed-layer LCL
1495 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-115 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

880 
WUUS53 KMPX 262123
SVRMPX
MNC097-262200-
/O.NEW.KMPX.SV.W.0072.140726T2123Z-140726T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
423 PM CDT SAT JUL 26 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 500 PM CDT

* AT 420 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CAMP
  RIPLEY...AND MOVING EAST AT 25 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  HARDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4617 9437 4616 9436 4616 9402 4607 9401
      4612 9438 4618 9437 4619 9436
TIME...MOT...LOC 2124Z 269DEG 22KT 4615 9428

HAIL...1.25IN
WIND...<50MPH

$$

JLT
2 follow-up statements
125 
WWUS53 KMPX 262132
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
432 PM CDT SAT JUL 26 2014

MNC097-262200-
/O.CON.KMPX.SV.W.0072.000000T0000Z-140726T2200Z/
MORRISON MN-
432 PM CDT SAT JUL 26 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
MORRISON COUNTY UNTIL 500 PM CDT...

AT 428 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHEAST
OF CAMP RIPLEY...AND MOVING EAST AT 25 MPH.

HAZARD...HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
HARDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4611 9427 4615 9429 4616 9402 4607 9401
TIME...MOT...LOC 2132Z 269DEG 22KT 4615 9421

HAIL...1.25IN
WIND...<50MPH

$$

JLT
683 
WWUS53 KMPX 262140
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
440 PM CDT SAT JUL 26 2014

MNC097-262150-
/O.CAN.KMPX.SV.W.0072.000000T0000Z-140726T2200Z/
MORRISON MN-
440 PM CDT SAT JUL 26 2014

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MORRISON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4611 9427 4615 9429 4616 9402 4607 9401
TIME...MOT...LOC 2140Z 278DEG 29KT 4613 9408

$$

JLT

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 3:04 PM CDTSpecial Weather StatementMPXTodd56 min
Jul 26, 3:26 PM CDTSpecial Weather StatementMPXLac qui Parle49 min
Jul 26, 3:32 PM CDTSpecial Weather StatementMPXTodd28 min
Jul 26, 3:46 PM CDTSpecial Weather StatementMPXMorrison29 min
Jul 26, 3:50 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd25 min
Jul 26, 4:21 PM CDTSpecial Weather StatementMPXMorrison39 min
Jul 26, 4:55 PM CDTSpecial Weather StatementMPXMille Lacs50 min
Jul 26, 5:16 PM CDTSevere Thunderstorm WarningMPXMille Lacs29 min
Jul 26, 5:44 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs31 min
Jul 26, 6:11 PM CDTSevere Thunderstorm WarningMPXKanabec34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014Every severe thunderstorm warning in 2014

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.