Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 27, NWS Des Moines, IA

May 13, 1995Floyd County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 13, 1995, 3:16 PM CDT for Floyd County, Iowa. It was in force for 44 min.

The area

The counties it named.

The facts

Issued: May 13, 1995, 3:16 PM CDT (20:16 UTC)
Expired: May 13, 1995, 4:00 PM CDT
In force: 44 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Floyd County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 8.3 hours before the alert went out and 209 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 631 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 161 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KALO 132018
SVRALO
IAC067-132100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WATERLOO IA
316 PM CDT SAT MAY 13 1995
 
THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL IOWA
 
   ...WESTERN FLOYD COUNTY
 
AT 3:17 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WATERLOO INDICATED A
SEVERE THUNDERSTORM 5 MILES WEST OF ROCKFORD OR 10 MILES SOUTHEAST OF
MASON CITY. THE STORM WAS MOVING NORTHEAST AT 30 MPH AND WILL AFFECT THE
COMMUNITIES OF ROCKFORD...NORA SPRINGS AND RUDD.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. MOVE TO THE CENTER OF THE HOUSE AND STAY AWAY
FROM WINDOWS. BE READY TO ACT QUICKLY IF A TORNADO DEVELOPS.
 
DERNER

What 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.

In the hours before

Special weather statement, May 13, 10:38 AM CDT, 4 hours 38 minutes before

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1035 AM CDT SAT MAY 13 1995

HAZARD...WIDELY SCATTERED SEVERE THUNDERSTORMS WITH LARGE HAIL...
DAMAGING WINDS AND ISOLATED TORNADOES.

AREA OF CONCERN...SOUTHEAST THIRD OF IOWA...MAINLY SOUTHEAST OF
A CHARITON...CEDAR RAPIDS...TO DUBUQUE LINE. THIS INCLUDES THE CITIES
OF CEDAR RAPIDS...OTTUMWA...FAIRFIELD AND BURLINGTON.

TIMING DETAILS...SEVERE THUNDERSTORMS SHOULD DEVELOP BETWEEN 1 PM AND
4 PM OVER SOUTHEAST IOWA. THUNDERSTORMS WILL DEVELOP OVER THE REST OF
EASTERN IOWA THIS AFTERNOON.

METEOROLOGICAL COMMENTS...AN INTENSE LOW PRESSURE AREA OVER NORTHERN
KANSAS WILL MOVE NORTHEAST INTO NORTHWEST IOWA BY THIS EVENING.  A
COLD FRONT WILL MOVE EAST...SOUTH OF THE LOW ACROSS IOWA TODAY REACHING
EASTERN IOWA BY THIS AFTERNOON.  A FAVORABLE WIND PROFILE SUGGESTS
THE POTENTIAL FOR SUPERCELL DEVELOPMENT AND ISOLATED TORNADOES OVER
SOUTHEAST IOWA. ISOLATED SEVERE THUNDERSTORMS ARE ALSO POSSIBLE THIS
AFTERNOON ACROSS CENTRAL INTO NORTHERN IOWA JUST AHEAD OF THE COLD
FRONT.

PRECAUTIONS...EMERGENCY MANAGERS AND OTHER INTERESTS IN SOUTHEAST IOWA
SHOULD KEEP ALERT TO CHANGING WEATHER THIS AFTERNOON.  SPOTTER
ACTIVATION MAY BE REQUIRED. THE NEXT STATEMENT WILL BE ISSUED LATE
THIS MORNING.

SMITH

Special weather statement, May 13, 12:58 PM CDT, 2 hours 18 minutes before

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1258 PM CDT SAT MAY 13 1995

HAZARD...THUNDERSTORMS ARE NOW FORMING INTO A LINE.  SOME STORMS MAY
CONTAIN LARGE HAIL...DAMAGING WINDS AND ISOLATED TORNADOES.

AREA OF CONCERN...WEST CENTRAL INTO NORTH CENTRAL IOWA FOR THE NEXT TWO
HOURS.  CITIES IN THEIS AREA INCLUDE FORT DODGE...CLARION...ALGONA...
BOONE...ATLANTIC AND GUTHRIE CENTER.

TIMING DETAILS...THUNDERSTORMS ARE BEGINING TO DEVELOP RAPIDLY OVER THE
AREA OF CONCERN.  FOR THE NEXT TWO HOUR PERSONS IN THIS AREA NEED TO
KEEP TUNED TO THE LATEST WEATHER INFORMATION IN CASE A WARNING IS
ISSUED.

METEOROLOGICAL COMMENTS...A COLD FRONT WAS BEGINNING TO PUSH INTO
WESTERN IOWA AT 1245 PM.  THUNDERSTORMS WILL CONTINUE TO BE A THREAT
ALONG THIS FRONT AS IT PUSHES INTO CENTRAL IOWA LATE THIS AFTERNOON.
THE WIND PROFILE REMAINS FAVORABLE FOR ISOLATED TORNADOES AND DAMAGING
WINDS.  AS THE SUN CONTINUES OVER CENTRAL AND EASTERN IOWA THE
ATMOSPHERE WILL BECOME INCREASINGLY UNSTABLE OVER THE EASTERN HALF
OF THE STATE.

PRECAUTIONS...EMERGENCY MANAGERS OVER THE AREA OF CONCERN SHOULD
CONSIDER SPOTTER ACTIVATION.  CENTRAL AND EASTERN IOWA EMERGENCY
MANAGERS SHOULD BE PREPARED FOR ACTIVATION LATER THIS AFTERNOON AND
EVENING.

 BELLES

Special weather statement, May 13, 2:19 PM CDT, 57 minutes before

IAZ017-131955-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
220 PM CDT SAT MAY 13 1995

...SEVERE THUNDERSTORM WARNING FOR WESTERN CERRO GORDO COUNTY UNTIL 240
PM CDT...

AT 218 PM CDT DOPPLER RADAR INDICATES THAT A SEVERE THUNDERSTORM WITH
GOLFBALL SIZED HAIL WILL MOVE TO NEAR CLEAR LAKE BY 225 PM CDT.
BOATERS SHOULD TAKE SHELTER IMMEDIATELY AS THIS STORM ALSO CONTAINS
DEADLY LIGHTNING AND STRONG WINDS.

 BELLES

Local storm report, May 13, 2:25 PM CDT, 51 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
224 PM CDT SAT MAY 13 1995

TIME(CDT)   .....CITY LOCATION.....  STATE  ...EVENT/REMARKS...
            ....COUNTY LOCATION....
155 PM     8 NE GOLDFIELD            IA     2 INCH DIAMETER HAIL
           NORTHERN WRIGHT CO

158 PM     7 N OF GOLDFIELD          IA     1 INCH DIAMETER HAIL
           NORTHERN WRIGHT CO

207 PM     NEAR KLEMME               IA     1 INCH DIAMETER HAIL
           SOUTHERN HANCOCK CO

212 PM     NEAR KLEMME               IA     GOLFBALL SIZED HAIL
           SOUTHERN HANCOCK CO

PYTLAK
&

Local storm report, May 13, 2:33 PM CDT, 43 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
231 PM CDT SAT MAY 13 1995

TIME(CDT)   .....CITY LOCATION.....  STATE  ...EVENT/REMARKS...
            ....COUNTY LOCATION....
226 PM     3 S OF VENTURA            IA     1 INCH DIAMETER HAIL
           WESTERN CERRO GORDO CO

PYTLAK
&

Local storm report, May 13, 3:01 PM CDT, 15 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT SAT MAY 13 1995

TIME(CDT)   .....CITY LOCATION.....  STATE  ...EVENT/REMARKS...
            ....COUNTY LOCATION....
240 PM     JUST S|W OF MASON CITY     IA     FUNNEL CLOUD
           CENTRAL CERRO GORDO CO

257 PM     ALEXANDER                 IA     1 INCH DIAMETER HAIL
           NORTHWEST FRANKLIN CO

PYTLAK
&

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 13, 4:27 AM CDT	Severe Thunderstorm Warning	DMX	Davis	33 min
May 13, 1:58 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Wright	32 min
May 13, 2:11 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	29 min
May 13, 2:25 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	30 min
May 13, 4:52 PM CDT	Severe Thunderstorm Warning	DMX	Franklin	33 min
May 13, 4:54 PM CDT	Severe Thunderstorm Warning	DMX	Franklin	36 min
May 13, 4:54 PM CDT	Severe Thunderstorm Warning	DMX	Wright	8 min
May 13, 5:23 PM CDT	Severe Thunderstorm Warning	DMX	Butler	17 min
May 13, 5:23 PM CDT	Severe Thunderstorm Warning	DMX	Floyd	32 min
May 13, 5:39 PM CDT	Severe Thunderstorm Warning	DMX	Chickasaw	31 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1995 Every severe thunderstorm warning in 1995

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.