Alert archive / Indiana / Freeze Warnings in 2013

Freeze Warning 1, NWS Indianapolis, IN

April 19, 201339 counties in Indiana

NWS Indianapolis, IN issued this freeze warning at Apr 19, 2013, 2:42 PM EDT for 39 counties in Indiana. It took effect at Apr 20, 2013, 4:00 AM EDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 19, 2013, 2:42 PM EDT (18:42 UTC)
In effect from
Apr 20, 2013, 4:00 AM EDT
Expired
Apr 20, 2013, 8:00 AM EDT
In force
4 hr
Issued by
NWS Indianapolis, IN
All 39 counties

Bartholomew County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN

The radar

The Indianapolis radar (KIND), 15 km from the middle of the area, began a volume at 18:41 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.7 hours before the alert went out and 194 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, Lincoln, IL at 12:00Z on 2013-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2013-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -198 square meters per square second.1939587897117136Sfc1 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
4 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
101 kt
0-1 km storm-relative helicity
-198 m²/s²
0-3 km storm-relative helicity
-35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Indianapolis, IN wrote its last area forecast discussion before this freeze warning went out at Apr 19, 2:22 PM EDT, 20 minutes earlier.

Area forecast discussion, Apr 19, 2:22 PM EDT, 20 minutes before
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Hazardous weather outlook, Apr 19, 2:36 PM EDT, 6 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
236 PM EDT FRI APR 19 2013

INZ021-028>031-035>040-043>048-051>055-060>063-067>070-201000-
CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-
BOONE-TIPTON-HAMILTON-MADISON-VERMILLION-PARKE-PUTNAM-HENDRICKS-
MARION-HANCOCK-VIGO-CLAY-OWEN-MORGAN-JOHNSON-SULLIVAN-GREENE-
MONROE-BROWN-KNOX-DAVIESS-MARTIN-LAWRENCE-
236 PM EDT FRI APR 19 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

OUTLOOK: FLOODING INTO THE EVENING. FREEZING TEMPERATURES OVERNIGHT.

HAZARDS: FLOODED ROADS AND STREAMS. RIVER FLOODING. FREEZING
TEMPERATURES.

TIMING: FLOODING THROUGH THE EVENING. FREEZING TEMPERATURES AFTER
400 AM TONIGHT.

DISCUSSION: WIDESPREAD FLOODING IS IN PROGRESS. MANY ROADS ARE
FLOODED AND CLOSED AS CREEKS AND STREAMS HAVE RUN OUT OF THEIR
BANKS. GUSTY SOUTHWEST WINDS TO 30 MPH ARE EXPECTED THROUGH 6 PM
EDT...AND MUCH COOLER AIR WILL SPREAD INTO INDIANA.

OVERNIGHT TEMPERATURES WILL DROP TO...OR SLIGHTLY BELOW FREEZING
AFTER 400 AM TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

OUTLOOK: ANOTHER WEATHER SYSTEM MAY BRING MORE THUNDERSTORMS NEXT
TUESDAY AND TUESDAY NIGHT. IT IS TOO EARLY TO DETERMINE IF SEVERE
WEATHER WILL OCCUR. LIGHTNING IS A THREAT IN ALL THUNDERSTORMS.
RIVER FLOODING WILL BE ONGOING MUCH OF NEXT WEEK.

DISCUSSION: COLD HIGH PRESSURE MAY BRING FROST ON SUNDAY MORNING.
THIS WILL BE FOLLOWED BY A WARM UP IN ADVANCE OF THE NEXT WEATHER
SYSTEM BRINGING A RAIN THREAT BY MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY REPORT ANY ONGOING FLOODING.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL
LOWERCASE)

INZ041-042-049-056-057-064-065-071-072-201000-
DELAWARE-RANDOLPH-HENRY-SHELBY-RUSH-BARTHOLOMEW-DECATUR-JACKSON-
JENNINGS-
236 PM EDT FRI APR 19 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

OUTLOOK: FREEZING TEMPERATURES OVERNIGHT.

HAZARDS: FREEZING TEMPERATURES.

TIMING: AFTER 400 AM TONIGHT.

DISCUSSION: GUSTY SOUTHWEST WINDS TO 30 MPH ARE EXPECTED THROUGH 6 PM
EDT...AND MUCH COOLER AIR WILL SPREAD INTO INDIANA.

COLD AIR ARRIVING IN THE AREA MAY RESULT IN TEMPERATURES FALLING
TO OR SLIGHTLY BELOW FREEZING AFTER 400 AM TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

OUTLOOK: ANOTHER WEATHER SYSTEM MAY BRING MORE THUNDERSTORMS NEXT
TUESDAY AND TUESDAY NIGHT. IT IS TOO EARLY TO DETERMINE IF SEVERE
WEATHER WILL OCCUR. LIGHTNING IS A THREAT IN ALL THUNDERSTORMS.

DISCUSSION: COLD HIGH PRESSURE MAY BRING FROST ON SUNDAY MORNING.
THIS WILL BE FOLLOWED BY A WARM UP IN ADVANCE OF THE NEXT WEATHER
SYSTEM BRINGING A RAIN THREAT BY MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL
LOWERCASE)

KOCH

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 18, 8:01 PM EDTAreal Flood AdvisoryINDBoone, Clinton, Howard, Montgomery, Putnam4 hr
Apr 18, 8:37 PM EDTAreal Flood AdvisoryINDBoone, Hamilton, Hancock, Hendricks, Johnson, Marion and 2 more4 hr
Apr 18, 9:06 PM EDTAreal Flood WarningINDBoone, Carroll, Clinton, Fountain, Hendricks, Howard and 6 more36 hr
Apr 19, 12:23 AM EDTAreal Flood WarningINDBrown, Clay, Daviess, Greene, Hamilton, Hancock and 14 more33 hr
Apr 19, 3:25 AM EDTFreeze WatchINDBartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more11 hr
Apr 19, 4:49 AM EDTRiver Flood WarningINDHamilton, Marion52 hr
Apr 19, 4:49 AM EDTRiver Flood WarningINDCarroll, Tippecanoe, White29 hr
Apr 19, 6:57 AM EDTRiver Flood WarningINDMarion, Morgan50 hr

Nearby

Freeze Warnings in Indiana, 2013Every freeze warning in 2013

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; radar from the NEXRAD Level II archive.