Alert archive / Florida / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 143, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at May 19, 2003, 5:18 PM EDT for Alachua County, Florida. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 19, 2003, 5:18 PM EDT (21:18 UTC)
- Expired
- May 19, 2003, 6:00 PM EDT
- In force
- 42 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
County Alachua County, FL
The radar
The Jacksonville radar (KJAX), 110 km from the middle of the area, began a volume at 21:20 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
Jacksonville, FL (KJAX), launched 12:00Z, 9.3 hours before the alert went out and 111 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.
- Mixed-layer CAPE
- 739 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
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.
NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 19, 2:45 PM EDT, 2 hours 33 minutes earlier.
Area forecast discussion, May 19, 2:45 PM EDT, 2 hours 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 245 PM EDT MON MAY 19 2003 CURRENT...OLD QUASI-STATIONARY FRONT EXTENDS FROM NR KSSI TO KAMG. LARGE OUTFLOW BOUNDARY APPEARS TO BE MOVING INTO THE SUWANNEE VALLEY AREA FROM THE W. IN ADDITION...SEABREEZES HAVE DEVELOPED ALONG BOTH THE ATLC AND GULF COASTS. TSTMS ARE ALREADY FIRING...MAINLY NR THE SAINT JOHNS RIVER S OF KJAX. ALOFT...WEAKENING UPPER LOW HAS SUNK S INTO THE N GOMEX (AS PROGGED) AS LONGWAVE RIDGE EXTENDS FROM THE SE U.S. INTO THE GREAT LAKES STATES. PUBLIC...SHOULD SEE SLIGHTLY COOLER WX OVER SE GA AND EXTREME NE FL AS BACKDOOR FRONT PUSHES INTO THE AREA. UPPER LOW WILL CONTINUE TO WEAKEN WITH THIN HIGH PRES RIDGE OVER THE AREA. MODELS CONTINUE TO DEVELOP SFC LOW OVER AL BY WED. LOOKING AT 500MB PATTERN...PREFER TO BLEND ETA AND GFS GUIDANCE WITH A LITTLE LEAN TOWARD THE ETA. THE ETA IS WEAKER AND SLOWER WITH THIS LOW. AS A RESULT...WILL BACK OFF ON 80% POPS ASSOCIATED WITH THIS LOW. ALSO ADJUSTED TIMING A BIT...ESP IN THE NEAR TERM. AS A RESULT OF BRIEF BUILDING OF UPPER RIDGE...WILL SEE A DECREASE IN POPS ON TUE. WILL DISCOUNT HI POPS ON WED FROM AVN OVER GA DUE TO THE SLOWER LOW TIMING. EXTENDED...HAVE TWEAKED POPS DOWN IN MUCH OF THE EXTENDED. ASSUMING FRONT EVENTUALLY PUSHING THRU THE AREA THU...POST-FRONTAL ENVIRONMENT SHOULD ONLY ALLOW ISOLATED ACTIVITY...ESP OVER GA. MARINE...NE SWELL WILL BE MAIN CONCERN IN THE NEAR TERM. WILL LIKELY HAVE MARGINAL SCA CRITERIA SEAS IN GA WATERS...WITH SCEC FOR FL. FIRE WX...NO HEADLINES. PRELIMINARY POINT TEMPS/POPS... AMG 66 81 67 83 / 40 30 20 60 SSI 70 78 68 80 / 30 30 20 40 JAX 70 82 68 84 / 40 30 20 40 SGJ 73 80 71 81 / 40 40 20 40 GNV 69 87 66 85 / 50 40 30 60 OCF 69 89 67 87 / 50 50 40 50 JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...SCA ALTAMAHA SOUND TO FERNANDINA BCH OUT 60 NM. CARROLL/HESS
Hazardous weather outlook, May 19, 12:40 PM EDT, 4 hours 38 minutes before
FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-200000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 1240 PM EDT MON MAY 19 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... ...STRONG STORMS POSSIBLE THIS AFTERNOON... ...MODERATE RISK OF RIP CURRENTS AT THE BEACHES... SEA BREEZE FRONTS WILL CONTINUE TO MOVE INLAND THROUGH THE AFTERNOON HOURS. THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON AND EVENING. THUNDERSTORMS WILL BECOME QUITE STRONG THIS AFTERNOON... ESPECIALLY JUST EAST OF THE I-75 CORRIDOR IN FLORIDA LATE THIS AFTERNOON AND THIS EVENING. THE BIGGEST CONCERN FROM THESE STORMS WILL BE FREQUENT LIGHTNING...WIND GUSTS OVER 40 MPH...AND SMALL HAIL. A FEW SEVERE STORMS WILL BE POSSIBLE...BUT ORGANIZED SEVERE WEATHER IS NOT ANTICIPATED. THERE WILL BE A MODERATE RISK OF RIP CURRENTS AT AREA BEACHES... PLEASE REFER TO THE SURF ZONE FORECAST FOR FURTHER DETAILS. OTHERWISE...NO HAZARDOUS WEATHER CONDITIONS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... A COLD FRONT IS EXPECTED TO MOVE INTO THE REGION THURSDAY AND FRIDAY INCREASING THE CHANCES OF THUNDERSTORMS BOTH DAYS. OTHERWISE...NO HAZARDOUS WEATHER CONDITIONS ARE EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WEATHER CONDITIONS DETERIORATE OR A WARNING IS ISSUED FOR YOUR AREA. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WWW.SRH.NOAA.GOV/JAX. CARROLL
In the hours before
Special weather statement, May 19, 4:37 PM EDT, 41 minutes before
FLZ022-192130- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 437 PM EDT MON MAY 19 2003 ...STRONG THUNDERSTORMS WILL IMPACT COLUMBIA COUNTY THROUGH 530 PM... STRONG THUNDERSTORMS WILL COLLIDE OVER COLUMBIA COUNTY PRODUCING VERY HEAVY RAIN WHICH MAY CAUSE FLOODING IN LOW AREAS. MOVEMENT IS TO THE NORTH AT 10 MPH. AREAS AFFECTED WILL INCLUDE THE LAKE CITY AREA. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. ZIBURA
Special weather statement, May 19, 4:47 PM EDT, 31 minutes before
FLZ036-192130- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 447 PM EDT MON MAY 19 2003 ...STRONG THUNDERSTORMS WILL IMPACT WESTERN MARION COUNTY THROUGH 530 PM... AT 447 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED 7 MILES EAST OF ARCHER...OR ABOUT 10 MILES NORTH OF WILLISTON...MOVING NORTHWEST AT 10 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND ARCHER AND NEWBERRY THROUGH 530 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND WIND GUSTS OF 45 TO 55 MPH CAN BE EXPECTED. POSTPONE OUTDOOR ACTIVITIES PROMPTLY. GO QUICKLY INSIDE A COMPLETELY ENCLOSED BUILDING. CARROLL
Special weather statement, May 19, 4:47 PM EDT, 31 minutes before
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</html>Special weather statement, May 19, 4:55 PM EDT, 23 minutes before
FLZ035-192130- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 455 PM EDT MON MAY 19 2003 ...STRONG THUNDERSTORMS WILL IMPACT GILCHRIST COUNTY THROUGH 530 PM... AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER GILCHRIST COUNTY ABOUT 8 MILES NORTHEAST OF TRENTON...DRIFTING NORTHEAST AT 5 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND THROUGH 530 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. DUE TO THE SLOW MOVEMENT OF THE STORM...1 TO 2 INCHES OF ADDITIONAL RAIN ARE LIKELY...CAUSING MINOR FLOODING OF LOW AREAS. CARROLL
Special weather statement, May 19, 4:55 PM EDT, 23 minutes before
FLZ035-192130- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 455 PM EDT MON MAY 19 2003 ...STRONG THUNDERSTORMS WILL IMPACT GILCHRIST COUNTY THROUGH 530 PM... AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER GILCHRIST COUNTY ABOUT 8 MILES NORTHEAST OF TRENTON...DRIFTING NORTHEAST AT 5 MPH. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. DUE TO THE SLOW MOVEMENT OF THE STORM...1 TO 2 INCHES OF ADDITIONAL RAIN ARE LIKELY...CAUSING MINOR FLOODING OF LOW AREAS. CARROLL
Special weather statement, May 19, 5:04 PM EDT, 14 minutes before
GAZ150-163-164-192145- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 504 PM EDT MON MAY 19 2003 ...STRONG THUNDERSTORMS WILL IMPACT CHARLTON...CLINCH AND WARE COUNTIES THROUGH 545 PM... AT 504 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER WARE COUNTY...OR ABOUT 8 MILES NORTHWEST OF STEVEN FOSTER STATE PARK...MOVING NORTHEAST AT 15 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND RACE POND AND OKEFENOKEE THROUGH 545 PM EDT. GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE. TRABERT
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 8:01 PM EDT | Special Marine Warning | JAX | 89 min | |
| May 18, 9:34 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 41 min |
| May 18, 10:19 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 56 min |
| May 18, 11:17 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 43 min |
| May 19, 2:44 PM EDT | Severe Thunderstorm Warning | JAX | Putnam | 46 min |
| May 19, 3:16 PM EDT | Severe Thunderstorm Warning | JAX | Hamilton | 44 min |
| May 19, 3:50 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 40 min |
| May 19, 4:17 PM EDT | Severe Thunderstorm Warning | JAX | Columbia | 43 min |
| May 19, 4:15 PM EDT | Severe Thunderstorm Warning | JAX | Echols | 45 min |
| May 19, 4:30 PM EDT | Severe Thunderstorm Warning | JAX | Clinch | 45 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning in 2003
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.