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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Little Rock, AR (LZK), 00Z. Its levels are in the table below.
Observed Sounding at Little Rock, AR (LZK), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (53)
Little Rock, AR (LZK): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1007 mb173 m14.83.8345° 11 kt
1000 mb232 m14.22.2340° 26 kt
956 mb610 m10.60.9355° 27 kt
925 mb883 m8.00.0345° 30 kt
888 mb1219 m4.8-1.2345° 28 kt
855 mb1524 m1.9-2.2340° 28 kt
850 mb1572 m1.4-2.4345° 27 kt
823 mb1829 m-0.0-4.8345° 27 kt
806 mb1999 m1.6-9.4—
793 mb2134 m1.2-10.9015° 33 kt
781 mb2252 m0.8-12.2—
763 mb2438 m-0.1-15.0355° 35 kt
734 mb2743 m-1.5-19.6000° 33 kt
718 mb2923 m-2.3-22.3—
707 mb3048 m-2.8-23.4335° 27 kt
700 mb3124 m-3.1-24.1335° 27 kt
686 mb3283 m-3.7-29.7—
655 mb3646 m-6.5-32.5—
644 mb3778 m-7.7-34.7—
613 mb4163 m-4.3-41.3—
603 mb4293 m-4.5-41.5—
582 mb4572 m-4.0-42.8325° 44 kt
569 mb4749 m-4.1-43.1—
538 mb5182 m-5.5-42.1310° 52 kt
519 mb5470 m-6.5-41.5—
500 mb5760 m-7.5-42.5300° 46 kt
479 mb6096 m-9.7-42.8300° 48 kt
460 mb6401 m-11.7-43.0300° 53 kt
442 mb6706 m-13.5-44.5305° 53 kt
408 mb7315 m-18.2-47.6285° 71 kt
400 mb7460 m-19.3-48.3285° 72 kt
384 mb7763 m-21.5-49.5—
371 mb8017 m-21.1-48.1—
345 mb8534 m-25.1-46.6270° 95 kt
317 mb9144 m-29.8-44.8265° 94 kt
301 mb9527 m-32.7-43.7—
300 mb9550 m-32.9-43.9270° 97 kt
286 mb9886 m-35.1-46.1—
273 mb10209 m-38.3-48.3270° 101 kt
258 mb10597 m-41.7-51.7—
250 mb10810 m-43.7-53.7270° 95 kt
233 mb11278 m-47.1-58.8270° 91 kt
223 mb11582 m-47.8-61.0265° 78 kt
212 mb11887 m-49.1-62.8270° 72 kt
200 mb12280 m-50.1-65.1250° 70 kt
185 mb12802 m-54.1-69.1255° 72 kt
171 mb13287 m-57.1-71.1—
152 mb14021 m-60.5-74.5265° 73 kt
150 mb14110 m-60.9-74.9270° 75 kt
131 mb14935 m-64.1-77.3255° 66 kt
119 mb15545 m-66.0-78.4260° 64 kt
107 mb16154 m-67.2-79.2255° 54 kt
100 mb16580 m-67.1-79.1270° 52 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.